Messages in this thread | | | From | Dmitry Vyukov <> | Date | Fri, 16 Nov 2018 13:56:38 -0800 | Subject | Re: kernel BUG at mm/slab.c:LINE! (3) |
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On Tue, Nov 13, 2018 at 11:18 PM, syzbot <syzbot+2182db487a523d86bf34@syzkaller.appspotmail.com> wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 3e536cff3424 net: phy: check if advertising is zero using .. > git tree: net-next > console output: https://syzkaller.appspot.com/x/log.txt?x=16f95b83400000 > kernel config: https://syzkaller.appspot.com/x/.config?x=4a0a89f12ca9b0f5 > dashboard link: https://syzkaller.appspot.com/bug?extid=2182db487a523d86bf34 > compiler: gcc (GCC) 8.0.1 20180413 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=148d46d5400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c6a225400000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+2182db487a523d86bf34@syzkaller.appspotmail.com
All reproducers just do something simple with inet6 sockets and all crashes are on net-next, so +netdev
r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000080)={0xa, 0x4e24, 0x0, @ipv4={[], [], @loopback}}, 0x1c) sendmmsg(r0, &(0x7f00000092c0), 0x3ffffffffff0c00, 0x0)
> ------------[ cut here ]------------ > DEBUG_LOCKS_WARN_ON(depth >= MAX_LOCK_DEPTH) > ------------[ cut here ]------------ > kernel BUG at mm/slab.c:4425! > invalid opcode: 0000 [#1] PREEMPT SMP KASAN > CPU: 0 PID: -642842048 Comm: ksoftirqd/0 Not tainted 4.20.0-rc2+ #294 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:__check_heap_object+0xa7/0xb5 mm/slab.c:4450 > Code: 48 c7 c7 15 73 12 89 e8 97 e3 0a 00 5d c3 41 8b 91 04 01 00 00 48 29 > c7 48 39 d7 77 be 48 01 d0 48 29 c8 48 39 f0 72 b3 5d c3 <0f> 0b 48 c7 c7 15 > 73 12 89 e8 fd eb 0a 00 44 89 e9 48 c7 c7 d0 73 > RSP: 0018:ffff8881d9af0030 EFLAGS: 00010093 > RAX: 00000000000a57eb RBX: 1ffff1103b35e00d RCX: 000000000000000c > RDX: ffff8881d9af0240 RSI: 0000000000000002 RDI: ffff8881d9af01d8 > RBP: ffff8881d9af0030 R08: ffff8881d9af0240 R09: ffff8881da970180 > R10: 000000004afd69e7 R11: 0000000000000000 R12: ffff8881d9af01d8 > R13: 0000000000000002 R14: ffffea000766bc00 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000068 CR3: 00000001bb987000 CR4: 00000000001406f0 > Call Trace: > Modules linked in: > ---[ end trace 1c9eb38e9e38ee03 ]--- > RIP: 0010:__check_heap_object+0xa7/0xb5 mm/slab.c:4450 > Code: 48 c7 c7 15 73 12 89 e8 97 e3 0a 00 5d c3 41 8b 91 04 01 00 00 48 29 > c7 48 39 d7 77 be 48 01 d0 48 29 c8 48 39 f0 72 b3 5d c3 <0f> 0b 48 c7 c7 15 > 73 12 89 e8 fd eb 0a 00 44 89 e9 48 c7 c7 d0 73 > RSP: 0018:ffff8881d9af0030 EFLAGS: 00010093 > RAX: 00000000000a57eb RBX: 1ffff1103b35e00d RCX: 000000000000000c > RDX: ffff8881d9af0240 RSI: 0000000000000002 RDI: ffff8881d9af01d8 > RBP: ffff8881d9af0030 R08: ffff8881d9af0240 R09: ffff8881da970180 > R10: 000000004afd69e7 R11: 0000000000000000 R12: ffff8881d9af01d8 > R13: 0000000000000002 R14: ffffea000766bc00 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000068 CR3: 00000001bb987000 CR4: 00000000001406f0 > > > --- > 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. > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches > > -- > 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/0000000000005b7456057a9abc57%40google.com. > For more options, visit https://groups.google.com/d/optout.
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