syzbot


BUG: scheduling while atomic in pipe_write

Status: auto-obsoleted due to no activity on 2024/07/05 08:18
Reported-by: syzbot+9f77a805eebe76d45a5e@syzkaller.appspotmail.com
First crash: 108d, last: 108d

Sample crash report:
BUG: scheduling while atomic: syz-executor.0/32061/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff81a64a69>] __mmap_lock_do_trace_acquire_returned+0x29/0x290 mm/mmap_lock.c:237
CPU: 0 PID: 32061 Comm: syz-executor.0 Tainted: G        W         5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 dump_stack+0x15/0x17 lib/dump_stack.c:113
 __schedule_bug+0x195/0x260 kernel/sched/core.c:5707
 schedule_debug kernel/sched/core.c:5734 [inline]
 __schedule+0xd19/0x1590 kernel/sched/core.c:6402
 schedule+0x11f/0x1e0 kernel/sched/core.c:6595
 pipe_write+0xcee/0x1930 fs/pipe.c:570
 call_write_iter include/linux/fs.h:2202 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xd5d/0x1110 fs/read_write.c:594
 ksys_write+0x199/0x2c0 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f83168b9e69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f831562d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f83169e7f80 RCX: 00007f83168b9e69
RDX: 00000000fffffdef RSI: 00000000200001c0 RDI: 0000000000000000
RBP: 00007f831690647a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f83169e7f80 R15: 00007ffd42312f38
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/06 08:12 android13-5.15-lts 993bed180178 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in pipe_write
* Struck through repros no longer work on HEAD.