syzbot


kernel BUG in ocfs2_write_block

Status: upstream: reported C repro on 2024/10/28 08:07
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+609ea64bc76a4623cbda@syzkaller.appspotmail.com
First crash: 24d, last: 24d
Bug presence (1)
Date Name Commit Repro Result
2024/11/08 upstream (ToT) 906bd684e4b1 C [report] kernel BUG in ocfs2_write_block
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in ocfs2_write_block ocfs2 C inconclusive 11 1d12h 63d 0/28 upstream: reported C repro on 2024/09/19 00:02

Sample crash report:
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
------------[ cut here ]------------
kernel BUG at fs/ocfs2/buffer_head_io.c:45!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4291 Comm: syz-executor206 Not tainted 6.1.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_write_block+0x66c/0x7bc fs/ocfs2/buffer_head_io.c:45
lr : ocfs2_write_block+0x66c/0x7bc fs/ocfs2/buffer_head_io.c:45
sp : ffff800020f36a20
x29: ffff800020f36ac0 x28: 1fffe0001c88dace x27: ffff800020f36a40
x26: dfff800000000000 x25: ffff7000041e6d48 x24: ffff8000159cd360
x23: 0000000000000001 x22: 0000000000000000 x21: ffff0000da144000
x20: ffff0000e446d658 x19: ffff0000e172b2f0 x18: ffff800020f36d00
x17: ffff800018aab000 x16: ffff800012290d3c x15: 0000000000000000
x14: 1ffff00002b3a0b0 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800009e80888
x8 : ffff0000dbdcd340 x7 : ffff800009f5610c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80000831e9a4
x2 : ffff0000e172b2f0 x1 : 0000000000000000 x0 : 0000000000000002
Call trace:
 ocfs2_write_block+0x66c/0x7bc fs/ocfs2/buffer_head_io.c:45
 ocfs2_update_disk_slot+0x3e8/0x5ec fs/ocfs2/slot_map.c:197
 ocfs2_find_slot+0x490/0xac0 fs/ocfs2/slot_map.c:482
 ocfs2_mount_volume+0x170/0x1508 fs/ocfs2/super.c:1806
 ocfs2_fill_super+0x3adc/0x4a0c fs/ocfs2/super.c:1082
 mount_bdev+0x274/0x370 fs/super.c:1443
 ocfs2_mount+0x44/0x58 fs/ocfs2/super.c:1186
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x278/0x8fc fs/namespace.c:3056
 path_mount+0x590/0xe5c fs/namespace.c:3386
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount fs/namespace.c:3584 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: b40005f7 9799dbf7 17fffe95 9799dbf5 (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/28 08:19 linux-6.1.y 7ec6f9fa3d97 65e8686b .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 kernel BUG in ocfs2_write_block
2024/10/28 08:07 linux-6.1.y 7ec6f9fa3d97 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 kernel BUG in ocfs2_write_block
* Struck through repros no longer work on HEAD.