loop0: detected capacity change from 0 to 32768 JBD2: Ignoring recovery information on journal 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] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted 6.13.0-rc6-syzkaller-00051-geea6e4b4dfb8 #0 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:3407 [inline] RIP: 0010:ocfs2_prepare_dir_for_insert+0x32ed/0x5c40 fs/ocfs2/dir.c:4271 Code: 00 00 e8 f6 14 12 fe e9 ba 06 00 00 e8 ec 14 12 fe e9 4f 01 00 00 e8 e2 14 12 fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f RSP: 0018:ffffc900019be020 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000009 RCX: 0000000000100000 RDX: ffffc9000ead2000 RSI: 000000000000078e RDI: 0000000000000008 RBP: ffffc900019be830 R08: ffffffff838d428b R09: ffffffff838d99a7 R10: 0000000000000002 R11: ffff888000f2c880 R12: dffffc0000000000 R13: ffff888011b2ddf8 R14: 00000000000001c0 R15: 0000000000000000 FS: 00007fbf42be16c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf35dff000 CR3: 0000000040aba000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __ocfs2_prepare_orphan_dir+0x146/0x310 fs/ocfs2/namei.c:2177 ocfs2_prepare_orphan_dir+0x193/0x4d0 fs/ocfs2/namei.c:2222 ocfs2_add_inode_to_orphan+0x249/0x8d0 fs/ocfs2/namei.c:2670 ocfs2_dio_wr_get_block+0x7a5/0x18d0 fs/ocfs2/aops.c:2209 get_more_blocks fs/direct-io.c:648 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x1c87/0x4890 fs/direct-io.c:1243 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2464 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:3969 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4133 ocfs2_file_write_iter+0x19af/0x2180 fs/ocfs2/file.c:2469 iter_file_splice_write+0xbfa/0x1510 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x11b/0x220 fs/splice.c:1164 splice_direct_to_actor+0x586/0xc80 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0x289/0x3e0 fs/splice.c:1233 do_sendfile+0x564/0x8a0 fs/read_write.c:1363 __do_sys_sendfile64 fs/read_write.c:1424 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1410 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbf41d85d29 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:00007fbf42be1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fbf41f75fa0 RCX: 00007fbf41d85d29 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 00007fbf41e01b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000080000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbf41f75fa0 R15: 00007ffd67686788 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3407 [inline] RIP: 0010:ocfs2_prepare_dir_for_insert+0x32ed/0x5c40 fs/ocfs2/dir.c:4271 Code: 00 00 e8 f6 14 12 fe e9 ba 06 00 00 e8 ec 14 12 fe e9 4f 01 00 00 e8 e2 14 12 fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f RSP: 0018:ffffc900019be020 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000009 RCX: 0000000000100000 RDX: ffffc9000ead2000 RSI: 000000000000078e RDI: 0000000000000008 RBP: ffffc900019be830 R08: ffffffff838d428b R09: ffffffff838d99a7 R10: 0000000000000002 R11: ffff888000f2c880 R12: dffffc0000000000 R13: ffff888011b2ddf8 R14: 00000000000001c0 R15: 0000000000000000 FS: 00007fbf42be16c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 0000000040aba000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: e8 f6 14 12 fe call 0xfe1214fd 7: e9 ba 06 00 00 jmp 0x6c6 c: e8 ec 14 12 fe call 0xfe1214fd 11: e9 4f 01 00 00 jmp 0x165 16: e8 e2 14 12 fe call 0xfe1214fd 1b: 49 8d 7f 08 lea 0x8(%r15),%rdi 1f: 49 8d 5f 09 lea 0x9(%r15),%rbx 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 bd 23 00 00 jne 0x23f4 37: 48 89 d8 mov %rbx,%rax 3a: 48 c1 e8 03 shr $0x3,%rax 3e: 42 rex.X 3f: 0f .byte 0xf