* WARNING in dev_watchdog (2)
@ 2020-03-30 7:12 syzbot
2021-12-11 8:02 ` [syzbot] " syzbot
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2020-03-30 7:12 UTC (permalink / raw)
To: davem, jhs, jiri, linux-kernel, netdev, syzkaller-bugs, xiyou.wangcong
Hello,
syzbot found the following crash on:
HEAD commit: 76bb8b05 Merge tag 'kbuild-v5.5' of git://git.kernel.org/p..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12627e41e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=dd226651cb0f364b
dashboard link: https://syzkaller.appspot.com/bug?extid=d55372214aff0faa1f1f
compiler: gcc (GCC) 9.0.0 20181231 (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+d55372214aff0faa1f1f@syzkaller.appspotmail.com
hrtimer: interrupt took 23084 ns
------------[ cut here ]------------
NETDEV WATCHDOG: eth0 (e1000): transmit queue 0 timed out
WARNING: CPU: 0 PID: 8061 at net/sched/sch_generic.c:442 dev_watchdog+0xaf5/0xca0 net/sched/sch_generic.c:442
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8061 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
panic+0x2e3/0x75c kernel/panic.c:221
__warn.cold+0x2f/0x3e kernel/panic.c:582
report_bug+0x289/0x300 lib/bug.c:195
fixup_bug arch/x86/kernel/traps.c:174 [inline]
fixup_bug arch/x86/kernel/traps.c:169 [inline]
do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:dev_watchdog+0xaf5/0xca0 net/sched/sch_generic.c:442
Code: ff e8 8f 09 48 fb 4c 89 e7 c6 05 9b e3 26 04 01 e8 00 31 e8 ff 44 89 e9 4c 89 e6 48 c7 c7 00 34 d7 88 48 89 c2 e8 ea b3 18 fb <0f> 0b e9 06 fd ff ff 48 8b 7d d0 e8 db 79 85 fb e9 7d f8 ff ff 48
RSP: 0018:ffffc90000007c98 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff815e5a26 RDI: fffff52000000f85
RBP: ffffc90000007d00 R08: ffff888021394140 R09: ffffed1005a46621
R10: ffffed1005a46620 R11: ffff88802d233107 R12: ffff888027b6c000
R13: 0000000000000000 R14: ffff888027b6c4f8 R15: ffffffffffffe721
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:generic_exec_single+0x33a/0x4c0 kernel/smp.c:155
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 68 01 00 00 48 83 3d de 62 09 08 00 0f 84 e0 00 00 00 e8 bb 27 0b 00 48 89 df 57 9d <0f> 1f 44 00 00 45 31 ed e9 39 fe ff ff e8 a4 27 0b 00 0f 0b e9 23
RSP: 0018:ffffc90000ea7a80 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 0000000000000216 RCX: ffffc9000397a000
RDX: 000000000000129c RSI: ffffffff8169d2c5 RDI: 0000000000000216
RBP: ffffc90000ea7ab0 R08: 1ffffffff16161b8 R09: fffffbfff16161b9
R10: fffffbfff16161b8 R11: ffffffff8b0b0dc7 R12: 0000000000000200
R13: ffffc90000ea7b00 R14: ffffc90000ea7bd0 R15: ffffffff818beee0
smp_call_function_single+0x17c/0x480 kernel/smp.c:308
task_function_call+0xe9/0x180 kernel/events/core.c:114
perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746
__do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543
__se_sys_perf_event_open kernel/events/core.c:11151 [inline]
__x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa1443afc88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000072bf00 RCX: 000000000045a759
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa1443b06d4
R13: 00000000004af4bf R14: 00000000006f3b98 R15: 00000000ffffffff
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8061 at kernel/locking/mutex.c:1419 mutex_trylock+0x279/0x2f0 kernel/locking/mutex.c:1427
Modules linked in:
CPU: 0 PID: 8061 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:mutex_trylock+0x279/0x2f0 kernel/locking/mutex.c:1419
Code: c9 41 b8 01 00 00 00 31 c9 ba 01 00 00 00 31 f6 e8 ac 32 99 f9 58 48 8d 65 d8 b8 01 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b e9 0c fe ff ff 48 c7 c7 e0 e4 41 8b 48 89 4d d0 e8 e0 be f0
RSP: 0018:ffffc90000007858 EFLAGS: 00010006
RAX: 0000000000000103 RBX: 1ffff92000000f13 RCX: 0000000000000004
RDX: 0000000000000100 RSI: ffffffff816be955 RDI: ffffffff897c27a0
RBP: ffffc90000007888 R08: 0000000000000001 R09: fffffbfff12f3855
R10: fffffbfff12f3854 R11: ffffffff8979c2a3 R12: ffffffff8b41e4e0
R13: 0000000000000000 R14: ffffffff862cf100 R15: ffffffff897c27a0
FS: 00007fa1443b0700(0000) GS:ffff88802d200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001280 CR3: 0000000029896000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__crash_kexec+0x91/0x200 kernel/kexec_core.c:948
panic+0x308/0x75c kernel/panic.c:241
__warn.cold+0x2f/0x3e kernel/panic.c:582
report_bug+0x289/0x300 lib/bug.c:195
fixup_bug arch/x86/kernel/traps.c:174 [inline]
fixup_bug arch/x86/kernel/traps.c:169 [inline]
do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:dev_watchdog+0xaf5/0xca0 net/sched/sch_generic.c:442
Code: ff e8 8f 09 48 fb 4c 89 e7 c6 05 9b e3 26 04 01 e8 00 31 e8 ff 44 89 e9 4c 89 e6 48 c7 c7 00 34 d7 88 48 89 c2 e8 ea b3 18 fb <0f> 0b e9 06 fd ff ff 48 8b 7d d0 e8 db 79 85 fb e9 7d f8 ff ff 48
RSP: 0018:ffffc90000007c98 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff815e5a26 RDI: fffff52000000f85
RBP: ffffc90000007d00 R08: ffff888021394140 R09: ffffed1005a46621
R10: ffffed1005a46620 R11: ffff88802d233107 R12: ffff888027b6c000
R13: 0000000000000000 R14: ffff888027b6c4f8 R15: ffffffffffffe721
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:generic_exec_single+0x33a/0x4c0 kernel/smp.c:155
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 68 01 00 00 48 83 3d de 62 09 08 00 0f 84 e0 00 00 00 e8 bb 27 0b 00 48 89 df 57 9d <0f> 1f 44 00 00 45 31 ed e9 39 fe ff ff e8 a4 27 0b 00 0f 0b e9 23
RSP: 0018:ffffc90000ea7a80 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 0000000000000216 RCX: ffffc9000397a000
RDX: 000000000000129c RSI: ffffffff8169d2c5 RDI: 0000000000000216
RBP: ffffc90000ea7ab0 R08: 1ffffffff16161b8 R09: fffffbfff16161b9
R10: fffffbfff16161b8 R11: ffffffff8b0b0dc7 R12: 0000000000000200
R13: ffffc90000ea7b00 R14: ffffc90000ea7bd0 R15: ffffffff818beee0
smp_call_function_single+0x17c/0x480 kernel/smp.c:308
task_function_call+0xe9/0x180 kernel/events/core.c:114
perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746
__do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543
__se_sys_perf_event_open kernel/events/core.c:11151 [inline]
__x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa1443afc88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000072bf00 RCX: 000000000045a759
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa1443b06d4
R13: 00000000004af4bf R14: 00000000006f3b98 R15: 00000000ffffffff
irq event stamp: 2722971
hardirqs last enabled at (2722970): [<ffffffff81006743>] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41
hardirqs last disabled at (2722971): [<ffffffff8100675f>] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42
softirqs last enabled at (362): [<ffffffff8731cb72>] sctp_init_sock+0xed2/0x1450 net/sctp/socket.c:5169
softirqs last disabled at (605): [<ffffffff81475c8b>] invoke_softirq kernel/softirq.c:373 [inline]
softirqs last disabled at (605): [<ffffffff81475c8b>] irq_exit+0x19b/0x1e0 kernel/softirq.c:413
---[ end trace 1a7cb5e7e43d5cf6 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8061 at kernel/locking/mutex.c:737 mutex_unlock+0x1d/0x30 kernel/locking/mutex.c:744
Modules linked in:
CPU: 0 PID: 8061 Comm: syz-executor.0 Tainted: G W 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:mutex_unlock+0x1d/0x30 kernel/locking/mutex.c:737
Code: 4c 89 ff e8 35 ca f0 f9 e9 8c fb ff ff 55 65 8b 05 b0 7d 40 78 a9 00 ff 1f 00 48 89 e5 75 0b 48 8b 75 08 e8 45 f9 ff ff 5d c3 <0f> 0b 48 8b 75 08 e8 38 f9 ff ff 5d c3 66 0f 1f 44 00 00 48 b8 00
RSP: 0018:ffffc90000007888 EFLAGS: 00010006
RAX: 0000000000000103 RBX: 1ffff92000000f13 RCX: ffffffff816be96d
RDX: 0000000000000100 RSI: ffffffff816be9cf RDI: ffffffff897c27a0
RBP: ffffc90000007888 R08: ffff888021394140 R09: fffffbfff16161ba
R10: ffff888021394a78 R11: ffff888021394140 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffff862cf100 R15: 00000000000001ba
FS: 00007fa1443b0700(0000) GS:ffff88802d200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001280 CR3: 0000000029896000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
__crash_kexec+0x10b/0x200 kernel/kexec_core.c:957
panic+0x308/0x75c kernel/panic.c:241
__warn.cold+0x2f/0x3e kernel/panic.c:582
report_bug+0x289/0x300 lib/bug.c:195
fixup_bug arch/x86/kernel/traps.c:174 [inline]
fixup_bug arch/x86/kernel/traps.c:169 [inline]
do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:dev_watchdog+0xaf5/0xca0 net/sched/sch_generic.c:442
Code: ff e8 8f 09 48 fb 4c 89 e7 c6 05 9b e3 26 04 01 e8 00 31 e8 ff 44 89 e9 4c 89 e6 48 c7 c7 00 34 d7 88 48 89 c2 e8 ea b3 18 fb <0f> 0b e9 06 fd ff ff 48 8b 7d d0 e8 db 79 85 fb e9 7d f8 ff ff 48
RSP: 0018:ffffc90000007c98 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff815e5a26 RDI: fffff52000000f85
RBP: ffffc90000007d00 R08: ffff888021394140 R09: ffffed1005a46621
R10: ffffed1005a46620 R11: ffff88802d233107 R12: ffff888027b6c000
R13: 0000000000000000 R14: ffff888027b6c4f8 R15: ffffffffffffe721
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:generic_exec_single+0x33a/0x4c0 kernel/smp.c:155
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 68 01 00 00 48 83 3d de 62 09 08 00 0f 84 e0 00 00 00 e8 bb 27 0b 00 48 89 df 57 9d <0f> 1f 44 00 00 45 31 ed e9 39 fe ff ff e8 a4 27 0b 00 0f 0b e9 23
RSP: 0018:ffffc90000ea7a80 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 0000000000000216 RCX: ffffc9000397a000
RDX: 000000000000129c RSI: ffffffff8169d2c5 RDI: 0000000000000216
RBP: ffffc90000ea7ab0 R08: 1ffffffff16161b8 R09: fffffbfff16161b9
R10: fffffbfff16161b8 R11: ffffffff8b0b0dc7 R12: 0000000000000200
R13: ffffc90000ea7b00 R14: ffffc90000ea7bd0 R15: ffffffff818beee0
smp_call_function_single+0x17c/0x480 kernel/smp.c:308
task_function_call+0xe9/0x180 kernel/events/core.c:114
perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746
__do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543
__se_sys_perf_event_open kernel/events/core.c:11151 [inline]
__x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa1443afc88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000072bf00 RCX: 000000000045a759
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa1443b06d4
R13: 00000000004af4bf R14: 00000000006f3b98 R15: 00000000ffffffff
irq event stamp: 2722971
hardirqs last enabled at (2722970): [<ffffffff81006743>] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41
hardirqs last disabled at (2722971): [<ffffffff8100675f>] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42
softirqs last enabled at (362): [<ffffffff8731cb72>] sctp_init_sock+0xed2/0x1450 net/sctp/socket.c:5169
softirqs last disabled at (605): [<ffffffff81475c8b>] invoke_softirq kernel/softirq.c:373 [inline]
softirqs last disabled at (605): [<ffffffff81475c8b>] irq_exit+0x19b/0x1e0 kernel/softirq.c:413
---[ end trace 1a7cb5e7e43d5cf7 ]---
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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#status for how to communicate with syzbot.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [syzbot] WARNING in dev_watchdog (2)
2020-03-30 7:12 WARNING in dev_watchdog (2) syzbot
@ 2021-12-11 8:02 ` syzbot
0 siblings, 0 replies; 2+ messages in thread
From: syzbot @ 2021-12-11 8:02 UTC (permalink / raw)
To: davem, jhs, jiri, kuba, linux-kernel, netdev, syzkaller-bugs,
xiyou.wangcong
syzbot has found a reproducer for the following issue on:
HEAD commit: b8a98b6bf66a Merge tag 'pci-v5.16-fixes-2' of git://git.ke..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12fa7fc5b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=7d5e878e3399b6cc
dashboard link: https://syzkaller.appspot.com/bug?extid=d55372214aff0faa1f1f
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1068a551b00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1146706db00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d55372214aff0faa1f1f@syzkaller.appspotmail.com
------------[ cut here ]------------
NETDEV WATCHDOG: sl14 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 20260 at net/sched/sch_generic.c:478 dev_watchdog+0x81d/0x860 net/sched/sch_generic.c:477
Modules linked in:
CPU: 1 PID: 20260 Comm: dhcpcd-run-hook Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dev_watchdog+0x81d/0x860 net/sched/sch_generic.c:477
Code: 99 51 44 f9 c6 05 0d 02 ab 05 01 4c 89 e7 e8 ba fd e2 ff 48 c7 c7 e0 fb 9c 8b 4c 89 e6 48 89 c2 44 89 e9 31 c0 e8 33 2b 0e f9 <0f> 0b e9 2b fe ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 3c fc
RSP: 0018:ffffc90000dc0b40 EFLAGS: 00010246
RAX: 994dcd9ba1567700 RBX: 00000000ffffddd0 RCX: ffff8880a7b69d00
RDX: 0000000000000102 RSI: 0000000000000102 RDI: 0000000000000000
RBP: 00000000ffffde41 R08: ffffffff816a1d52 R09: fffff520001b80b9
R10: fffff520001b80b9 R11: 0000000000000000 R12: ffff88807dc5e000
R13: 0000000000000000 R14: ffff88807a490068 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562f1294c000 CR3: 0000000179f36000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:get_flush_tlb_info arch/x86/mm/tlb.c:966 [inline]
RIP: 0010:flush_tlb_mm_range+0x1a2/0x490 arch/x86/mm/tlb.c:1004
Code: e8 03 80 3c 18 00 74 05 e8 6b 78 94 00 4d 89 7d 10 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8 52 78 94 00 48 8b 04 24 <49> 89 45 00 49 8d 7d 24 48 89 f8 48 c1 e8 03 8a 04 18 84 c0 0f 85
RSP: 0018:ffffc90020abf660 EFLAGS: 00000246
RAX: ffff888152e71500 RBX: dffffc0000000000 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8880b9b38d90
RBP: ffffc90020abf720 R08: dffffc0000000000 R09: ffffed102a5ce325
R10: ffffed102a5ce325 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b9b38d80 R14: 0000000000000009 R15: ffffffffffffffff
tlb_flush arch/x86/include/asm/tlb.h:23 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:426 [inline]
tlb_flush_mmu+0x1a7/0x910 mm/mmu_gather.c:248
tlb_finish_mmu+0xcb/0x200 mm/mmu_gather.c:340
exit_mmap+0x3dd/0x6f0 mm/mmap.c:3172
__mmput+0x111/0x3a0 kernel/fork.c:1113
exec_mmap+0x589/0x610 fs/exec.c:1028
begin_new_exec+0x6c9/0x1180 fs/exec.c:1286
load_elf_binary+0x851/0x3c60 fs/binfmt_elf.c:1001
search_binary_handler fs/exec.c:1723 [inline]
exec_binprm fs/exec.c:1764 [inline]
bprm_execve+0x8eb/0x1470 fs/exec.c:1833
do_execveat_common+0x44c/0x590 fs/exec.c:1922
do_execve fs/exec.c:1990 [inline]
__do_sys_execve fs/exec.c:2066 [inline]
__se_sys_execve fs/exec.c:2061 [inline]
__x64_sys_execve+0x8e/0xa0 fs/exec.c:2061
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb90670f337
Code: Unable to access opcode bytes at RIP 0x7fb90670f30d.
RSP: 002b:00007ffd8df132e8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 0000562f1294bf28 RCX: 00007fb90670f337
RDX: 0000562f1294bf78 RSI: 0000562f1294bf28 RDI: 0000562f1294c000
RBP: 0000562f1294c000 R08: 0000562f1294c009 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000562f1294bf78
R13: 00007fb9068b4ff4 R14: 0000562f1294bf78 R15: 0000000000000000
</TASK>
----------------
Code disassembly (best guess):
0: e8 03 80 3c 18 callq 0x183c8008
5: 00 74 05 e8 add %dh,-0x18(%rbp,%rax,1)
9: 6b 78 94 00 imul $0x0,-0x6c(%rax),%edi
d: 4d 89 7d 10 mov %r15,0x10(%r13)
11: 4c 89 e8 mov %r13,%rax
14: 48 c1 e8 03 shr $0x3,%rax
18: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
1c: 74 08 je 0x26
1e: 4c 89 ef mov %r13,%rdi
21: e8 52 78 94 00 callq 0x947878
26: 48 8b 04 24 mov (%rsp),%rax
* 2a: 49 89 45 00 mov %rax,0x0(%r13) <-- trapping instruction
2e: 49 8d 7d 24 lea 0x24(%r13),%rdi
32: 48 89 f8 mov %rdi,%rax
35: 48 c1 e8 03 shr $0x3,%rax
39: 8a 04 18 mov (%rax,%rbx,1),%al
3c: 84 c0 test %al,%al
3e: 0f .byte 0xf
3f: 85 .byte 0x85
^ permalink raw reply [flat|nested] 2+ messages in thread
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