syzbot


kernel BUG in ocfs2_iget

Status: upstream: reported C repro on 2024/11/23 23:28
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+647084ad32e990962697@syzkaller.appspotmail.com
First crash: 233d, last: 1d10h
Bug presence (1)
Date Name Commit Repro Result
2025/06/29 upstream (ToT) dfba48a70cb6 C [report] kernel BUG in ocfs2_iget
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in ocfs2_iget ocfs2 -1 C inconclusive 831 2h48m 333d 0/29 upstream: reported C repro on 2024/08/15 10:47
linux-6.1 kernel BUG in ocfs2_iget origin:upstream -1 C error 16 20h54m 227d 0/3 upstream: reported C repro on 2024/11/29 23:27
Last patch testing requests (5)
Created Duration User Patch Repo Result
2025/07/07 21:56 15m retest repro linux-5.15.y report log
2025/06/20 03:54 18m retest repro linux-5.15.y report log
2025/06/20 03:54 20m retest repro linux-5.15.y report log
2025/05/27 21:46 11m retest repro linux-5.15.y report log
2025/04/08 00:55 11m retest repro linux-5.15.y report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/04/01 14:07 2h11m fix candidate upstream error job log

Sample crash report:
(syz-executor293,4170,0):ocfs2_read_locked_inode:536 ERROR: bug expression: !!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE)
(syz-executor293,4170,0):ocfs2_read_locked_inode:536 ERROR: Inode 72: system file state is ambiguous
------------[ cut here ]------------
kernel BUG at fs/ocfs2/inode.c:536!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4170 Comm: syz-executor293 Not tainted 5.15.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ocfs2_read_locked_inode fs/ocfs2/inode.c:533 [inline]
RIP: 0010:ocfs2_iget+0x18b2/0x1990 fs/ocfs2/inode.c:159
Code: 89 bc 24 60 01 00 00 4c 8b 84 24 a0 01 00 00 4c 89 f7 48 c7 c6 d2 9d b8 8b ba 18 02 00 00 48 c7 c1 c0 c4 47 8a e8 be 7d 13 00 <0f> 0b e8 47 ef 5c fe 0f 0b e8 40 ef 5c fe 31 f6 65 ff 0d df 9c e7
RSP: 0018:ffffc90002f8ed80 EFLAGS: 00010246
RAX: 8dc026121434e700 RBX: ffffc90002f8eec0 RCX: 8dc026121434e700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90002f8eff0 R08: dffffc0000000000 R09: ffffed10172067a8
R10: ffffed10172067a8 R11: 1ffff110172067a7 R12: ffff88806fbed02c
R13: 1ffff920005f1db8 R14: ffffc90002f8eee0 R15: 1000000000000000
FS:  0000555588e6b380(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f904a196000 CR3: 0000000024608000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:142 [inline]
 ocfs2_get_system_file_inode+0x349/0x760 fs/ocfs2/sysfile.c:112
 ocfs2_init_local_system_inodes fs/ocfs2/super.c:488 [inline]
 ocfs2_mount_volume+0x32a/0x1530 fs/ocfs2/super.c:1816
 ocfs2_fill_super+0x2caf/0x4d80 fs/ocfs2/super.c:1083
 mount_bdev+0x287/0x3c0 fs/super.c:1400
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x24a/0xa40 fs/namespace.c:3010
 do_mount fs/namespace.c:3353 [inline]
 __do_sys_mount fs/namespace.c:3561 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3538
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f80a635497a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc037fe2f8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc037fe310 RCX: 00007f80a635497a
RDX: 0000200000004440 RSI: 0000200000000040 RDI: 00007ffc037fe310
RBP: 0000200000000040 R08: 00007ffc037fe350 R09: 0000000000004448
R10: 00000000000008c0 R11: 0000000000000282 R12: 0000200000004440
R13: 00007ffc037fe350 R14: 0000000000000003 R15: 00000000000008c0
 </TASK>
Modules linked in:
---[ end trace 2fe5c38f2cdfe57c ]---
RIP: 0010:ocfs2_read_locked_inode fs/ocfs2/inode.c:533 [inline]
RIP: 0010:ocfs2_iget+0x18b2/0x1990 fs/ocfs2/inode.c:159
Code: 89 bc 24 60 01 00 00 4c 8b 84 24 a0 01 00 00 4c 89 f7 48 c7 c6 d2 9d b8 8b ba 18 02 00 00 48 c7 c1 c0 c4 47 8a e8 be 7d 13 00 <0f> 0b e8 47 ef 5c fe 0f 0b e8 40 ef 5c fe 31 f6 65 ff 0d df 9c e7
RSP: 0018:ffffc90002f8ed80 EFLAGS: 00010246
RAX: 8dc026121434e700 RBX: ffffc90002f8eec0 RCX: 8dc026121434e700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc90002f8eff0 R08: dffffc0000000000 R09: ffffed10172067a8
R10: ffffed10172067a8 R11: 1ffff110172067a7 R12: ffff88806fbed02c
R13: 1ffff920005f1db8 R14: ffffc90002f8eee0 R15: 1000000000000000
FS:  0000555588e6b380(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f904a196000 CR3: 0000000024608000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (22):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/23 11:35 linux-5.15.y 1c700860e8bc d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2025/03/08 17:12 linux-5.15.y c16c81c81336 7e3bd60d .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2024/11/24 00:59 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2024/11/24 00:10 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/06/23 11:19 linux-5.15.y 1c700860e8bc d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2025/05/11 07:54 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2025/05/10 21:20 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2025/05/04 18:49 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2024/12/29 10:12 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2024/12/28 16:26 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan kernel BUG in ocfs2_iget
2025/07/13 20:10 linux-5.15.y 2f693b607545 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/06/23 16:16 linux-5.15.y 1c700860e8bc d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/06/01 23:24 linux-5.15.y 98f47d0e9b8c 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/05/04 07:15 linux-5.15.y 16fdf2c7111b b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/04/22 14:14 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/03/14 09:24 linux-5.15.y 0c935c049b5c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/03/08 16:39 linux-5.15.y c16c81c81336 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/02/24 20:42 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/01/19 12:41 linux-5.15.y 4735586da88e f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/01/18 15:21 linux-5.15.y 4735586da88e f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2025/01/13 06:13 linux-5.15.y 4735586da88e 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
2024/11/23 23:27 linux-5.15.y 0a51d2d4527b 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in ocfs2_iget
* Struck through repros no longer work on HEAD.