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kernel BUG in __ocfs2_move_extents_range

Status: auto-obsoleted due to no activity on 2025/11/27 09:31
Reported-by: syzbot+99b56049729f07ad8e0c@syzkaller.appspotmail.com
First crash: 188d, last: 188d
▶ ▼ 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 C 64 74d 314d 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 3 9d08h 54d 0/3 upstream: reported on 2026/01/01 01:22
linux-6.1 kernel BUG in __ocfs2_move_extents_range -1 3 183d 190d 0/3 auto-obsoleted due to no activity on 2025/12/03 01:59
linux-6.1 kernel BUG in __ocfs2_move_extents_range (2) -1 1 9d06h 9d06h 0/3 upstream: reported on 2026/02/15 00:17
linux-6.6 kernel BUG in __ocfs2_move_extents_range -1 1 9d08h 9d08h 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: 0 PID: 4234 Comm: syz.0.20 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_block_group_set_bits+0x4d0/0x640 fs/ocfs2/suballoc.c:1349
lr : ocfs2_block_group_set_bits+0x4d0/0x640 fs/ocfs2/suballoc.c:1349
sp : ffff80001fe471e0
x29: ffff80001fe47260 x28: ffff700003fc8e7c x27: ffff0000de82d2b8
x26: 0000000000000025 x25: ffff0000eaecd00c x24: ffff0000ea69cfb8
x23: dfff800000000000 x22: 0000000000000003 x21: 0000000000000044
x20: 1ffff00003fc8e40 x19: ffff0000eaecd000 x18: 0000000000000000
x17: 0000000000000002 x16: ffff800009cbfac0 x15: 00000000fffffffc
x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000080000
x11: 000000000007ffff x10: ffff800023e49000 x9 : ffff800009cd0eb0
x8 : 0000000000080000 x7 : ffff800008ddb3a4 x6 : 0000000000000000
x5 : 0000000000000044 x4 : 0000000000000003 x3 : ffff0000de82d2b8
x2 : ffff0000eaecd000 x1 : 0000000000000025 x0 : 0000000000000044
Call trace:
 ocfs2_block_group_set_bits+0x4d0/0x640 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+0x204/0xc60 fs/ocfs2/ioctl.c:931
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __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+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 17ffff67 979ea157 d4210000 979ea155 (d4210000) 
---[ end trace 59309626a57a7509 ]---

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/19 09:31 linux-5.15.y c79648372d02 523f460e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 kernel BUG in __ocfs2_move_extents_range
* Struck through repros no longer work on HEAD.