* [syzbot] WARNING: kmalloc bug in hash_net_create @ 2021-09-03 23:50 syzbot 2021-09-03 23:55 ` Eric Dumazet 2021-09-04 2:06 ` syzbot 0 siblings, 2 replies; 4+ messages in thread From: syzbot @ 2021-09-03 23:50 UTC (permalink / raw) To: coreteam, davem, fw, kadlec, kuba, linux-kernel, netdev, netfilter-devel, pablo, syzkaller-bugs Hello, syzbot found the following issue on: HEAD commit: a9c9a6f741cd Merge tag 'scsi-misc' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=117f0915300000 kernel config: https://syzkaller.appspot.com/x/.config?x=1ac29107aeb2a552 dashboard link: https://syzkaller.appspot.com/bug?extid=2b8443c35458a617c904 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fba55d300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15bd2f49300000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2b8443c35458a617c904@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8432 at mm/util.c:597 kvmalloc_node+0x111/0x120 mm/util.c:597 Modules linked in: CPU: 0 PID: 8432 Comm: syz-executor044 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvmalloc_node+0x111/0x120 mm/util.c:597 Code: 01 00 00 00 4c 89 e7 e8 ed 11 0d 00 49 89 c5 e9 69 ff ff ff e8 90 55 d1 ff 41 89 ed 41 81 cd 00 20 01 00 eb 95 e8 7f 55 d1 ff <0f> 0b e9 4c ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 e8 66 RSP: 0018:ffffc900018f7288 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc900018f73a0 RCX: 0000000000000000 RDX: ffff88803d6ca300 RSI: ffffffff81a3f651 RDI: 0000000000000003 RBP: 0000000000400dc0 R08: 000000007fffffff R09: 000000000000001f R10: ffffffff81a3f60e R11: 000000000000001f R12: 0000000400000018 R13: 0000000000000000 R14: 00000000ffffffff R15: ffff88801743d000 FS: 0000000001d7c300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000046 CR3: 000000001e0d4000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hash_net_create+0x3dd/0x1220 net/netfilter/ipset/ip_set_hash_gen.h:1524 ip_set_create+0x782/0x15a0 net/netfilter/ipset/ip_set_core.c:1100 nfnetlink_rcv_msg+0xbc9/0x13f0 net/netfilter/nfnetlink.c:296 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 nfnetlink_rcv+0x1ac/0x420 net/netfilter/nfnetlink.c:654 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43f039 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc97697a28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f039 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 0000000000403020 R08: 0000000000000005 R09: 0000000000400488 R10: 0000000000000002 R11: 0000000000000246 R12: 00000000004030b0 R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] WARNING: kmalloc bug in hash_net_create 2021-09-03 23:50 [syzbot] WARNING: kmalloc bug in hash_net_create syzbot @ 2021-09-03 23:55 ` Eric Dumazet 2021-09-06 16:20 ` Jozsef Kadlecsik 2021-09-04 2:06 ` syzbot 1 sibling, 1 reply; 4+ messages in thread From: Eric Dumazet @ 2021-09-03 23:55 UTC (permalink / raw) To: syzbot, coreteam, davem, fw, kadlec, kuba, linux-kernel, netdev, netfilter-devel, pablo, syzkaller-bugs On 9/3/21 4:50 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: a9c9a6f741cd Merge tag 'scsi-misc' of git://git.kernel.org.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=117f0915300000 > kernel config: https://syzkaller.appspot.com/x/.config?x=1ac29107aeb2a552 > dashboard link: https://syzkaller.appspot.com/bug?extid=2b8443c35458a617c904 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fba55d300000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15bd2f49300000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+2b8443c35458a617c904@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 8432 at mm/util.c:597 kvmalloc_node+0x111/0x120 mm/util.c:597 > Modules linked in: > CPU: 0 PID: 8432 Comm: syz-executor044 Not tainted 5.14.0-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > RIP: 0010:kvmalloc_node+0x111/0x120 mm/util.c:597 > Code: 01 00 00 00 4c 89 e7 e8 ed 11 0d 00 49 89 c5 e9 69 ff ff ff e8 90 55 d1 ff 41 89 ed 41 81 cd 00 20 01 00 eb 95 e8 7f 55 d1 ff <0f> 0b e9 4c ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 e8 66 > RSP: 0018:ffffc900018f7288 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: ffffc900018f73a0 RCX: 0000000000000000 > RDX: ffff88803d6ca300 RSI: ffffffff81a3f651 RDI: 0000000000000003 > RBP: 0000000000400dc0 R08: 000000007fffffff R09: 000000000000001f > R10: ffffffff81a3f60e R11: 000000000000001f R12: 0000000400000018 > R13: 0000000000000000 R14: 00000000ffffffff R15: ffff88801743d000 > FS: 0000000001d7c300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000020000046 CR3: 000000001e0d4000 CR4: 00000000001506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > hash_net_create+0x3dd/0x1220 net/netfilter/ipset/ip_set_hash_gen.h:1524 > ip_set_create+0x782/0x15a0 net/netfilter/ipset/ip_set_core.c:1100 > nfnetlink_rcv_msg+0xbc9/0x13f0 net/netfilter/nfnetlink.c:296 > netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 > nfnetlink_rcv+0x1ac/0x420 net/netfilter/nfnetlink.c:654 > netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] > netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 > netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 > sock_sendmsg_nosec net/socket.c:704 [inline] > sock_sendmsg+0xcf/0x120 net/socket.c:724 > ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 > ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 > __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x43f039 > Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007ffc97697a28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f039 > RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 > RBP: 0000000000403020 R08: 0000000000000005 R09: 0000000000400488 > R10: 0000000000000002 R11: 0000000000000246 R12: 00000000004030b0 > R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 > > > --- > This report 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 issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches > As mentioned to Linus earlier, this bug comes after recent patch commit 7661809d493b426e979f39ab512e3adf41fbcc69 Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Wed Jul 14 09:45:49 2021 -0700 mm: don't allow oversized kvmalloc() calls 'kvmalloc()' is a convenience function for people who want to do a kmalloc() but fall back on vmalloc() if there aren't enough physically contiguous pages, or if the allocation is larger than what kmalloc() supports. However, let's make sure it doesn't get _too_ easy to do crazy things with it. In particular, don't allow big allocations that could be due to integer overflow or underflow. So make sure the allocation size fits in an 'int', to protect against trivial integer conversion issues. Acked-by: Willy Tarreau <w@1wt.eu> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] WARNING: kmalloc bug in hash_net_create 2021-09-03 23:55 ` Eric Dumazet @ 2021-09-06 16:20 ` Jozsef Kadlecsik 0 siblings, 0 replies; 4+ messages in thread From: Jozsef Kadlecsik @ 2021-09-06 16:20 UTC (permalink / raw) To: Eric Dumazet Cc: syzbot, coreteam, davem, fw, kuba, linux-kernel, netdev, netfilter-devel, pablo, syzkaller-bugs Hi Eric, On Fri, 3 Sep 2021, Eric Dumazet wrote: > On 9/3/21 4:50 PM, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: a9c9a6f741cd Merge tag 'scsi-misc' of git://git.kernel.org.. > > git tree: upstream > > console output: https://syzkaller.appspot.com/x/log.txt?x=117f0915300000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=1ac29107aeb2a552 > > dashboard link: https://syzkaller.appspot.com/bug?extid=2b8443c35458a617c904 > > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fba55d300000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15bd2f49300000 > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+2b8443c35458a617c904@syzkaller.appspotmail.com > > > > ------------[ cut here ]------------ > > WARNING: CPU: 0 PID: 8432 at mm/util.c:597 kvmalloc_node+0x111/0x120 mm/util.c:597 > > Modules linked in: > > CPU: 0 PID: 8432 Comm: syz-executor044 Not tainted 5.14.0-syzkaller #0 > > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > > RIP: 0010:kvmalloc_node+0x111/0x120 mm/util.c:597 > > Code: 01 00 00 00 4c 89 e7 e8 ed 11 0d 00 49 89 c5 e9 69 ff ff ff e8 90 55 d1 ff 41 89 ed 41 81 cd 00 20 01 00 eb 95 e8 7f 55 d1 ff <0f> 0b e9 4c ff ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 e8 66 > > RSP: 0018:ffffc900018f7288 EFLAGS: 00010293 > > RAX: 0000000000000000 RBX: ffffc900018f73a0 RCX: 0000000000000000 > > RDX: ffff88803d6ca300 RSI: ffffffff81a3f651 RDI: 0000000000000003 > > RBP: 0000000000400dc0 R08: 000000007fffffff R09: 000000000000001f > > R10: ffffffff81a3f60e R11: 000000000000001f R12: 0000000400000018 > > R13: 0000000000000000 R14: 00000000ffffffff R15: ffff88801743d000 > > FS: 0000000001d7c300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > CR2: 0000000020000046 CR3: 000000001e0d4000 CR4: 00000000001506f0 > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > Call Trace: > > hash_net_create+0x3dd/0x1220 net/netfilter/ipset/ip_set_hash_gen.h:1524 > > ip_set_create+0x782/0x15a0 net/netfilter/ipset/ip_set_core.c:1100 > > nfnetlink_rcv_msg+0xbc9/0x13f0 net/netfilter/nfnetlink.c:296 > > netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 > > nfnetlink_rcv+0x1ac/0x420 net/netfilter/nfnetlink.c:654 > > netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] > > netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 > > netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 > > sock_sendmsg_nosec net/socket.c:704 [inline] > > sock_sendmsg+0xcf/0x120 net/socket.c:724 > > ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 > > ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 > > __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 > > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > > do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > > entry_SYSCALL_64_after_hwframe+0x44/0xae > > RIP: 0033:0x43f039 > > Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 > > RSP: 002b:00007ffc97697a28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > > RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043f039 > > RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 > > RBP: 0000000000403020 R08: 0000000000000005 R09: 0000000000400488 > > R10: 0000000000000002 R11: 0000000000000246 R12: 00000000004030b0 > > R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 > > > > > > --- > > This report 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 issue. See: > > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > syzbot can test patches for this issue, for details see: > > https://goo.gl/tpsmEJ#testing-patches > > > > As mentioned to Linus earlier, this bug comes after recent patch Thanks indeed, that made simpler to fix it. Best regards, Jozsef > commit 7661809d493b426e979f39ab512e3adf41fbcc69 > Author: Linus Torvalds <torvalds@linux-foundation.org> > Date: Wed Jul 14 09:45:49 2021 -0700 > > mm: don't allow oversized kvmalloc() calls > > 'kvmalloc()' is a convenience function for people who want to do a > kmalloc() but fall back on vmalloc() if there aren't enough physically > contiguous pages, or if the allocation is larger than what kmalloc() > supports. > > However, let's make sure it doesn't get _too_ easy to do crazy things > with it. In particular, don't allow big allocations that could be due > to integer overflow or underflow. So make sure the allocation size fits > in an 'int', to protect against trivial integer conversion issues. > > Acked-by: Willy Tarreau <w@1wt.eu> > Cc: Kees Cook <keescook@chromium.org> > Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> > - E-mail : kadlec@blackhole.kfki.hu, kadlecsik.jozsef@wigner.hu PGP key : https://wigner.hu/~kadlec/pgp_public_key.txt Address : Wigner Research Centre for Physics H-1525 Budapest 114, POB. 49, Hungary ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] WARNING: kmalloc bug in hash_net_create 2021-09-03 23:50 [syzbot] WARNING: kmalloc bug in hash_net_create syzbot 2021-09-03 23:55 ` Eric Dumazet @ 2021-09-04 2:06 ` syzbot 1 sibling, 0 replies; 4+ messages in thread From: syzbot @ 2021-09-04 2:06 UTC (permalink / raw) To: axboe, chaitanya.kulkarni, coreteam, davem, eric.dumazet, fw, hch, ira.weiny, johan.hedberg, kadlec, kuba, linux-bluetooth, linux-kernel, luiz.dentz, marcel, martin.petersen, netdev, netfilter-devel, pablo, syzkaller-bugs syzbot has bisected this issue to: commit e6e7471706dc42cbe0e01278540c0730138d43e5 Author: Christoph Hellwig <hch@lst.de> Date: Tue Jul 27 05:56:34 2021 +0000 bvec: add a bvec_kmap_local helper bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12d7ad33300000 start commit: a9c9a6f741cd Merge tag 'scsi-misc' of git://git.kernel.org.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=11d7ad33300000 console output: https://syzkaller.appspot.com/x/log.txt?x=16d7ad33300000 kernel config: https://syzkaller.appspot.com/x/.config?x=1ac29107aeb2a552 dashboard link: https://syzkaller.appspot.com/bug?extid=2b8443c35458a617c904 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12fba55d300000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15bd2f49300000 Reported-by: syzbot+2b8443c35458a617c904@syzkaller.appspotmail.com Fixes: e6e7471706dc ("bvec: add a bvec_kmap_local helper") For information about bisection process see: https://goo.gl/tpsmEJ#bisection ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-09-06 16:21 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-09-03 23:50 [syzbot] WARNING: kmalloc bug in hash_net_create syzbot 2021-09-03 23:55 ` Eric Dumazet 2021-09-06 16:20 ` Jozsef Kadlecsik 2021-09-04 2:06 ` syzbot
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