kernel BUG in __ocfs2_move_extents_range

Status: auto-obsoleted due to no activity on 2025/12/03 01:59
Reported-by: syzbot+a7a95f489958e3f4148d@syzkaller.appspotmail.com
First crash: 364d, last: 357d
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in __ocfs2_move_extents_range ocfs2 -1 syz, C 64 248d 488d 0/29 auto-obsoleted due to no activity on 2026/02/20 04:26
linux-5.15 kernel BUG in __ocfs2_move_extents_range (2) -1 5 120d 228d 0/3 auto-obsoleted due to no activity on 2026/07/27 16:03
linux-6.1 kernel BUG in __ocfs2_move_extents_range (2) -1 4 158d 183d 0/3 auto-obsoleted due to no activity on 2026/06/20 07:19
linux-5.15 kernel BUG in __ocfs2_move_extents_range -1 1 363d 363d 0/3 auto-obsoleted due to no activity on 2025/11/27 09:31
linux-6.6 kernel BUG in __ocfs2_move_extents_range -1 3 30d 183d 0/2 upstream: reported on 2026/02/14 21:57

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1349!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4932 Comm: syz.0.104 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_block_group_set_bits+0x510/0x6c4 fs/ocfs2/suballoc.c:1349
lr : ocfs2_block_group_set_bits+0x510/0x6c4 fs/ocfs2/suballoc.c:1349
sp : ffff8000215771e0
x29: ffff800021577260 x28: ffff7000042aee7c x27: ffff0000d7e18740
x26: 0000000000000002 x25: ffff0000e981500c x24: ffff0000e252cfb8
x23: dfff800000000000 x22: 0000000000000003 x21: 0000000000000357
x20: 1ffff000042aee40 x19: ffff0000e9815000 x18: 0000000000000000
x17: ffff8000181e7000 x16: ffff8000082ca1cc x15: 0000000000000002
x14: 00000000fffffffc x13: 0000000000ff0100 x12: 0000000000080000
x11: 000000000001cceb x10: ffff8000251bd000 x9 : ffff800009db27a0
x8 : 000000000001ccec x7 : ffff800008e970e0 x6 : 0000000000000000
x5 : 0000000000000003 x4 : 0000000000000357 x3 : ffff0000d7e18740
x2 : ffff0000e9815000 x1 : 0000000000000002 x0 : 0000000000000003
Call trace:
 ocfs2_block_group_set_bits+0x510/0x6c4 fs/ocfs2/suballoc.c:1349
 ocfs2_move_extent fs/ocfs2/move_extents.c:687 [inline]
 __ocfs2_move_extents_range+0x208c/0x2aac fs/ocfs2/move_extents.c:860
 ocfs2_move_extents+0x314/0x7e0 fs/ocfs2/move_extents.c:927
 ocfs2_ioctl_move_extents+0x3fc/0x5c8 fs/ocfs2/move_extents.c:1053
 ocfs2_ioctl+0x204/0xaf4 fs/ocfs2/ioctl.c:930
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 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: 17ffff5e 979bbcec d4210000 979bbcea (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/25 01:58 linux-6.1.y 0bc96de781b4 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 kernel BUG in __ocfs2_move_extents_range
2025/08/19 15:56 linux-6.1.y 0bc96de781b4 254a27c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 kernel BUG in __ocfs2_move_extents_range
2025/08/18 00:38 linux-6.1.y 0bc96de781b4 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 kernel BUG in __ocfs2_move_extents_range
* Struck through repros no longer work on HEAD.