syzbot


kernel BUG in do_notify_parent

Status: auto-obsoleted due to no activity on 2022/09/28 21:14
Reported-by: syzbot+30fc148ddf2b12bc714a@syzkaller.appspotmail.com
First crash: 150d, last: 150d

Sample crash report:
------------[ cut here ]------------
kernel BUG at kernel/signal.c:2035!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25692 Comm: syz-executor.4 Not tainted 5.19.0-rc4-syzkaller-00044-g1a0e93df1e10 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2022
RIP: 0010:do_notify_parent+0xca5/0xe60 kernel/signal.c:2035
Code: 24 10 45 31 c0 b9 01 00 00 00 44 89 e7 48 8b 95 e0 05 00 00 e8 0c cb ff ff e9 14 fb ff ff e8 42 e6 2f 00 0f 0b e8 3b e6 2f 00 <0f> 0b e8 34 e6 2f 00 48 8d bd 08 06 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900054bfa48 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 1ffff92000a97f4c RCX: 0000000000000000
RDX: ffff888078f4a080 RSI: ffffffff8149b145 RDI: 0000000000000007
RBP: ffff888078f4a080 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000008000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000008000000 R14: ffff888078f4a080 R15: ffff88807c656800
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565a5708 CR3: 000000002e725000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 exit_notify kernel/exit.c:688 [inline]
 do_exit+0x2023/0x2a00 kernel/exit.c:815
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x2542/0x2600 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f98492ade31
Code: Unable to access opcode bytes at RIP 0x7f98492ade07.
RSP: 002b:00007f984a4c60b0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f984939bf60 RCX: 00007f98492ade31
RDX: 00007f984a4c60f0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f98492e305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007ffe3a6826bf R14: 00007f984a4c6300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_notify_parent+0xca5/0xe60 kernel/signal.c:2035
Code: 24 10 45 31 c0 b9 01 00 00 00 44 89 e7 48 8b 95 e0 05 00 00 e8 0c cb ff ff e9 14 fb ff ff e8 42 e6 2f 00 0f 0b e8 3b e6 2f 00 <0f> 0b e8 34 e6 2f 00 48 8d bd 08 06 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900054bfa48 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 1ffff92000a97f4c RCX: 0000000000000000
RDX: ffff888078f4a080 RSI: ffffffff8149b145 RDI: 0000000000000007
RBP: ffff888078f4a080 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000008000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000008000000 R14: ffff888078f4a080 R15: ffff88807c656800
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555565a5708 CR3: 000000002e725000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2022/06/30 21:14 upstream 1a0e93df1e10 1434eec0 .config log report info kernel BUG in do_notify_parent
* Struck through repros no longer work on HEAD.