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kernel BUG in __ocfs2_move_extents_range

Status: upstream: reported C repro on 2025/04/16 02:09
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+f2107d999290b8166267@syzkaller.appspotmail.com
First crash: 133d, last: 1d09h
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] kernel BUG in __ocfs2_move_extents_range 0 (2) 2025/08/17 08:12
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in __ocfs2_move_extents_range -1 2 3d17h 5d08h 0/3 upstream: reported on 2025/08/18 00:39
linux-5.15 kernel BUG in __ocfs2_move_extents_range -1 1 3d23h 3d23h 0/3 upstream: reported on 2025/08/19 09:31

Sample crash report:
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1382!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 6767 Comm: syz.0.17 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ocfs2_block_group_set_bits+0x780/0x8e8 fs/ocfs2/suballoc.c:1382
lr : ocfs2_block_group_set_bits+0x780/0x8e8 fs/ocfs2/suballoc.c:1382
sp : ffff8000a10b71a0
x29: ffff8000a10b7260 x28: ffff0000f456cfb8 x27: ffff0000c8f34000
x26: ffff0000f46155d8 x25: ffff0000c6265000 x24: 1ffff00014216e40
x23: ffff0000c626500c x22: dfff800000000000 x21: 0000000000000002
x20: 0000000000000004 x19: 0000000000000000 x18: 00000000ffffffff
x17: ffff800093507000 x16: ffff80008afd94bc x15: 0000000000000001
x14: 0000000000000000 x13: 00000000fffffffc x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000d38dbd00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000004 x4 : 0000000000000001 x3 : ffff0000def9fae0
x2 : ffff0000c6265000 x1 : 0000000000000002 x0 : 0000000000000004
Call trace:
 ocfs2_block_group_set_bits+0x780/0x8e8 fs/ocfs2/suballoc.c:1382 (P)
 ocfs2_move_extent fs/ocfs2/move_extents.c:687 [inline]
 __ocfs2_move_extents_range+0x2104/0x2ad8 fs/ocfs2/move_extents.c:859
 ocfs2_move_extents+0x314/0x7f0 fs/ocfs2/move_extents.c:926
 ocfs2_ioctl_move_extents+0x424/0x5f0 fs/ocfs2/move_extents.c:1052
 ocfs2_ioctl+0x1c4/0x738 fs/ocfs2/ioctl.c:946
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:584
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: 17ffffa8 9795f801 d4210000 9795f7ff (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (24):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/17 08:11 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 1804e95e .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci-upstream-gce-arm64 kernel BUG in __ocfs2_move_extents_range
2025/08/21 23:43 upstream 32b7144f806e 3e79b825 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/21 04:58 upstream 41cd3fd15263 0b9605c8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/20 19:17 upstream b19a97d57c15 bd178e57 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/20 09:08 upstream b19a97d57c15 79512909 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/20 02:07 upstream b19a97d57c15 79512909 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/19 12:43 upstream be48bcf004f9 523f460e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/18 18:39 upstream c17b750b3ad9 dcc075fb .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/18 08:37 upstream 8d561baae505 dcc075fb .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/17 12:48 upstream 99bade344cfa dcc075fb .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/11 11:00 upstream 8f5ae30d69d7 32a0e5ed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/08 19:31 upstream bec077162bd0 56444e07 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/07/25 20:48 upstream 2942242dde89 fb8f743d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/07/03 05:37 upstream b4911fb0b060 115ceea7 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/06/27 07:01 upstream f02769e7f272 803ce19b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/06/26 17:06 upstream ee88bddf7f2f 1ae8177e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/06/21 08:27 upstream 11313e2f7812 d6cdfb8a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/06/05 13:34 upstream ec7714e49479 6b6b5f21 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/04/25 16:27 upstream 02ddfb981de8 dea5c7e4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/04/20 08:22 upstream 119009db2674 2a20f901 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/04/12 01:56 upstream e618ee89561b 0bd6db41 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in __ocfs2_move_extents_range
2025/08/17 23:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in __ocfs2_move_extents_range
2025/08/17 23:14 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in __ocfs2_move_extents_range
2025/06/09 17:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci d7fa1af5b33e 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in __ocfs2_move_extents_range
* Struck through repros no longer work on HEAD.