loop0: detected capacity change from 0 to 32768 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 5339 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_find_dir_space_id fs/ocfs2/dir.c:3432 [inline] RIP: 0010:ocfs2_prepare_dir_for_insert+0x2f14/0x5420 fs/ocfs2/dir.c:4296 Code: ab 8b e8 0f 6c 19 00 e9 fd 11 00 00 e8 85 66 1d fe e9 a7 02 00 00 e8 7b 66 1d fe 49 8d 7f 08 4d 8d 77 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 30 20 00 00 4c 89 f0 48 c1 e8 03 42 0f RSP: 0018:ffffc9000d486340 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888011f25e48 RCX: 0000000000100000 RDX: ffffc9000ee71000 RSI: 00000000000034ef RDI: 0000000000000008 RBP: ffffc9000d486a50 R08: ffffc9000d486cb0 R09: 608b7c562adf3b03 R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000 R13: ffff888011f25df8 R14: 0000000000000009 R15: 0000000000000000 FS: 00007f8acae166c0(0000) GS:ffff88808d683000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa32e94a000 CR3: 0000000011441000 CR4: 0000000000352ef0 Call Trace: __ocfs2_prepare_orphan_dir+0x145/0x2c0 fs/ocfs2/namei.c:2179 ocfs2_prepare_orphan_dir+0xf9/0x3f0 fs/ocfs2/namei.c:2224 ocfs2_add_inode_to_orphan+0x1d6/0x710 fs/ocfs2/namei.c:2672 ocfs2_dio_wr_get_block+0x7ea/0x1770 fs/ocfs2/aops.c:2186 get_more_blocks fs/direct-io.c:648 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x16ff/0x3490 fs/direct-io.c:1243 ocfs2_direct_IO+0x25f/0x2d0 fs/ocfs2/aops.c:2441 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4234 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4403 ocfs2_file_write_iter+0x1582/0x1cf0 fs/ocfs2/file.c:2469 iter_file_splice_write+0x972/0x10b0 fs/splice.c:738 do_splice_from fs/splice.c:938 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1161 splice_direct_to_actor+0x5a8/0xcc0 fs/splice.c:1105 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1230 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ac9f8f7c9 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:00007f8acae16038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f8aca1e5fa0 RCX: 00007f8ac9f8f7c9 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007f8aca013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8aca1e6038 R14: 00007f8aca1e5fa0 R15: 00007ffe0eeef9f8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3432 [inline] RIP: 0010:ocfs2_prepare_dir_for_insert+0x2f14/0x5420 fs/ocfs2/dir.c:4296 Code: ab 8b e8 0f 6c 19 00 e9 fd 11 00 00 e8 85 66 1d fe e9 a7 02 00 00 e8 7b 66 1d fe 49 8d 7f 08 4d 8d 77 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 30 20 00 00 4c 89 f0 48 c1 e8 03 42 0f RSP: 0018:ffffc9000d486340 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888011f25e48 RCX: 0000000000100000 RDX: ffffc9000ee71000 RSI: 00000000000034ef RDI: 0000000000000008 RBP: ffffc9000d486a50 R08: ffffc9000d486cb0 R09: 608b7c562adf3b03 R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000 R13: ffff888011f25df8 R14: 0000000000000009 R15: 0000000000000000 FS: 00007f8acae166c0(0000) GS:ffff88808d683000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563824770f08 CR3: 0000000011441000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: e8 0f 6c 19 00 call 0x196c14 5: e9 fd 11 00 00 jmp 0x1207 a: e8 85 66 1d fe call 0xfe1d6694 f: e9 a7 02 00 00 jmp 0x2bb 14: e8 7b 66 1d fe call 0xfe1d6694 19: 49 8d 7f 08 lea 0x8(%r15),%rdi 1d: 4d 8d 77 09 lea 0x9(%r15),%r14 21: 48 89 f8 mov %rdi,%rax 24: 48 c1 e8 03 shr $0x3,%rax * 28: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2d: 84 c0 test %al,%al 2f: 0f 85 30 20 00 00 jne 0x2065 35: 4c 89 f0 mov %r14,%rax 38: 48 c1 e8 03 shr $0x3,%rax 3c: 42 rex.X 3d: 0f .byte 0xf