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.
=======================================================
(syz.0.0,5116,0):ocfs2_read_blocks:240 ERROR: status = -12
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 UID: 0 PID: 5116 Comm: syz.0.0 Not tainted 6.11.0-syzkaller-03917-ga940d9a43e62 #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_buffer_cached+0xcb/0x840 fs/ocfs2/uptodate.c:237
Code: 4b 8b 63 fe 4c 89 7c 24 20 4c 8b 5d 00 48 89 5c 24 08 48 89 df 41 ff d3 66 90 48 89 44 24 18 49 83 c5 18 4d 89 ec 49 c1 ec 03 <43> 80 3c 34 00 74 08 4c 89 ef e8 16 8b 63 fe 49 8b 55 00 48 8b 44
RSP: 0018:ffffc90002dfe620 EFLAGS: 00010206
RAX: 0000000000000042 RBX: ffff88801fed1670 RCX: dffffc0000000000
RDX: ffffc900032a2000 RSI: 00000000000283aa RDI: 00000000000283ab
RBP: ffffffff8c493900 R08: 0000000000000003 R09: fffff520005bfcb4
R10: dffffc0000000000 R11: ffffffff83889a90 R12: 0000000000000003
R13: 0000000000000018 R14: dffffc0000000000 R15: 1ffff11003fda2ce
FS: 00007f10953a86c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005616da7fc000 CR3: 0000000041aec000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
ocfs2_set_buffer_uptodate+0xa1/0x1350 fs/ocfs2/uptodate.c:474
ocfs2_read_blocks+0x103e/0x1620 fs/ocfs2/buffer_head_io.c:392
ocfs2_read_virt_blocks+0x4c8/0xa50 fs/ocfs2/extent_map.c:1010
ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline]
ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline]
ocfs2_find_entry+0x43b/0x2780 fs/ocfs2/dir.c:1080
ocfs2_find_files_on_disk+0xff/0x360 fs/ocfs2/dir.c:1981
ocfs2_lookup_ino_from_name+0xb1/0x1e0 fs/ocfs2/dir.c:2003
_ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline]
ocfs2_get_system_file_inode+0x305/0x7b0 fs/ocfs2/sysfile.c:112
ocfs2_init_global_system_inodes+0x32c/0x730 fs/ocfs2/super.c:457
ocfs2_initialize_super fs/ocfs2/super.c:2250 [inline]
ocfs2_fill_super+0x3068/0x5880 fs/ocfs2/super.c:994
mount_bdev+0x20a/0x2d0 fs/super.c:1679
legacy_get_tree+0xee/0x190 fs/fs_context.c:662
vfs_get_tree+0x90/0x2b0 fs/super.c:1800
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4055 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032
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: 0033:0x7f109457f69a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f10953a7e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f10953a7ef0 RCX: 00007f109457f69a
RDX: 0000000020004440 RSI: 0000000020000040 RDI: 00007f10953a7eb0
RBP: 0000000020004440 R08: 00007f10953a7ef0 R09: 00000000000008c0
R10: 00000000000008c0 R11: 0000000000000246 R12: 0000000020000040
R13: 00007f10953a7eb0 R14: 000000000000442e R15: 0000000020000100
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_buffer_cached+0xcb/0x840 fs/ocfs2/uptodate.c:237
Code: 4b 8b 63 fe 4c 89 7c 24 20 4c 8b 5d 00 48 89 5c 24 08 48 89 df 41 ff d3 66 90 48 89 44 24 18 49 83 c5 18 4d 89 ec 49 c1 ec 03 <43> 80 3c 34 00 74 08 4c 89 ef e8 16 8b 63 fe 49 8b 55 00 48 8b 44
RSP: 0018:ffffc90002dfe620 EFLAGS: 00010206
RAX: 0000000000000042 RBX: ffff88801fed1670 RCX: dffffc0000000000
RDX: ffffc900032a2000 RSI: 00000000000283aa RDI: 00000000000283ab
RBP: ffffffff8c493900 R08: 0000000000000003 R09: fffff520005bfcb4
R10: dffffc0000000000 R11: ffffffff83889a90 R12: 0000000000000003
R13: 0000000000000018 R14: dffffc0000000000 R15: 1ffff11003fda2ce
FS: 00007f10953a86c0(0000) GS:ffff88801fe00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005616da7fc000 CR3: 0000000041aec000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 4b 8b 63 fe rex.WXB mov -0x2(%r11),%rsp
4: 4c 89 7c 24 20 mov %r15,0x20(%rsp)
9: 4c 8b 5d 00 mov 0x0(%rbp),%r11
d: 48 89 5c 24 08 mov %rbx,0x8(%rsp)
12: 48 89 df mov %rbx,%rdi
15: 41 ff d3 call *%r11
18: 66 90 xchg %ax,%ax
1a: 48 89 44 24 18 mov %rax,0x18(%rsp)
1f: 49 83 c5 18 add $0x18,%r13
23: 4d 89 ec mov %r13,%r12
26: 49 c1 ec 03 shr $0x3,%r12
* 2a: 43 80 3c 34 00 cmpb $0x0,(%r12,%r14,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 ef mov %r13,%rdi
34: e8 16 8b 63 fe call 0xfe638b4f
39: 49 8b 55 00 mov 0x0(%r13),%rdx
3d: 48 rex.W
3e: 8b .byte 0x8b
3f: 44 rex.R