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Mon, 31 Dec 2018 08:49:19 +0100 Message-ID: Subject: Re: INFO: rcu detected stall in ndisc_alloc_skb To: syzbot Cc: David Miller , Alexey Kuznetsov , LKML , netdev , syzkaller-bugs , Hideaki YOSHIFUJI , Linux-MM Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 31, 2018 at 8:42 AM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: ef4ab8447aa2 selftests: bpf: install script with_addr.sh > git tree: bpf-next > console output: https://syzkaller.appspot.com/x/log.txt?x=14a28b6e400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7e7e2279c0020d5f > dashboard link: https://syzkaller.appspot.com/bug?extid=ea7d9cb314b4ab49a18a > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+ea7d9cb314b4ab49a18a@syzkaller.appspotmail.com Since this involves OOMs and looks like a one-off induced memory corruption: #syz dup: kernel panic: corrupted stack end in wb_workfn > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > rcu: (detected by 0, t=10712 jiffies, g=90369, q=135) > > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > rcu: All QSes seen, last rcu_preempt kthread activity 10548 > (4295003843-4294993295), jiffies_till_next_fqs=1, root ->qsmask 0x0 > syz-executor0 R > running task > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 22896 7592 5826 0x8010000c > Call Trace: > > sched_show_task.cold.83+0x2b6/0x30a kernel/sched/core.c:5296 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > print_other_cpu_stall.cold.79+0xa83/0xba5 kernel/rcu/tree.c:1430 > check_cpu_stall kernel/rcu/tree.c:1557 [inline] > __rcu_pending kernel/rcu/tree.c:3276 [inline] > rcu_pending kernel/rcu/tree.c:3319 [inline] > rcu_check_callbacks+0xafc/0x1990 kernel/rcu/tree.c:2665 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > update_process_times+0x2d/0x70 kernel/time/timer.c:1636 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 > tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 > __run_hrtimer kernel/time/hrtimer.c:1398 [inline] > __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 > local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] > smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] > RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642 > Code: 3f 7e 0f 85 32 ff ff ff e8 a5 7f 3e ff e9 28 ff ff ff e8 0c e3 c2 ff > 48 83 3d 5c f4 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 > e9 bf fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801dae07450 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffffff8184e1ca > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801dae074c0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801dae06098 R11: ffffffff89409623 R12: ffff8801d9a04040 > R13: ffff8801d9a04040 R14: 0000000000000000 R15: 0000000000000286 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409 > Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f > 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 > e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00 > RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 > ORIG_RAX: ffffffffffffff13 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca > RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0 > R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000 > R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0 > vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 > vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 > ORIG_RAX: ffffffffffffff13 > vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > printk+0xa7/0xcf kernel/printk/printk.c:1996 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > dump_header+0x7cc/0xf72 mm/oom_kill.c:447 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 > out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 > __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] > __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235 > rcu: rcu_preempt kthread starved for 10548 jiffies! g90369 f0x2 > RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 > rcu: RCU grace-period kthread stack dump: > rcu_preempt R > running task 22736 10 2 0x80000000 > Call Trace: > context_switch kernel/sched/core.c:2825 [inline] > __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > schedule+0xfe/0x460 kernel/sched/core.c:3517 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > __do_cache_alloc mm/slab.c:3356 [inline] > slab_alloc mm/slab.c:3384 [inline] > kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618 > rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194 > kmalloc include/linux/slab.h:513 [inline] > syslog_print kernel/printk/printk.c:1297 [inline] > do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465 > kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40 > proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 > __vfs_read+0x117/0x9b0 fs/read_write.c:416 > vfs_read+0x17f/0x3c0 fs/read_write.c:452 > ksys_read+0x101/0x260 fs/read_write.c:578 > __do_sys_read fs/read_write.c:588 [inline] > __se_sys_read fs/read_write.c:586 [inline] > __x64_sys_read+0x73/0xb0 fs/read_write.c:586 > do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5bbee581fd > Code: Bad RIP value. > RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 > ORIG_RAX: 0000000000000000 > RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd > RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000 > R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420 > R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003 > warn_alloc_show_mem: 1 callbacks suppressed > Mem-Info: > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > Node 0 > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > 0 > 2819 > 6323 > 6323 > Node 0 > DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB > inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB > writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 3503 > 3503 > Node 0 > Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB > lowmem_reserve[]: > kthread+0x35a/0x420 kernel/kthread.c:246 > 0 > 0 > 0 > ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 > 0 > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > (U) > syz-executor0 cpuset= > 2*64kB > syz0 > (U) > mems_allowed=0 > 1*128kB > CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118 > (U) > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > 1*256kB (U) > Call Trace: > 0*512kB > > 1*1024kB > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > (U) > 1*2048kB > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > (M) > 3*4096kB > (M) > = 15908kB > Node 0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > DMA32: > 4*4kB > (UM) > 2*8kB (M) > 3*16kB > (M) > 3*32kB > (M) > 4*64kB > (UM) > 4*128kB > (UM) > 3*256kB > (M) > 4*512kB > (UM) > 3*1024kB > (UM) > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > 338*8kB > (UMEH) > 149*16kB > (UME) > 84*32kB > (UMEH) > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > 25*64kB (UM) > 2*128kB > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > (UH) > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > 0*256kB > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > 1*512kB > (H) > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > 0*1024kB > 0*2048kB 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > 175 total pagecache pages > 0 pages in swap cache > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > Swap cache stats: add 0, delete 0, find 0/0 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > Free swap = 0kB > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > Total swap = 0kB > 1965979 pages RAM > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > 0 pages HighMem/MovableOnly > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > rsyslogd cpuset= > / > mems_allowed=0 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > Mem-Info: > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Call Trace: > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > > Node 0 > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 0 > 2819 > 6323 > 6323 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > Node 0 > DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB > inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB > writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:248kB > free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 3503 > 3503 > Node 0 > Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:68kB free_cma:0kB > lowmem_reserve[]: 0 > 0 > 0 > 0 > Node 0 DMA: > 1*4kB > (U) > 0*8kB > 0*16kB > 1*32kB > (U) > 2*64kB > (U) > 1*128kB > (U) > 1*256kB > (U) > 0*512kB > 1*1024kB > (U) > 1*2048kB > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > (M) > 3*4096kB > (M) > = 15908kB > Node 0 > DMA32: > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > 4*4kB > (UM) > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > 2*8kB > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > (M) > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > 3*16kB > (M) > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > 3*32kB > (M) > 4*64kB > (UM) > 4*128kB > (UM) > 3*256kB > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > (M) > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > 4*512kB > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > (UM) > 3*1024kB > (UM) > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > 338*8kB > (UMEH) > 149*16kB > (UME) > 84*32kB > (UMEH) > 25*64kB > (UM) > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > 2*128kB > (UH) > 0*256kB > 1*512kB > (H) > 0*1024kB > 0*2048kB > 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > 175 total pagecache pages > 0 pages in swap cache > Swap cache stats: add 0, delete 0, find 0/0 > Free swap = 0kB > Total swap = 0kB > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > 1965979 pages RAM > 0 pages HighMem/MovableOnly > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > syz-executor0 cpuset= > syz0 > mems_allowed=0 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409 > Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f > 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 > e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00 > RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 > RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca > RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293 > RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0 > R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000 > R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0 > vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 > vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 > vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 > printk+0xa7/0xcf kernel/printk/printk.c:1996 > dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371 > dump_header+0x7cc/0xf72 mm/oom_kill.c:447 > oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 > out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 > __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] > __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > __do_cache_alloc mm/slab.c:3356 [inline] > slab_alloc mm/slab.c:3384 [inline] > kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618 > kmalloc include/linux/slab.h:513 [inline] > syslog_print kernel/printk/printk.c:1297 [inline] > do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465 > kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40 > proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 > __vfs_read+0x117/0x9b0 fs/read_write.c:416 > vfs_read+0x17f/0x3c0 fs/read_write.c:452 > ksys_read+0x101/0x260 fs/read_write.c:578 > __do_sys_read fs/read_write.c:588 [inline] > __se_sys_read fs/read_write.c:586 [inline] > __x64_sys_read+0x73/0xb0 fs/read_write.c:586 > do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5bbee581fd > Code: Bad RIP value. > RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 > RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd > RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000 > R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420 > R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003 > CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118 > Mem-Info: > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > Call Trace: > Node 0 > > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > lowmem_reserve[]: > 0 > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 2819 > 6323 6323 > Node 0 DMA32 free:25264kB min:30060kB low:37572kB high:45084kB > active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB > unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB > mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB > local_pcp:0kB free_cma:0kB > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > lowmem_reserve[]: > 0 > 0 3503 > 3503 > Node 0 > Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 0 > 0 > Node 0 DMA: > 1*4kB > (U) > 0*8kB > 0*16kB > 1*32kB > (U) > 2*64kB > (U) > 1*128kB > (U) > 1*256kB > (U) > 0*512kB > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > 1*1024kB > (U) > 1*2048kB > (M) > 3*4096kB > (M) > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > = 15908kB > Node 0 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > DMA32: > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > 4*4kB > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > (UM) > 2*8kB > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > (M) > 3*16kB > (M) > 3*32kB > (M) > 4*64kB > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > (UM) > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > 4*128kB > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > (UM) > 3*256kB > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > (M) > 4*512kB > (UM) > 3*1024kB > (UM) > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > 338*8kB > (UMEH) > 149*16kB > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > (UME) > 84*32kB > (UMEH) > 25*64kB > (UM) > 2*128kB > (UH) > 0*256kB > 1*512kB > (H) > 0*1024kB > 0*2048kB > 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > 175 total pagecache pages > 0 pages in swap cache > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > Swap cache stats: add 0, delete 0, find 0/0 > Free swap = 0kB > Total swap = 0kB > 1965979 pages RAM > 0 pages HighMem/MovableOnly > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > rsyslogd cpuset= > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > / > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > mems_allowed=0 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > syz-executor0 cpuset= > syz0 > mems_allowed=0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409 > Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f > 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 > e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00 > RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 > RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca > RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293 > RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0 > R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000 > R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0 > vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 > vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 > vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 > printk+0xa7/0xcf kernel/printk/printk.c:1996 > dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371 > dump_header+0x7cc/0xf72 mm/oom_kill.c:447 > oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 > out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 > __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] > __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > __do_cache_alloc mm/slab.c:3356 [inline] > slab_alloc mm/slab.c:3384 [inline] > kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618 > kmalloc include/linux/slab.h:513 [inline] > syslog_print kernel/printk/printk.c:1297 [inline] > do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465 > kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40 > proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 > __vfs_read+0x117/0x9b0 fs/read_write.c:416 > vfs_read+0x17f/0x3c0 fs/read_write.c:452 > ksys_read+0x101/0x260 fs/read_write.c:578 > __do_sys_read fs/read_write.c:588 [inline] > __se_sys_read fs/read_write.c:586 [inline] > __x64_sys_read+0x73/0xb0 fs/read_write.c:586 > do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5bbee581fd > Code: Bad RIP value. > RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 > RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd > RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000 > R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420 > R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003 > warn_alloc_show_mem: 1 callbacks suppressed > CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118 > Mem-Info: > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > Call Trace: > Node 0 > > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > lowmem_reserve[]: > 0 > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 2819 > 6323 > 6323 > Node 0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB > inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB > writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 3503 3503 > Node 0 Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB > lowmem_reserve[]: > 0 0 > 0 > 0 > Node 0 DMA: > 1*4kB > (U) > 0*8kB > 0*16kB > 1*32kB > (U) > 2*64kB > (U) 1*128kB > (U) > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > 1*256kB > (U) > 0*512kB > 1*1024kB > (U) > 1*2048kB > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > (M) > 3*4096kB > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > (M) = 15908kB > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > Node 0 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > DMA32: > 4*4kB > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > (UM) > 2*8kB > (M) > 3*16kB > (M) > 3*32kB > (M) > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > 4*64kB > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > (UM) > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > 4*128kB > (UM) > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > 3*256kB > (M) > 4*512kB > (UM) > 3*1024kB > (UM) > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > 338*8kB > (UMEH) > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > 149*16kB > (UME) > 84*32kB > (UMEH) > 25*64kB > (UM) > 2*128kB > (UH) > 0*256kB > 1*512kB > (H) > 0*1024kB > 0*2048kB > 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > 175 total pagecache pages > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > 0 pages in swap cache > Swap cache stats: add 0, delete 0, find 0/0 > Free swap = 0kB > Total swap = 0kB > 1965979 pages RAM > 0 pages HighMem/MovableOnly > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > rsyslogd cpuset= > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > / > mems_allowed=0 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > syz-executor0 cpuset= > syz0 mems_allowed=0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > > > --- > This bug is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with > syzbot. > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/0000000000007beca9057e4c8c14%40google.com. > For more options, visit https://groups.google.com/d/optout. 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[209.85.220.65]) by mx.google.com with SMTPS id x64sor26843296iof.102.2018.12.30.23.49.31 for (Google Transport Security); Sun, 30 Dec 2018 23:49:31 -0800 (PST) Received-SPF: pass (google.com: domain of dvyukov@google.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=O3u6MXsk; spf=pass (google.com: domain of dvyukov@google.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=dvyukov@google.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=7+1rO2pzNvpVthbHzCN/QiGu+kj3cKyFNbZg11HDJxY=; b=O3u6MXskpPESvqhAjriBD8UFLxwhKXQy3hmgh28NfHrobYic19VUOQFqJ3GWprSRIq sPctRougCBTsigKChFzBSIKwYtD/X2ckliC3DqQ/JiyN4re9Q9jFYq09VTd/wol6BPDM 6qi5QsKnyAIsOBMCYfrc36UeMVTh23pLIEuu7MWzOylnsEcVBjPSIrWZXMTBcmPoRoC4 ApCC6Hgm4p1XMgMx9uu60PC+5pY6SNfIQpDTaTRQEuOx0MuM4G3ilxEZLcaMwCcoWvpO 2wzKYPkFv0QHi78c+iTJ0tI9GWeaSjzdA/rA5V9didM3/g/kySevmyn2wEpN76+Q67H8 iZyA== X-Google-Smtp-Source: ALg8bN75EIziWExbJLc28dCdlp73juUtJ2iuCvheLgvqcjYwky8L7ThyBboxHVBAJIkaGk3IxUYGz3HGlvQ+Cj6kFmE= X-Received: by 2002:a5d:9456:: with SMTP id x22mr307457ior.282.1546242570914; Sun, 30 Dec 2018 23:49:30 -0800 (PST) MIME-Version: 1.0 References: <0000000000007beca9057e4c8c14@google.com> In-Reply-To: <0000000000007beca9057e4c8c14@google.com> From: Dmitry Vyukov Date: Mon, 31 Dec 2018 08:49:19 +0100 Message-ID: Subject: Re: INFO: rcu detected stall in ndisc_alloc_skb To: syzbot Cc: David Miller , Alexey Kuznetsov , LKML , netdev , syzkaller-bugs , Hideaki YOSHIFUJI , Linux-MM Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Message-ID: <20181231074919.ix-1IuYLcUXY-Os7aTW9wXCNcViGRxMkvCiHVaiKf1I@z> On Mon, Dec 31, 2018 at 8:42 AM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: ef4ab8447aa2 selftests: bpf: install script with_addr.sh > git tree: bpf-next > console output: https://syzkaller.appspot.com/x/log.txt?x=14a28b6e400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=7e7e2279c0020d5f > dashboard link: https://syzkaller.appspot.com/bug?extid=ea7d9cb314b4ab49a18a > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+ea7d9cb314b4ab49a18a@syzkaller.appspotmail.com Since this involves OOMs and looks like a one-off induced memory corruption: #syz dup: kernel panic: corrupted stack end in wb_workfn > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > rcu: (detected by 0, t=10712 jiffies, g=90369, q=135) > > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > rcu: All QSes seen, last rcu_preempt kthread activity 10548 > (4295003843-4294993295), jiffies_till_next_fqs=1, root ->qsmask 0x0 > syz-executor0 R > running task > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 22896 7592 5826 0x8010000c > Call Trace: > > sched_show_task.cold.83+0x2b6/0x30a kernel/sched/core.c:5296 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > print_other_cpu_stall.cold.79+0xa83/0xba5 kernel/rcu/tree.c:1430 > check_cpu_stall kernel/rcu/tree.c:1557 [inline] > __rcu_pending kernel/rcu/tree.c:3276 [inline] > rcu_pending kernel/rcu/tree.c:3319 [inline] > rcu_check_callbacks+0xafc/0x1990 kernel/rcu/tree.c:2665 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > update_process_times+0x2d/0x70 kernel/time/timer.c:1636 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164 > tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274 > __run_hrtimer kernel/time/hrtimer.c:1398 [inline] > __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518 > local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] > smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1054 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc_node mm/slab.c:3329 [inline] > RIP: 0010:kmem_cache_alloc_node+0x247/0x730 mm/slab.c:3642 > Code: 3f 7e 0f 85 32 ff ff ff e8 a5 7f 3e ff e9 28 ff ff ff e8 0c e3 c2 ff > 48 83 3d 5c f4 6f 07 00 0f 84 33 01 00 00 4c 89 ff 57 9d <0f> 1f 44 00 00 > e9 bf fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801dae07450 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffffff8184e1ca > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801dae074c0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801dae06098 R11: ffffffff89409623 R12: ffff8801d9a04040 > R13: ffff8801d9a04040 R14: 0000000000000000 R15: 0000000000000286 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409 > Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f > 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 > e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00 > RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 > ORIG_RAX: ffffffffffffff13 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca > RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0 > R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000 > R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0 > vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 > vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 > ORIG_RAX: ffffffffffffff13 > vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > printk+0xa7/0xcf kernel/printk/printk.c:1996 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > dump_header+0x7cc/0xf72 mm/oom_kill.c:447 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 > out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 > __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] > __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235 > rcu: rcu_preempt kthread starved for 10548 jiffies! g90369 f0x2 > RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 > rcu: RCU grace-period kthread stack dump: > rcu_preempt R > running task 22736 10 2 0x80000000 > Call Trace: > context_switch kernel/sched/core.c:2825 [inline] > __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > schedule+0xfe/0x460 kernel/sched/core.c:3517 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > schedule_timeout+0x140/0x260 kernel/time/timer.c:1804 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > __do_cache_alloc mm/slab.c:3356 [inline] > slab_alloc mm/slab.c:3384 [inline] > kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618 > rcu_gp_kthread+0x9d9/0x2310 kernel/rcu/tree.c:2194 > kmalloc include/linux/slab.h:513 [inline] > syslog_print kernel/printk/printk.c:1297 [inline] > do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465 > kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40 > proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 > __vfs_read+0x117/0x9b0 fs/read_write.c:416 > vfs_read+0x17f/0x3c0 fs/read_write.c:452 > ksys_read+0x101/0x260 fs/read_write.c:578 > __do_sys_read fs/read_write.c:588 [inline] > __se_sys_read fs/read_write.c:586 [inline] > __x64_sys_read+0x73/0xb0 fs/read_write.c:586 > do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5bbee581fd > Code: Bad RIP value. > RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 > ORIG_RAX: 0000000000000000 > RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd > RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000 > R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420 > R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003 > warn_alloc_show_mem: 1 callbacks suppressed > Mem-Info: > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > Node 0 > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > 0 > 2819 > 6323 > 6323 > Node 0 > DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB > inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB > writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 3503 > 3503 > Node 0 > Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB > lowmem_reserve[]: > kthread+0x35a/0x420 kernel/kthread.c:246 > 0 > 0 > 0 > ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 > 0 > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > (U) > syz-executor0 cpuset= > 2*64kB > syz0 > (U) > mems_allowed=0 > 1*128kB > CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118 > (U) > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > 1*256kB (U) > Call Trace: > 0*512kB > > 1*1024kB > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > (U) > 1*2048kB > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > (M) > 3*4096kB > (M) > = 15908kB > Node 0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > DMA32: > 4*4kB > (UM) > 2*8kB (M) > 3*16kB > (M) > 3*32kB > (M) > 4*64kB > (UM) > 4*128kB > (UM) > 3*256kB > (M) > 4*512kB > (UM) > 3*1024kB > (UM) > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > 338*8kB > (UMEH) > 149*16kB > (UME) > 84*32kB > (UMEH) > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > 25*64kB (UM) > 2*128kB > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > (UH) > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > 0*256kB > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > 1*512kB > (H) > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > 0*1024kB > 0*2048kB 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > 175 total pagecache pages > 0 pages in swap cache > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > Swap cache stats: add 0, delete 0, find 0/0 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > Free swap = 0kB > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > Total swap = 0kB > 1965979 pages RAM > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > 0 pages HighMem/MovableOnly > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > rsyslogd cpuset= > / > mems_allowed=0 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > Mem-Info: > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Call Trace: > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > > Node 0 > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 0 > 2819 > 6323 > 6323 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > Node 0 > DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB > inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB > writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:248kB > free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 3503 > 3503 > Node 0 > Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:68kB free_cma:0kB > lowmem_reserve[]: 0 > 0 > 0 > 0 > Node 0 DMA: > 1*4kB > (U) > 0*8kB > 0*16kB > 1*32kB > (U) > 2*64kB > (U) > 1*128kB > (U) > 1*256kB > (U) > 0*512kB > 1*1024kB > (U) > 1*2048kB > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > (M) > 3*4096kB > (M) > = 15908kB > Node 0 > DMA32: > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > 4*4kB > (UM) > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > 2*8kB > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > (M) > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > 3*16kB > (M) > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > 3*32kB > (M) > 4*64kB > (UM) > 4*128kB > (UM) > 3*256kB > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > (M) > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > 4*512kB > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > (UM) > 3*1024kB > (UM) > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > 338*8kB > (UMEH) > 149*16kB > (UME) > 84*32kB > (UMEH) > 25*64kB > (UM) > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > 2*128kB > (UH) > 0*256kB > 1*512kB > (H) > 0*1024kB > 0*2048kB > 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > 175 total pagecache pages > 0 pages in swap cache > Swap cache stats: add 0, delete 0, find 0/0 > Free swap = 0kB > Total swap = 0kB > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > 1965979 pages RAM > 0 pages HighMem/MovableOnly > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > syz-executor0 cpuset= > syz0 > mems_allowed=0 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409 > Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f > 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 > e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00 > RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 > RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca > RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293 > RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0 > R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000 > R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0 > vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 > vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 > vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 > printk+0xa7/0xcf kernel/printk/printk.c:1996 > dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371 > dump_header+0x7cc/0xf72 mm/oom_kill.c:447 > oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 > out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 > __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] > __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > __do_cache_alloc mm/slab.c:3356 [inline] > slab_alloc mm/slab.c:3384 [inline] > kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618 > kmalloc include/linux/slab.h:513 [inline] > syslog_print kernel/printk/printk.c:1297 [inline] > do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465 > kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40 > proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 > __vfs_read+0x117/0x9b0 fs/read_write.c:416 > vfs_read+0x17f/0x3c0 fs/read_write.c:452 > ksys_read+0x101/0x260 fs/read_write.c:578 > __do_sys_read fs/read_write.c:588 [inline] > __se_sys_read fs/read_write.c:586 [inline] > __x64_sys_read+0x73/0xb0 fs/read_write.c:586 > do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5bbee581fd > Code: Bad RIP value. > RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 > RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd > RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000 > R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420 > R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003 > CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118 > Mem-Info: > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > Call Trace: > Node 0 > > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > lowmem_reserve[]: > 0 > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 2819 > 6323 6323 > Node 0 DMA32 free:25264kB min:30060kB low:37572kB high:45084kB > active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:0kB > unevictable:0kB writepending:0kB present:3129332kB managed:2890736kB > mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB > local_pcp:0kB free_cma:0kB > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > lowmem_reserve[]: > 0 > 0 3503 > 3503 > Node 0 > Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 0 > 0 > Node 0 DMA: > 1*4kB > (U) > 0*8kB > 0*16kB > 1*32kB > (U) > 2*64kB > (U) > 1*128kB > (U) > 1*256kB > (U) > 0*512kB > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > 1*1024kB > (U) > 1*2048kB > (M) > 3*4096kB > (M) > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > = 15908kB > Node 0 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > DMA32: > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > 4*4kB > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > (UM) > 2*8kB > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > (M) > 3*16kB > (M) > 3*32kB > (M) > 4*64kB > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > (UM) > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > 4*128kB > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > (UM) > 3*256kB > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > (M) > 4*512kB > (UM) > 3*1024kB > (UM) > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > 338*8kB > (UMEH) > 149*16kB > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > (UME) > 84*32kB > (UMEH) > 25*64kB > (UM) > 2*128kB > (UH) > 0*256kB > 1*512kB > (H) > 0*1024kB > 0*2048kB > 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > 175 total pagecache pages > 0 pages in swap cache > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > Swap cache stats: add 0, delete 0, find 0/0 > Free swap = 0kB > Total swap = 0kB > 1965979 pages RAM > 0 pages HighMem/MovableOnly > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > rsyslogd cpuset= > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > / > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > mems_allowed=0 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > syz-executor0 cpuset= > syz0 > mems_allowed=0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:console_unlock+0xfdf/0x1160 kernel/printk/printk.c:2409 > Code: c1 e8 03 42 80 3c 20 00 0f 85 d1 00 00 00 48 83 3d cd 54 cd 07 00 0f > 84 bc 00 00 00 e8 ca 37 1a 00 48 8b bd b0 fe ff ff 57 9d <0f> 1f 44 00 00 > e9 cc f9 ff ff 48 8b bd c8 fe ff ff e8 3b d8 5d 00 > RSP: 0000:ffff8801bccde450 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 > RAX: ffff8801bd36a180 RBX: 0000000000000200 RCX: ffffffff8184e1ca > RDX: 0000000000000000 RSI: ffffffff81649dc6 RDI: 0000000000000293 > RBP: ffff8801bccde5b8 R08: ffff8801bd36a180 R09: fffffbfff12720c0 > R10: fffffbfff12720c0 R11: ffffffff89390603 R12: dffffc0000000000 > R13: ffffffff84885bf0 R14: dffffc0000000000 R15: ffffffff899428d0 > vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1922 > vprintk_default+0x28/0x30 kernel/printk/printk.c:1963 > vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 > printk+0xa7/0xcf kernel/printk/printk.c:1996 > dump_unreclaimable_slab.cold.22+0xd8/0xe5 mm/slab_common.c:1371 > dump_header+0x7cc/0xf72 mm/oom_kill.c:447 > oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953 > out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120 > __alloc_pages_may_oom mm/page_alloc.c:3522 [inline] > __alloc_pages_slowpath+0x2318/0x2d80 mm/page_alloc.c:4235 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > __do_cache_alloc mm/slab.c:3356 [inline] > slab_alloc mm/slab.c:3384 [inline] > kmem_cache_alloc_trace+0x214/0x750 mm/slab.c:3618 > kmalloc include/linux/slab.h:513 [inline] > syslog_print kernel/printk/printk.c:1297 [inline] > do_syslog+0xb9b/0x1690 kernel/printk/printk.c:1465 > kmsg_read+0x8f/0xc0 fs/proc/kmsg.c:40 > proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 > __vfs_read+0x117/0x9b0 fs/read_write.c:416 > vfs_read+0x17f/0x3c0 fs/read_write.c:452 > ksys_read+0x101/0x260 fs/read_write.c:578 > __do_sys_read fs/read_write.c:588 [inline] > __se_sys_read fs/read_write.c:586 [inline] > __x64_sys_read+0x73/0xb0 fs/read_write.c:586 > do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5bbee581fd > Code: Bad RIP value. > RSP: 002b:00007f5bbc3f7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 > RAX: ffffffffffffffda RBX: 0000000001bc9ce0 RCX: 00007f5bbee581fd > RDX: 0000000000000fff RSI: 00007f5bbdc2c5a0 RDI: 0000000000000004 > RBP: 0000000000000000 R08: 0000000001bb5260 R09: 0000000000000000 > R10: 6b205d3334383630 R11: 0000000000000293 R12: 000000000065e420 > R13: 00007f5bbc3f89c0 R14: 00007f5bbf49d040 R15: 0000000000000003 > warn_alloc_show_mem: 1 callbacks suppressed > CPU: 0 PID: 7592 Comm: syz-executor0 Not tainted 4.19.0-rc6+ #118 > Mem-Info: > active_anon:48193 inactive_anon:137 isolated_anon:0 > active_file:16 inactive_file:15 isolated_file:0 > unevictable:0 dirty:0 writeback:0 unstable:0 > slab_reclaimable:9165 slab_unreclaimable:1475206 > mapped:8194 shmem:144 pagetables:402 bounce:0 > free:13771 free_pcp:443 free_cma:0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Node 0 active_anon:192772kB inactive_anon:548kB active_file:64kB > inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > mapped:32776kB dirty:0kB writeback:0kB shmem:576kB shmem_thp: 0kB > shmem_pmdmapped: 0kB anon_thp: 178176kB writeback_tmp:0kB unstable:0kB > all_unreclaimable? yes > Call Trace: > Node 0 > > DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > writepending:0kB present:15992kB managed:15908kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB > free_cma:0kB > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > lowmem_reserve[]: > 0 > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > 2819 > 6323 > 6323 > Node 0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > DMA32 free:25264kB min:30060kB low:37572kB high:45084kB active_anon:0kB > inactive_anon:0kB active_file:4kB inactive_file:0kB unevictable:0kB > writepending:0kB present:3129332kB managed:2890736kB mlocked:0kB > kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:248kB local_pcp:0kB > free_cma:0kB > lowmem_reserve[]: > 0 > 0 > 3503 3503 > Node 0 Normal free:13912kB min:37352kB low:46688kB high:56024kB > active_anon:192772kB inactive_anon:548kB active_file:60kB > inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB > managed:3588044kB mlocked:0kB kernel_stack:5248kB pagetables:1608kB > bounce:0kB free_pcp:1524kB local_pcp:1456kB free_cma:0kB > lowmem_reserve[]: > 0 0 > 0 > 0 > Node 0 DMA: > 1*4kB > (U) > 0*8kB > 0*16kB > 1*32kB > (U) > 2*64kB > (U) 1*128kB > (U) > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > 1*256kB > (U) > 0*512kB > 1*1024kB > (U) > 1*2048kB > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > (M) > 3*4096kB > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > (M) = 15908kB > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > Node 0 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > DMA32: > 4*4kB > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > (UM) > 2*8kB > (M) > 3*16kB > (M) > 3*32kB > (M) > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > 4*64kB > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > (UM) > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > 4*128kB > (UM) > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > 3*256kB > (M) > 4*512kB > (UM) > 3*1024kB > (UM) > 3*2048kB > (M) > 3*4096kB > (M) > = 25264kB > Node 0 > Normal: > 942*4kB > (UME) > 338*8kB > (UMEH) > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > 149*16kB > (UME) > 84*32kB > (UMEH) > 25*64kB > (UM) > 2*128kB > (UH) > 0*256kB > 1*512kB > (H) > 0*1024kB > 0*2048kB > 0*4096kB > = 13912kB > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=1048576kB > run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 > Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 > hugepages_size=2048kB > 175 total pagecache pages > __do_softirq+0x30b/0xad8 kernel/softirq.c:292 > 0 pages in swap cache > Swap cache stats: add 0, delete 0, find 0/0 > Free swap = 0kB > Total swap = 0kB > 1965979 pages RAM > 0 pages HighMem/MovableOnly > 342307 pages reserved > 0 pages cma reserved > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > rsyslogd: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > invoke_softirq kernel/softirq.c:372 [inline] > irq_exit+0x17f/0x1c0 kernel/softirq.c:412 > rsyslogd cpuset= > exiting_irq arch/x86/include/asm/apic.h:536 [inline] > smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1056 > / > mems_allowed=0 > apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:864 > > RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 > [inline] > RIP: 0010:slab_alloc mm/slab.c:3385 [inline] > RIP: 0010:kmem_cache_alloc+0x297/0x730 mm/slab.c:3552 > Code: 7e 0f 85 cf fe ff ff e8 06 60 3e ff e9 c5 fe ff ff e8 6d c3 c2 ff 48 > 83 3d bd d4 6f 07 00 0f 84 3b 03 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 > e9 54 fe ff ff 31 d2 be a5 01 00 00 48 c7 c7 62 23 > RSP: 0000:ffff8801980a7748 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 > RAX: 0000000000000000 RBX: 0000000000480020 RCX: ffffc90001e5c000 > RDX: 0000000000000004 RSI: ffffffff8184e1e4 RDI: 0000000000000286 > RBP: ffff8801980a77b0 R08: ffff880193c38700 R09: fffffbfff12812c4 > R10: ffff8801980a6390 R11: ffffffff89409623 R12: 0000000000000000 > R13: ffff8801d9a04040 R14: ffff8801d9a04040 R15: 0000000000480020 > skb_clone+0x1bb/0x500 net/core/skbuff.c:1280 > ____bpf_clone_redirect net/core/filter.c:2079 [inline] > bpf_clone_redirect+0xb9/0x490 net/core/filter.c:2066 > bpf_prog_41f2bcae09cd4ac3+0x194/0x1000 > CPU: 1 PID: 5702 Comm: rsyslogd Not tainted 4.19.0-rc6+ #118 > ICMPv6: ndisc: ndisc_alloc_skb failed to allocate an skb > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > Call Trace: > > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 > warn_alloc.cold.119+0xb7/0x1bd mm/page_alloc.c:3426 > syz-executor0: page allocation failure: order:0, mode:0x484020(GFP_ATOMIC| > __GFP_COMP), nodemask=(null) > syz-executor0 cpuset= > syz0 mems_allowed=0 > __alloc_pages_slowpath+0x2667/0x2d80 mm/page_alloc.c:4297 > __alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4390 > __alloc_pages include/linux/gfp.h:473 [inline] > __alloc_pages_node include/linux/gfp.h:486 [inline] > kmem_getpages mm/slab.c:1409 [inline] > cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 > fallback_alloc+0x203/0x2e0 mm/slab.c:3219 > ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 > slab_alloc_node mm/slab.c:3327 [inline] > kmem_cache_alloc_node+0xe3/0x730 mm/slab.c:3642 > __alloc_skb+0x119/0x770 net/core/skbuff.c:193 > alloc_skb include/linux/skbuff.h:997 [inline] > ndisc_alloc_skb+0x144/0x340 net/ipv6/ndisc.c:403 > ndisc_send_rs+0x331/0x6e0 net/ipv6/ndisc.c:669 > addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3836 > call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 > expire_timers kernel/time/timer.c:1363 [inline] > __run_timers+0x7e5/0xc70 kernel/time/timer.c:1682 > > > --- > This bug is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with > syzbot. > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/0000000000007beca9057e4c8c14%40google.com. > For more options, visit https://groups.google.com/d/optout.