syzbot


kernel BUG at fs/reiserfs/lock.c:LINE!
Status: auto-closed as invalid on 2020/06/02 22:04
Reported-by: syzbot+0359fb081a66176b67d5@syzkaller.appspotmail.com
First crash: 845d, last: 845d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG at fs/reiserfs/lock.c:LINE! 13 1132d 1418d 0/22 auto-closed as invalid on 2019/10/19 15:58
linux-4.19 kernel BUG at fs/reiserfs/lock.c:LINE! 5 967d 1133d 0/1 auto-closed as invalid on 2020/02/01 11:28
linux-4.19 kernel BUG at fs/reiserfs/lock.c:LINE! (2) C done 2 828d 828d 1/1 fixed on 2020/03/21 18:15

Sample crash report:
kernel BUG at fs/reiserfs/lock.c:44!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 15602 Comm: syz-executor.5 Not tainted 4.14.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809855e5c0 task.stack: ffff888051be0000
RIP: 0010:reiserfs_write_unlock+0xd5/0x100 fs/reiserfs/lock.c:44
RSP: 0018:ffff888051be7af0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888075ac5240 RCX: ffffc90005e2c000
RDX: 0000000000040000 RSI: ffffffff81be1ec5 RDI: ffff888075ac52e8
RBP: ffff888051be7af8 R08: 0000000000000065 R09: ffff88809855ee60
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888075ac5240
R13: ffff88808b7c4840 R14: ffff888051be7c00 R15: ffff888051be7c80
FS:  00007ffaf5494700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000fae258 CR3: 00000000812c6000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 reiserfs_fill_super+0x2b46/0x2b60 fs/reiserfs/super.c:2221
 mount_bdev+0x2be/0x370 fs/super.c:1134
 get_super_block+0x35/0x40 fs/reiserfs/super.c:2607
 mount_fs+0x97/0x2a1 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45ddea
RSP: 002b:00007ffaf5493a68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffaf54946d4 RCX: 000000000045ddea
RDX: 00007ffaf5493ae0 RSI: 00000000200000c0 RDI: 00007ffaf5493b00
RBP: 000000000075bf20 R08: 00007ffaf5493b40 R09: 00007ffaf5493ae0
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 0000000000000bb1 R14: 00000000004cc8da R15: 0000000000000040
Code: 9e ff 5b 5d c3 e8 fc f5 9e ff 48 8d 7b 28 48 c7 83 a8 00 00 00 00 00 00 00 e8 d8 42 aa 04 e8 e3 f5 9e ff 5b 5d c3 e8 db f5 9e ff <0f> 0b e8 54 86 c9 ff eb b5 e8 6d 86 c9 ff e9 47 ff ff ff e8 63 
RIP: reiserfs_write_unlock+0xd5/0x100 fs/reiserfs/lock.c:44 RSP: ffff888051be7af0
---[ end trace 900c9bdbfe65943f ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/02/03 22:03 linux-4.14.y 9fa690a2a016 93e5e335 .config log report