------------[ 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 ]---