syzbot


kernel BUG in ocfs2_iget

Status: upstream: reported C repro on 2024/11/23 23:28
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+647084ad32e990962697@syzkaller.appspotmail.com
First crash: 27d, last: 13d
Bug presence (1)
Date Name Commit Repro Result
2024/11/24 upstream (ToT) 9f16d5e6f220 C [report] kernel BUG in ocfs2_iget
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in ocfs2_iget ocfs2 C inconclusive 212 9h02m 128d 0/28 upstream: reported C repro on 2024/08/15 10:47
linux-6.1 kernel BUG in ocfs2_iget origin:upstream C 3 20d 21d 0/3 upstream: reported C repro on 2024/11/29 23:27
Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/12/08 09:14 15m retest repro linux-5.15.y report log
2024/12/08 09:14 15m retest repro linux-5.15.y report log

Sample crash report:
(syz-executor879,4017,0):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-executor879,4017,0):ocfs2_read_locked_inode:536 ERROR: Inode 21: system file state is ambiguous
------------[ cut here ]------------
kernel BUG at fs/ocfs2/inode.c:536!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4017 Comm: syz-executor879 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_read_locked_inode fs/ocfs2/inode.c:533 [inline]
pc : ocfs2_iget+0x1c48/0x1e94 fs/ocfs2/inode.c:159
lr : ocfs2_read_locked_inode fs/ocfs2/inode.c:533 [inline]
lr : ocfs2_iget+0x1c48/0x1e94 fs/ocfs2/inode.c:159
sp : ffff80001d0d6ac0
x29: ffff80001d0d6d00 x28: ffff700003a1ad60 x27: dfff800000000000
x26: 0000000000000000 x25: ffff0001892b7a00 x24: 1ffff00003a1ad70
x23: dfff800000000000 x22: 1000000000000000 x21: ffff80001d0d6c00
x20: ffff80001d0d6c60 x19: ffff80001d0d6c20 x18: 1fffe00036831b8e
x17: 1fffe00036831b8e x16: ffff8000082ec8b8 x15: ffff800014b5fa40
x14: 1ffff0000295806a x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 8b8348a289402600
x8 : 8b8348a289402600 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000825929c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000064
Call trace:
 ocfs2_read_locked_inode fs/ocfs2/inode.c:533 [inline]
 ocfs2_iget+0x1c48/0x1e94 fs/ocfs2/inode.c:159
 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:142 [inline]
 ocfs2_get_system_file_inode+0x304/0x6b8 fs/ocfs2/sysfile.c:112
 ocfs2_init_global_system_inodes+0x2bc/0x618 fs/ocfs2/super.c:458
 ocfs2_initialize_super fs/ocfs2/super.c:2276 [inline]
 ocfs2_fill_super+0x394c/0x498c fs/ocfs2/super.c:995
 mount_bdev+0x274/0x370 fs/super.c:1400
 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1187
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611
 vfs_get_tree+0x90/0x274 fs/super.c:1530
 do_new_mount+0x278/0x8fc fs/namespace.c:3012
 path_mount+0x594/0x101c fs/namespace.c:3342
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount fs/namespace.c:3540 [inline]
 __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3540
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 913e8063 aa1303e0 52804302 94052186 (d4210000) 
---[ end trace c88afa54cf8fa645 ]---

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
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.