syzbot


kernel panic: stack is corrupted in do_epoll_wait

Status: auto-obsoleted due to no activity on 2023/10/01 19:33
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+80d2fea6b0a323f3e7cd@syzkaller.appspotmail.com
First crash: 160d, last: 160d

Sample crash report:
Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: do_epoll_wait+0x16e9/0x1910 fs/eventpoll.c:2331
CPU: 3 PID: 7689 Comm: udevd Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 panic+0x686/0x730 kernel/panic.c:340
 __stack_chk_fail+0x19/0x20 kernel/panic.c:758
 do_epoll_wait+0x16e9/0x1910 fs/eventpoll.c:2331
 __do_sys_epoll_wait fs/eventpoll.c:2338 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2333 [inline]
 __x64_sys_epoll_wait+0x15c/0x280 fs/eventpoll.c:2333
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcde3123457
Code: 73 01 c3 48 8b 0d d1 d9 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 e8 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 76 48 8b 15 a2 d9 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffcb1105b38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcde3123457
RDX: 0000000000000004 RSI: 00007ffcb1105b78 RDI: 0000000000000004
RBP: 00005615ba250e10 R08: 0000000000000007 R09: 62d3fbbfb7e1ca23
R10: 00000000ffffffff R11: 0000000000000246 R12: 00005615ba29f220
R13: 00007ffcb1105b78 R14: 0000000000000008 R15: 00005615ba2322c0
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/07/03 19:33 upstream a901a3568fd2 49fef1e5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel panic: stack is corrupted in do_epoll_wait
* Struck through repros no longer work on HEAD.