syzbot


general protection fault in mm_update_next_owner

Status: auto-closed as invalid on 2020/12/18 13:04
Reported-by: syzbot+ca9e6e1b6d56d6d093f3@syzkaller.appspotmail.com
First crash: 896d, last: 678d
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: unable to handle kernel paging request in mm_update_next_owner 21 143d 670d 0/1 auto-closed as invalid on 2022/06/06 03:00
linux-4.14 general protection fault in mm_update_next_owner (2) 6 421d 509d 0/1 auto-closed as invalid on 2021/09/01 20:39
linux-4.19 general protection fault in mm_update_next_owner 6 689d 808d 0/1 auto-closed as invalid on 2020/12/07 18:48
upstream general protection fault in mm_update_next_owner (2) 14 599d 802d 0/22 auto-closed as invalid on 2021/03/07 09:36
upstream general protection fault in mm_update_next_owner syz done done 1 1117d 1117d 13/22 fixed on 2019/08/27 17:15

Sample crash report:
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007ffee15b76ff R14: 00007f29e334a9c0 R15: 000000000118cf4c
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: 0 PID: 6135 Comm: syz-executor.0 Not tainted 4.14.193-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8882067920c0 task.stack: ffff8881eac28000
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:mm_update_next_owner+0x367/0x5b0 kernel/exit.c:451
RSP: 0018:ffff8881eac2fd48 EFLAGS: 00010202
RAX: 0000000000000002 RBX: dffffc0000000000 RCX: 0000000000000ec1
RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffff888000136a00
RBP: 0000000000000000 R08: ffff8880519b4670 R09: 000000000006008f
R10: ffff888206792948 R11: ffff8882067920c0 R12: ffff888053044080
R13: 0000000000000010 R14: ffff8882067920c0 R15: ffff8880537de680
FS:  0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31521000 CR3: 0000000206e29000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_mm kernel/exit.c:544 [inline]
 do_exit+0x940/0x27f0 kernel/exit.c:852
 do_group_exit+0x100/0x2e0 kernel/exit.c:962
 SYSC_exit_group kernel/exit.c:973 [inline]
 SyS_exit_group+0x19/0x20 kernel/exit.c:971
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45d4d9
RSP: 002b:00007ffee15b7918 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 000000000045d4d9
RDX: 0000000000416e21 RSI: fffffffffffffff7 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000216a4872 R09: 00007ffee15b7970
R10: 00000000216a486e R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffee15b7970 R14: 0000000000000001 R15: 00007ffee15b7980
Code: 00 48 8d bd 20 03 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 fb 01 00 00 48 8b ad 20 03 00 00 4c 8d 6d 10 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 d2 01 00 00 48 8b 45 10 48 8d a8 68 fa ff ff 
RIP: __read_once_size include/linux/compiler.h:183 [inline] RSP: ffff8881eac2fd48
RIP: mm_update_next_owner+0x367/0x5b0 kernel/exit.c:451 RSP: ffff8881eac2fd48
---[ end trace 658c82fe3f86e447 ]---

Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/08/20 13:03 linux-4.14.y 14b58326976d ed282a3a .config log report
ci2-linux-4-14 2020/05/27 19:40 linux-4.14.y 4f68020fef1c 9072c126 .config log report
ci2-linux-4-14 2020/05/07 10:44 linux-4.14.y d71f695ce745 98cbd87b .config log report
ci2-linux-4-14 2020/04/18 01:27 linux-4.14.y c10b57a567e4 435c6d53 .config log report
ci2-linux-4-14 2020/02/03 14:06 linux-4.14.y 9fa690a2a016 93e5e335 .config log report
ci2-linux-4-14 2020/01/15 04:39 linux-4.14.y c04fc6fa5c96 fa12bd3c .config log report