syzbot


general protection fault in kill_orphaned_pgrp

Status: auto-closed as invalid on 2020/05/09 16:02
Reported-by: syzbot+cd5605f3ed074858cddf@syzkaller.appspotmail.com
First crash: 909d, last: 909d

Sample crash report:
kobject: 'kvm' (ffff8880a7b8a250): kobject_uevent_env
kobject: 'kvm' (ffff8880a7b8a250): fill_kobj_path: path = '/devices/virtual/misc/kvm'
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
Modules linked in:
CPU: 1 PID: 18784 Comm: modprobe Not tainted 4.14.163-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88805e3e4200 task.stack: ffff888049270000
RIP: 0010:task_pgrp include/linux/sched.h:1177 [inline]
RIP: 0010:kill_orphaned_pgrp+0xbc/0x310 kernel/exit.c:394
RSP: 0018:ffff888049277d60 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 00000000026b904f
RDX: 00000000000000ad RSI: 0000000000000000 RDI: 0000000000000568
RBP: ffff888049277d80 R08: 0000000000000ec1 R09: ffffffff89574008
R10: ffff88805e3e4a80 R11: ffff88805e3e4200 R12: ffff88805e3e4200
R13: ffff88805e3e4200 R14: ffffffff87f5e660 R15: ffff888048a59900
FS:  00007f0c6ebd5700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc12401fe0 CR3: 000000008961e000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_notify kernel/exit.c:714 [inline]
 do_exit+0x1c88/0x2cd0 kernel/exit.c:878
 do_group_exit+0x111/0x330 kernel/exit.c:955
 SYSC_exit_group kernel/exit.c:966 [inline]
 SyS_exit_group+0x1d/0x20 kernel/exit.c:964
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f0c6e4c91e8
RSP: 002b:00007ffcb19c7ff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f0c6e4c91e8
RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f0c6e79e840 R08: 00000000000000e7 R09: ffffffffffffffa8
R10: 00007f0c6e7a4740 R11: 0000000000000246 R12: 00007f0c6e79e840
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
Code: ea 03 80 3c 02 00 0f 85 22 02 00 00 48 8b 9b 18 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 68 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ef 01 00 00 4c 39 b3 68 05 00 00 74 59 e8 cc 
RIP: task_pgrp include/linux/sched.h:1177 [inline] RSP: ffff888049277d60
RIP: kill_orphaned_pgrp+0xbc/0x310 kernel/exit.c:394 RSP: ffff888049277d60
---[ end trace 2a25262a568880c9 ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/01/10 16:01 linux-4.14.y b0cdffaa546e 532ec44e .config log report