Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 2 UID: 0 PID: 6261 Comm: syz.0.73 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:create_empty_buffers+0x4d/0x480 fs/buffer.c:1694
Code: ec 6d ff 48 89 de ba 40 8c 40 00 4c 89 ef e8 0a f6 ff ff 49 89 c6 48 89 c3 eb 03 48 89 c3 e8 ea eb 6d ff 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 81 03 00 00 48 8d 7b 08 4c 09 23 48 89 f8 48 c1
RSP: 0018:ffffc9000408f870 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8250f7ec
RDX: ffff88802a4d8000 RSI: ffffffff8250fcc6 RDI: ffff88802a4d9680
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88802a4d8b30 R12: 0000000000000000
R13: ffffea0000a9e5c0 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007f1ac84a46c0(0000) GS:ffff8880d6af5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ac84a3f98 CR3: 000000002b14f000 CR4: 0000000000352ef0
Call Trace:
<TASK>
folio_create_buffers+0x109/0x150 fs/buffer.c:1802
block_read_full_folio+0x14c/0x850 fs/buffer.c:2403
filemap_read_folio+0xc8/0x2a0 mm/filemap.c:2496
do_read_cache_folio+0x266/0x5c0 mm/filemap.c:4096
do_read_cache_page mm/filemap.c:4162 [inline]
read_cache_page_gfp+0x29/0x120 mm/filemap.c:4195
btrfs_read_disk_super+0x192/0x500 fs/btrfs/volumes.c:1367
btrfs_scan_one_device+0x109/0x820 fs/btrfs/volumes.c:1475
btrfs_get_tree_super fs/btrfs/super.c:1860 [inline]
btrfs_get_tree_subvol fs/btrfs/super.c:2089 [inline]
btrfs_get_tree+0x5b3/0x2710 fs/btrfs/super.c:2123
vfs_get_tree+0x8e/0x330 fs/super.c:1751
fc_mount fs/namespace.c:1199 [inline]
do_new_mount_fc fs/namespace.c:3636 [inline]
do_new_mount fs/namespace.c:3712 [inline]
path_mount+0x7bf/0x23a0 fs/namespace.c:4022
do_mount fs/namespace.c:4035 [inline]
__do_sys_mount fs/namespace.c:4224 [inline]
__se_sys_mount fs/namespace.c:4201 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:4201
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1ac758f7c9
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:00007f1ac84a4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f1ac77e6090 RCX: 00007f1ac758f7c9
RDX: 00002000000000c0 RSI: 0000200000000080 RDI: 00002000000001c0
RBP: 00007f1ac7613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004418 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1ac77e6128 R14: 00007f1ac77e6090 R15: 00007ffe5d1bb9d8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:create_empty_buffers+0x4d/0x480 fs/buffer.c:1694
Code: ec 6d ff 48 89 de ba 40 8c 40 00 4c 89 ef e8 0a f6 ff ff 49 89 c6 48 89 c3 eb 03 48 89 c3 e8 ea eb 6d ff 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 81 03 00 00 48 8d 7b 08 4c 09 23 48 89 f8 48 c1
RSP: 0018:ffffc9000408f870 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8250f7ec
RDX: ffff88802a4d8000 RSI: ffffffff8250fcc6 RDI: ffff88802a4d9680
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88802a4d8b30 R12: 0000000000000000
R13: ffffea0000a9e5c0 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007f1ac84a46c0(0000) GS:ffff8880d6af5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ac84a3f98 CR3: 000000002b14f000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
0: ec in (%dx),%al
1: 6d insl (%dx),%es:(%rdi)
2: ff 48 89 decl -0x77(%rax)
5: de ba 40 8c 40 00 fidivrs 0x408c40(%rdx)
b: 4c 89 ef mov %r13,%rdi
e: e8 0a f6 ff ff call 0xfffff61d
13: 49 89 c6 mov %rax,%r14
16: 48 89 c3 mov %rax,%rbx
19: eb 03 jmp 0x1e
1b: 48 89 c3 mov %rax,%rbx
1e: e8 ea eb 6d ff call 0xff6dec0d
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction
2e: 0f 85 81 03 00 00 jne 0x3b5
34: 48 8d 7b 08 lea 0x8(%rbx),%rdi
38: 4c 09 23 or %r12,(%rbx)
3b: 48 89 f8 mov %rdi,%rax
3e: 48 rex.W
3f: c1 .byte 0xc1