loop0: detected capacity change from 0 to 32768
BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5109)
BTRFS info (device loop0): first mount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
BTRFS info (device loop0): using blake2b (blake2b-256-generic) checksum algorithm
BTRFS info (device loop0): using free-space-tree
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000041: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000208-0x000000000000020f]
CPU: 0 UID: 0 PID: 5109 Comm: syz.0.0 Not tainted 6.12.0-rc3-syzkaller-00420-g715ca9dd687f #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:btrfs_search_slot+0xc5/0x30d0 fs/btrfs/ctree.c:2013
Code: 08 43 c7 44 2c 10 04 f2 04 f3 e8 f6 ed e6 fd 48 89 5c 24 38 48 81 c3 08 02 00 00 48 89 d8 48 c1 e8 03 48 89 84 24 d0 00 00 00 <42> 80 3c 28 00 74 08 48 89 df e8 5c b2 50 fe 48 8b 03 48 89 84 24
RSP: 0018:ffffc90002dbf9e0 EFLAGS: 00010206
RAX: 0000000000000041 RBX: 0000000000000208 RCX: 0000000000040000
RDX: ffffc9000b829000 RSI: 00000000000003c5 RDI: 00000000000003c6
RBP: ffffc90002dbfbb0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1009a0d80e R12: 1ffff920005b7f58
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888041061bb0
FS:  00007fba591206c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba58525178 CR3: 0000000041302000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 extent_from_logical+0x1c8/0x880 fs/btrfs/backref.c:2216
 iterate_inodes_from_logical+0x13b/0x330 fs/btrfs/backref.c:2560
 btrfs_ioctl_logical_to_ino+0x133/0x2a0 fs/btrfs/ioctl.c:3489
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 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: 0033:0x7fba5837dff9
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:00007fba59120038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fba58535f80 RCX: 00007fba5837dff9
RDX: 0000000020000080 RSI: 00000000c0389424 RDI: 0000000000000004
RBP: 00007fba583f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fba58535f80 R15: 00007ffd67370798
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_search_slot+0xc5/0x30d0 fs/btrfs/ctree.c:2013
Code: 08 43 c7 44 2c 10 04 f2 04 f3 e8 f6 ed e6 fd 48 89 5c 24 38 48 81 c3 08 02 00 00 48 89 d8 48 c1 e8 03 48 89 84 24 d0 00 00 00 <42> 80 3c 28 00 74 08 48 89 df e8 5c b2 50 fe 48 8b 03 48 89 84 24
RSP: 0018:ffffc90002dbf9e0 EFLAGS: 00010206
RAX: 0000000000000041 RBX: 0000000000000208 RCX: 0000000000040000
RDX: ffffc9000b829000 RSI: 00000000000003c5 RDI: 00000000000003c6
RBP: ffffc90002dbfbb0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1009a0d80e R12: 1ffff920005b7f58
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888041061bb0
FS:  00007fba591206c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c0ad14058 CR3: 0000000041302000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	08 43 c7             	or     %al,-0x39(%rbx)
   3:	44 2c 10             	rex.R sub $0x10,%al
   6:	04 f2                	add    $0xf2,%al
   8:	04 f3                	add    $0xf3,%al
   a:	e8 f6 ed e6 fd       	call   0xfde6ee05
   f:	48 89 5c 24 38       	mov    %rbx,0x38(%rsp)
  14:	48 81 c3 08 02 00 00 	add    $0x208,%rbx
  1b:	48 89 d8             	mov    %rbx,%rax
  1e:	48 c1 e8 03          	shr    $0x3,%rax
  22:	48 89 84 24 d0 00 00 	mov    %rax,0xd0(%rsp)
  29:	00
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 5c b2 50 fe       	call   0xfe50b295
  39:	48 8b 03             	mov    (%rbx),%rax
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	84                   	.byte 0x84
  3f:	24                   	.byte 0x24