RSP: 002b:00007f77b45af028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f77b49f7090 RCX: 00007f77b476ee99
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000200000000080
RBP: 00007f77b45af090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f77b49f7128 R14: 00007f77b49f7090 R15: 00007ffcff5b9368
general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 1 PID: 413 Comm: syz.2.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:933 [inline]
RIP: 0010:fuse_file_put+0x141/0x1700 fs/fuse/file.c:125
Code: c1 6b 28 bf 01 00 00 00 44 89 ee e8 39 56 75 ff 41 83 fd 01 0f 85 48 01 00 00 48 8b 44 24 28 4c 8d 68 28 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 4c 89 f9 74 12 4c 89 ef e8 7d c7 af ff 48 b9 00 00
RSP: 0018:ffffc90000ff7020 EFLAGS: 00010206
RAX: 0000000000000005 RBX: ffff888110ef5600 RCX: 0000000000000000
RDX: ffff888110c3cf00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000ff7380 R08: ffff888110ef562b R09: 1ffff110221deac5
R10: dffffc0000000000 R11: ffffed10221deac6 R12: ffff888110ef5628
R13: 0000000000000028 R14: fffff520001fee10 R15: dffffc0000000000
FS:  00007f77b45af6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77b47bc580 CR3: 000000011116b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fuse_sync_release+0x84/0xb0 fs/fuse/file.c:405
 fuse_create_open fs/fuse/dir.c:801 [inline]
 fuse_atomic_open+0x129b/0x2200 fs/fuse/dir.c:862
 atomic_open fs/namei.c:3122 [inline]
 lookup_open fs/namei.c:3227 [inline]
 open_last_lookups fs/namei.c:3325 [inline]
 path_openat+0x12ca/0x3040 fs/namei.c:3514
 do_filp_open+0x1df/0x400 fs/namei.c:3544
 do_sys_openat2+0x19f/0x750 fs/open.c:1219
 do_sys_open fs/open.c:1235 [inline]
 __do_sys_creat fs/open.c:1311 [inline]
 __se_sys_creat fs/open.c:1305 [inline]
 __x64_sys_creat+0x8e/0xb0 fs/open.c:1305
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f77b476ee99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f77b45af028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f77b49f7090 RCX: 00007f77b476ee99
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000200000000080
RBP: 00007f77b45af090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f77b49f7128 R14: 00007f77b49f7090 R15: 00007ffcff5b9368
Modules linked in:
---[ end trace da8a70f68569a5f6 ]---
RIP: 0010:get_fuse_mount fs/fuse/fuse_i.h:933 [inline]
RIP: 0010:fuse_file_put+0x141/0x1700 fs/fuse/file.c:125
Code: c1 6b 28 bf 01 00 00 00 44 89 ee e8 39 56 75 ff 41 83 fd 01 0f 85 48 01 00 00 48 8b 44 24 28 4c 8d 68 28 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 4c 89 f9 74 12 4c 89 ef e8 7d c7 af ff 48 b9 00 00
RSP: 0018:ffffc90000ff7020 EFLAGS: 00010206
RAX: 0000000000000005 RBX: ffff888110ef5600 RCX: 0000000000000000
RDX: ffff888110c3cf00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000ff7380 R08: ffff888110ef562b R09: 1ffff110221deac5
R10: dffffc0000000000 R11: ffffed10221deac6 R12: ffff888110ef5628
R13: 0000000000000028 R14: fffff520001fee10 R15: dffffc0000000000
FS:  00007f77b45af6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f77b45aeff8 CR3: 000000011116b000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c1 6b 28 bf          	shrl   $0xbf,0x28(%rbx)
   4:	01 00                	add    %eax,(%rax)
   6:	00 00                	add    %al,(%rax)
   8:	44 89 ee             	mov    %r13d,%esi
   b:	e8 39 56 75 ff       	call   0xff755649
  10:	41 83 fd 01          	cmp    $0x1,%r13d
  14:	0f 85 48 01 00 00    	jne    0x162
  1a:	48 8b 44 24 28       	mov    0x28(%rsp),%rax
  1f:	4c 8d 68 28          	lea    0x28(%rax),%r13
  23:	4c 89 e8             	mov    %r13,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	4c 89 f9             	mov    %r15,%rcx
  32:	74 12                	je     0x46
  34:	4c 89 ef             	mov    %r13,%rdi
  37:	e8 7d c7 af ff       	call   0xffafc7b9
  3c:	48                   	rex.W
  3d:	b9                   	.byte 0xb9