syzbot


kernel BUG in gfs2_assert_warn_i

Status: upstream: reported on 2024/09/12 09:46
Subsystems: gfs2
[Documentation on labels]
Reported-by: syzbot+ffe01cefd437cbde362b@syzkaller.appspotmail.com
First crash: 8d21h, last: 8d21h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [gfs2?] kernel BUG in gfs2_assert_warn_i 0 (1) 2024/09/12 09:46

Sample crash report:
gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed - function = gfs2_qd_dispose, file = fs/gfs2/quota.c, line = 129
------------[ cut here ]------------
kernel BUG at fs/gfs2/util.c:414!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 76 Comm: kswapd0 Not tainted 6.11.0-rc6-syzkaller-00363-g89f5e14d05b4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:gfs2_assert_warn_i+0x2df/0x2f0 fs/gfs2/util.c:414
Code: fe 48 c7 c7 40 a9 4f 8c 48 89 ee 48 8b 54 24 08 48 8b 4c 24 10 4c 8b 44 24 18 44 8b 4c 24 04 e8 87 88 ce 07 e8 e2 73 ab fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc90000e57328 EFLAGS: 00010293
RAX: ffffffff83e818ce RBX: 0000000000000004 RCX: ffff88801f3f8000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffff8880119ec000 R08: ffffffff83e81787 R09: 1ffff920001cae04
R10: dffffc0000000000 R11: fffff520001cae05 R12: ffff8880119ec2bc
R13: 00000000000003e8 R14: 1ffff1100233d857 R15: 0000000000000126
FS:  0000000000000000(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f391d5a6000 CR3: 000000001e06e000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_qd_dispose+0x4af/0x5b0 fs/gfs2/quota.c:129
 gfs2_qd_list_dispose fs/gfs2/quota.c:146 [inline]
 gfs2_qd_shrink_scan+0x2ae/0x360 fs/gfs2/quota.c:185
 do_shrink_slab+0x701/0x1160 mm/shrinker.c:435
 shrink_slab+0x1093/0x14d0 mm/shrinker.c:662
 shrink_one+0x43b/0x850 mm/vmscan.c:4795
 shrink_many mm/vmscan.c:4856 [inline]
 lru_gen_shrink_node mm/vmscan.c:4934 [inline]
 shrink_node+0x3799/0x3de0 mm/vmscan.c:5914
 kswapd_shrink_node mm/vmscan.c:6742 [inline]
 balance_pgdat mm/vmscan.c:6934 [inline]
 kswapd+0x1cbc/0x3720 mm/vmscan.c:7203
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/09 00:08 upstream 89f5e14d05b4 9750182a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in gfs2_assert_warn_i
* Struck through repros no longer work on HEAD.