From: syzbot <syzbot+193e29e9387ea5837f1d@syzkaller.appspotmail.com>
To: davem@davemloft.net, dhowells@redhat.com,
linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: BUG: corrupted list in rxrpc_local_processor
Date: Mon, 12 Aug 2019 03:20:06 -0700 [thread overview]
Message-ID: <0000000000002d1bcc058fe8deb8@google.com> (raw)
In-Reply-To: <000000000000492086058fad2979@google.com>
syzbot has found a reproducer for the following crash on:
HEAD commit: 125b7e09 net: tc35815: Explicitly check NET_IP_ALIGN is no..
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=16fb7bc2600000
kernel config: https://syzkaller.appspot.com/x/.config?x=a4c9e9f08e9e8960
dashboard link: https://syzkaller.appspot.com/bug?extid=193e29e9387ea5837f1d
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=159d4eba600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16ba194a600000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+193e29e9387ea5837f1d@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
list_del corruption. prev->next should be ffff8880996e84e0, but was
ffff8880996e8960
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:51!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.3.0-rc3+ #159
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: krxrpcd rxrpc_local_processor
RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f lib/list_debug.c:51
Code: e8 e9 03 1e fe 0f 0b 48 89 f1 48 c7 c7 80 25 c6 87 4c 89 e6 e8 d5 03
1e fe 0f 0b 4c 89 f6 48 c7 c7 20 27 c6 87 e8 c4 03 1e fe <0f> 0b 4c 89 ea
4c 89 f6 48 c7 c7 60 26 c6 87 e8 b0 03 1e fe 0f 0b
RSP: 0018:ffff8880a9917cc0 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffff8880996e84f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c3b96 RDI: ffffed1015322f8a
RBP: ffff8880a9917cd8 R08: 0000000000000054 R09: ffffed1015d260d1
R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff88808f998638
R13: ffff88808f998638 R14: ffff8880996e84e0 R15: ffff8880aa0a8500
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2648a08db8 CR3: 00000000981a9000 CR4: 00000000001406e0
Call Trace:
__list_del_entry include/linux/list.h:131 [inline]
list_del_init include/linux/list.h:190 [inline]
rxrpc_local_destroyer net/rxrpc/local_object.c:429 [inline]
rxrpc_local_processor+0x251/0x830 net/rxrpc/local_object.c:465
process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
worker_thread+0x98/0xe40 kernel/workqueue.c:2415
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 4d70382ddfcfe2b8 ]---
RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f lib/list_debug.c:51
Code: e8 e9 03 1e fe 0f 0b 48 89 f1 48 c7 c7 80 25 c6 87 4c 89 e6 e8 d5 03
1e fe 0f 0b 4c 89 f6 48 c7 c7 20 27 c6 87 e8 c4 03 1e fe <0f> 0b 4c 89 ea
4c 89 f6 48 c7 c7 60 26 c6 87 e8 b0 03 1e fe 0f 0b
RSP: 0018:ffff8880a9917cc0 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffff8880996e84f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c3b96 RDI: ffffed1015322f8a
RBP: ffff8880a9917cd8 R08: 0000000000000054 R09: ffffed1015d260d1
R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff88808f998638
R13: ffff88808f998638 R14: ffff8880996e84e0 R15: ffff8880aa0a8500
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2648a08db8 CR3: 00000000981a9000 CR4: 00000000001406e0
next prev parent reply other threads:[~2019-08-12 10:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 11:06 BUG: corrupted list in rxrpc_local_processor syzbot
2019-08-12 10:20 ` syzbot [this message]
2019-08-12 22:32 ` syzbot
2019-08-12 22:40 ` Jakub Kicinski
2019-08-12 22:41 ` David Howells
2019-08-13 0:51 ` syzbot
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