BTRFS info (device loop4): enabling ssd optimizations
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 8283 Comm: syz.4.605 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:btrfs_root_node+0x57/0x370 fs/btrfs/ctree.c:132
Code: 5b 09 fe e8 0b 7a 01 00 e8 96 c5 dc 06 89 c3 31 ff 89 c6 e8 7b f9 1d fe 85 db 74 17 e8 02 aa 08 fe 84 c0 74 1c e8 09 f6 1d fe <43> 80 3c 37 00 75 4b eb 51 e8 fb f5 1d fe 43 80 3c 37 00 75 3d eb
RSP: 0018:ffffc90003d4f4e8 EFLAGS: 00010287
RAX: ffffffff83628f87 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc900054e9000 RSI: 000000000005ab23 RDI: 000000000005ab24
RBP: 0000000000000020 R08: ffffffff83628f75 R09: fffffbfff2131821
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000004
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fb06851f6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ce6c3c8008 CR3: 000000006863e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_read_lock_root_node+0x7b/0x3b0 fs/btrfs/locking.c:276
 btrfs_build_ref_tree+0x13b/0x1600 fs/btrfs/ref-verify.c:993
 open_ctree+0x2c7b/0x3500 fs/btrfs/disk-io.c:3609
 btrfs_fill_super+0x1c7/0x2d0 fs/btrfs/super.c:1387
 btrfs_mount_root+0x803/0x930 fs/btrfs/super.c:1752
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 fc_mount fs/namespace.c:1000 [inline]
 vfs_kern_mount+0xb8/0x150 fs/namespace.c:1030
 btrfs_mount+0x395/0xb40 fs/btrfs/super.c:1812
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012
 do_mount fs/namespace.c:3355 [inline]
 __do_sys_mount fs/namespace.c:3563 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb06a6b758a
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:00007fb06851ee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb06851eef0 RCX: 00007fb06a6b758a
RDX: 0000400000000080 RSI: 0000400000000040 RDI: 00007fb06851eeb0
RBP: 0000400000000080 R08: 00007fb06851eef0 R09: 000000000001c005
R10: 000000000001c005 R11: 0000000000000246 R12: 0000400000000040
R13: 00007fb06851eeb0 R14: 00000000000055cb R15: 0000400000000140
 </TASK>
Modules linked in:
---[ end trace 6891ee9932ccb66d ]---
RIP: 0010:btrfs_root_node+0x57/0x370 fs/btrfs/ctree.c:132
Code: 5b 09 fe e8 0b 7a 01 00 e8 96 c5 dc 06 89 c3 31 ff 89 c6 e8 7b f9 1d fe 85 db 74 17 e8 02 aa 08 fe 84 c0 74 1c e8 09 f6 1d fe <43> 80 3c 37 00 75 4b eb 51 e8 fb f5 1d fe 43 80 3c 37 00 75 3d eb
RSP: 0018:ffffc90003d4f4e8 EFLAGS: 00010287
RAX: ffffffff83628f87 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc900054e9000 RSI: 000000000005ab23 RDI: 000000000005ab24
RBP: 0000000000000020 R08: ffffffff83628f75 R09: fffffbfff2131821
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000004
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fb06851f6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb832990321 CR3: 000000006863e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	5b                   	pop    %rbx
   1:	09 fe                	or     %edi,%esi
   3:	e8 0b 7a 01 00       	call   0x17a13
   8:	e8 96 c5 dc 06       	call   0x6dcc5a3
   d:	89 c3                	mov    %eax,%ebx
   f:	31 ff                	xor    %edi,%edi
  11:	89 c6                	mov    %eax,%esi
  13:	e8 7b f9 1d fe       	call   0xfe1df993
  18:	85 db                	test   %ebx,%ebx
  1a:	74 17                	je     0x33
  1c:	e8 02 aa 08 fe       	call   0xfe08aa23
  21:	84 c0                	test   %al,%al
  23:	74 1c                	je     0x41
  25:	e8 09 f6 1d fe       	call   0xfe1df633
* 2a:	43 80 3c 37 00       	cmpb   $0x0,(%r15,%r14,1) <-- trapping instruction
  2f:	75 4b                	jne    0x7c
  31:	eb 51                	jmp    0x84
  33:	e8 fb f5 1d fe       	call   0xfe1df633
  38:	43 80 3c 37 00       	cmpb   $0x0,(%r15,%r14,1)
  3d:	75 3d                	jne    0x7c
  3f:	eb                   	.byte 0xeb