syzbot


BUG: scheduling while atomic in start_this_handle

Status: auto-obsoleted due to no activity on 2024/07/14 22:58
Reported-by: syzbot+7ad05742a30442def28d@syzkaller.appspotmail.com
First crash: 129d, last: 90d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 BUG: scheduling while atomic in start_this_handle 1 71d 71d 0/2 premoderation: reported on 2024/05/05 00:01

Sample crash report:
BUG: scheduling while atomic: syz-executor.2/4508/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8165eb4a>] is_module_text_address+0x1a/0x140 kernel/module.c:4811
CPU: 1 PID: 4508 Comm: syz-executor.2 Tainted: G        W         5.15.148-syzkaller-00013-gad06eaf051cd #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
 start_this_handle+0x52b/0x1fb0 fs/jbd2/transaction.c:400
 jbd2__journal_start+0x2ea/0x710 fs/jbd2/transaction.c:521
 __ext4_journal_start_sb+0xfa/0x2c0 fs/ext4/ext4_jbd2.c:105
 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
 ext4_evict_inode+0x9bb/0x14e0 fs/ext4/inode.c:255
 evict+0x2a3/0x630 fs/inode.c:587
 iput_final fs/inode.c:1705 [inline]
 iput+0x63b/0x7e0 fs/inode.c:1731
 dentry_unlink_inode+0x34f/0x440 fs/dcache.c:376
 __dentry_kill+0x447/0x660 fs/dcache.c:582
 dentry_kill+0xc0/0x2a0
 dput+0x165/0x320 fs/dcache.c:888
 __fput+0x662/0x910 fs/file_table.c:288
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:878
 do_group_exit+0x141/0x310 kernel/exit.c:1000
 get_signal+0x7a3/0x1630 kernel/signal.c:2896
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:208
 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:314
 irqentry_exit+0x12/0x40 kernel/entry/common.c:405
 exc_page_fault+0x47a/0x830 arch/x86/mm/fault.c:1608
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x95
Code: Unable to access opcode bytes at RIP 0x6b.
RSP: 002b:00000000200002a8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff1a8af1f80 RCX: 00007ff1a89c3e69
RDX: 00000000200002c0 RSI: 00000000200002a0 RDI: 0000000000008000
RBP: 00007ff1a8a1047a R08: 00000000200003c0 R09: 00000000200003c0
R10: 0000000020000300 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff1a8af1f80 R15: 00007ffeca479228
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/15 22:50 android13-5.15-lts ad06eaf051cd b9af7e61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in start_this_handle
2024/04/15 13:29 android13-5.15-lts ad06eaf051cd b9af7e61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in start_this_handle
2024/04/10 22:48 android13-5.15-lts 993bed180178 4320ec32 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in start_this_handle
2024/04/05 13:09 android13-5.15-lts 993bed180178 77230c29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in start_this_handle
2024/03/16 13:18 android13-5.15-lts 993bed180178 d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in start_this_handle
2024/03/08 03:23 android13-5.15-lts 993bed180178 cf82cde1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: scheduling while atomic in start_this_handle
* Struck through repros no longer work on HEAD.