syzbot


general protection fault in io_sq_wq_submit_work

Status: auto-closed as invalid on 2020/12/18 14:56
Reported-by: syzbot+1e8b67ddaf7d0ae171e1@syzkaller.appspotmail.com
First crash: 1335d, last: 1335d

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 20657 Comm: kworker/u4:1 Not tainted 5.4.59-syzkaller-00507-ga2bf50800d51 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: io_ring-write-wq io_sq_wq_submit_work
RIP: 0010:__list_del_entry_valid+0x67/0x100 lib/list_debug.c:51
Code: 4c 89 f7 e8 3b d4 72 ff 48 ba 00 01 00 00 00 00 ad de 49 8b 1e 48 39 d3 74 53 48 83 c2 22 49 39 d7 74 5d 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 0a d4 72 ff 49 8b 17 4c 39 f2 75
RSP: 0018:ffff8881c765fb98 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dead000000000122 RSI: 0000000000000004 RDI: ffff8881d5d6cd00
RBP: ffff8881c765fd28 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed1038ecbf69 R11: 0000000000000004 R12: dffffc0000000000
R13: ffff8881d5d6ccf8 R14: ffff8881d5d6ccf8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020a5017f CR3: 00000001ced0a001 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:131 [inline]
 list_del_init include/linux/list.h:190 [inline]
 io_sq_wq_submit_work+0x7f5/0x14a0 fs/io_uring.c:2272
 process_one_work+0x777/0xf90 kernel/workqueue.c:2274
 worker_thread+0xa8f/0x1430 kernel/workqueue.c:2420
 kthread+0x2df/0x300 kernel/kthread.c:255
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 474bb0b2c911244a ]---
RIP: 0010:__list_del_entry_valid+0x67/0x100 lib/list_debug.c:51
Code: 4c 89 f7 e8 3b d4 72 ff 48 ba 00 01 00 00 00 00 ad de 49 8b 1e 48 39 d3 74 53 48 83 c2 22 49 39 d7 74 5d 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 0a d4 72 ff 49 8b 17 4c 39 f2 75
RSP: 0018:ffff8881c765fb98 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dead000000000122 RSI: 0000000000000004 RDI: ffff8881d5d6cd00
RBP: ffff8881c765fd28 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffed1038ecbf69 R11: 0000000000000004 R12: dffffc0000000000
R13: ffff8881d5d6ccf8 R14: ffff8881d5d6ccf8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020a5017f CR3: 00000001ced0a001 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/08/20 14:55 https://android.googlesource.com/kernel/common android-5.4 a2bf50800d51 ed282a3a .config console log report ci2-android-5-4-kasan
* Struck through repros no longer work on HEAD.