syzbot


kernel BUG in qd_put

Status: auto-obsoleted due to no activity on 2023/12/15 08:52
Subsystems: gfs2
[Documentation on labels]
Reported-by: syzbot+ac749796740f1d4348bc@syzkaller.appspotmail.com
First crash: 230d, last: 230d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [gfs2?] kernel BUG in qd_put 0 (1) 2023/09/10 07:54
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in qd_put (2) gfs2 3 97d 95d 0/26 upstream: reported on 2024/01/20 00:10

Sample crash report:
kernel BUG at fs/gfs2/quota.c:323!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5188 Comm: syz-executor.2 Not tainted 6.5.0-syzkaller-11938-g65d6e954e378 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:qd_put+0x132/0x190 fs/gfs2/quota.c:323
Code: c7 43 70 00 00 00 00 48 8d 73 78 e8 48 7e 1e fe 4c 89 e7 e8 f0 24 9a 06 5b 5d 41 5c 41 5d 41 5e e9 c3 ef e0 fd e8 be ef e0 fd <0f> 0b e8 b7 ef e0 fd 4c 89 e7 e8 cf 07 7a 00 4c 89 e7 e8 c7 24 9a
RSP: 0018:ffffc90004017c30 EFLAGS: 00010293

RAX: 0000000000000000 RBX: ffff8880269c23f0 RCX: 0000000000000000
RDX: ffff8880164fc800 RSI: ffffffff83a6b442 RDI: 0000000000000005
RBP: 00000000ffffff80 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffff80 R11: 0000000000000000 R12: ffff8880269c2420
R13: ffff8880269c2460 R14: ffff8880276aca68 R15: ffff88802441f008
FS:  0000000000000000(0000) GS:ffff88802c600000(0063) knlGS:000000005771d400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7268bb0 CR3: 0000000076871000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_quota_sync+0x44b/0x630 fs/gfs2/quota.c:1350
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:667
 sync_filesystem fs/sync.c:56 [inline]
 sync_filesystem+0x109/0x280 fs/sync.c:30
 generic_shutdown_super+0x7e/0x3c0 fs/super.c:666
 kill_block_super+0x3b/0x70 fs/super.c:1646
 gfs2_kill_sb+0x361/0x410 fs/gfs2/ops_fstype.c:1811
 deactivate_locked_super+0x9a/0x170 fs/super.c:481
 deactivate_super+0xde/0x100 fs/super.c:514
 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
 task_work_run+0x14d/0x240 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
 __do_fast_syscall_32+0x6d/0xe0 arch/x86/entry/common.c:181
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fe8579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000ffd6aa88 EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000ffd6ab30 RCX: 000000000000000a
RDX: 00000000f7353ff4 RSI: 00000000f72a53bd RDI: 00000000ffd6bbd4
RBP: 00000000ffd6ab30 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qd_put+0x132/0x190 fs/gfs2/quota.c:323
Code: c7 43 70 00 00 00 00 48 8d 73 78 e8 48 7e 1e fe 4c 89 e7 e8 f0 24 9a 06 5b 5d 41 5c 41 5d 41 5e e9 c3 ef e0 fd e8 be ef e0 fd <0f> 0b e8 b7 ef e0 fd 4c 89 e7 e8 cf 07 7a 00 4c 89 e7 e8 c7 24 9a
RSP: 0018:ffffc90004017c30 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880269c23f0 RCX: 0000000000000000
RDX: ffff8880164fc800 RSI: ffffffff83a6b442 RDI: 0000000000000005
RBP: 00000000ffffff80 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffff80 R11: 0000000000000000 R12: ffff8880269c2420
R13: ffff8880269c2460 R14: ffff8880276aca68 R15: ffff88802441f008
FS:  0000000000000000(0000) GS:ffff88802c600000(0063) knlGS:000000005771d400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7268bb0 CR3: 0000000076871000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/06 08:51 upstream 65d6e954e378 0b6286dc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in qd_put
2023/09/06 07:46 upstream 65d6e954e378 0b6286dc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in qd_put
* Struck through repros no longer work on HEAD.