(syz.0.0,5322,0):ocfs2_dio_end_io:2401 ERROR: Direct IO failed, bytes = -28 ------------[ cut here ]------------ kernel BUG at fs/ocfs2/suballoc.c:1382! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ocfs2_block_group_set_bits+0x874/0x9a0 fs/ocfs2/suballoc.c:1382 Code: 07 fe c1 38 c1 0f 8c ab fe ff ff 4c 89 e7 89 f3 e8 f1 27 79 fe 89 de e9 9a fe ff ff e8 65 e8 11 fe 90 0f 0b e8 5d e8 11 fe 90 <0f> 0b f3 0f 1e fa 65 8b 1d 53 b2 c0 0e bf 07 00 00 00 89 de e8 83 RSP: 0018:ffffc9000fc3f340 EFLAGS: 00010287 RAX: ffffffff83ae2dd3 RBX: 0000000000000001 RCX: 0000000000100000 RDX: ffffc9000dbc2000 RSI: 0000000000005d52 RDI: 0000000000005d53 RBP: ffffc9000fc3f460 R08: 0000000000000007 R09: 0000000000000002 R10: 00000000fffffffc R11: 0000000000000002 R12: 1ffff1100838fe01 R13: 0000000000000002 R14: ffff8880123fcfb8 R15: dffffc0000000000 FS: 00007f54e4ad56c0(0000) GS:ffff88808d732000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c0 CR3: 0000000011bf2000 CR4: 0000000000352ef0 Call Trace: ocfs2_move_extent fs/ocfs2/move_extents.c:687 [inline] __ocfs2_move_extents_range+0x2988/0x3390 fs/ocfs2/move_extents.c:859 ocfs2_move_extents+0x378/0x960 fs/ocfs2/move_extents.c:931 ocfs2_ioctl_move_extents+0x53e/0x710 fs/ocfs2/move_extents.c:1057 ocfs2_ioctl+0x191/0x750 fs/ocfs2/ioctl.c:942 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f54e3b8f6c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f54e4ad5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f54e3de5fa0 RCX: 00007f54e3b8f6c9 RDX: 00002000000000c0 RSI: 0000000040406f06 RDI: 000000000000000d RBP: 00007f54e3c11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f54e3de6038 R14: 00007f54e3de5fa0 R15: 00007ffc6ff999f8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_block_group_set_bits+0x874/0x9a0 fs/ocfs2/suballoc.c:1382 Code: 07 fe c1 38 c1 0f 8c ab fe ff ff 4c 89 e7 89 f3 e8 f1 27 79 fe 89 de e9 9a fe ff ff e8 65 e8 11 fe 90 0f 0b e8 5d e8 11 fe 90 <0f> 0b f3 0f 1e fa 65 8b 1d 53 b2 c0 0e bf 07 00 00 00 89 de e8 83 RSP: 0018:ffffc9000fc3f340 EFLAGS: 00010287 RAX: ffffffff83ae2dd3 RBX: 0000000000000001 RCX: 0000000000100000 RDX: ffffc9000dbc2000 RSI: 0000000000005d52 RDI: 0000000000005d53 RBP: ffffc9000fc3f460 R08: 0000000000000007 R09: 0000000000000002 R10: 00000000fffffffc R11: 0000000000000002 R12: 1ffff1100838fe01 R13: 0000000000000002 R14: ffff8880123fcfb8 R15: dffffc0000000000 FS: 00007f54e4ad56c0(0000) GS:ffff88808d732000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c0 CR3: 0000000011bf2000 CR4: 0000000000352ef0