general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 1434 Comm: syz-executor.2 Not tainted 5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_fuse_conn_super fs/fuse/fuse_i.h:844 [inline]
RIP: 0010:fuse_test_super+0x63/0x90 fs/fuse/inode.c:1633
Code: 4c 8b 23 49 81 c6 78 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 17 a8 fa fe 49 8b 1e 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 fe a7 fa fe 31 c0 4c 3b 23 0f 94
RSP: 0018:ffffc90005eb7be0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000dce3000 RSI: 0000000000001760 RDI: 0000000000001761
RBP: ffffffff8cc86e80 R08: dffffc0000000000 R09: 0000000000000003
R10: fffff52000bd6f71 R11: 0000000000000004 R12: ffff888092747000
R13: ffff88801f0fb498 R14: ffff88807daf6678 R15: dffffc0000000000
FS:  00007ff55b0af700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200037c0 CR3: 0000000091d8d000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sget_fc+0x158/0x660 fs/super.c:525
 fuse_get_tree+0x1b2/0x310 fs/fuse/inode.c:1664
 vfs_get_tree+0x86/0x270 fs/super.c:1498
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x1986/0x2c30 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount+0x308/0x3c0 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff55db59739
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff55b0af188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff55dc5e038 RCX: 00007ff55db59739
RDX: 0000000020002100 RSI: 0000000020000240 RDI: 0000000000000000
RBP: 00007ff55dbb3cc4 R08: 0000000020004140 R09: 0000000000000000
R10: 0000000000000d00 R11: 0000000000000246 R12: 00007ff55dc5e038
R13: 00007ffe9134a04f R14: 00007ff55b0af300 R15: 0000000000022000
Modules linked in:
---[ end trace 9492690f4abcea88 ]---
RIP: 0010:get_fuse_conn_super fs/fuse/fuse_i.h:844 [inline]
RIP: 0010:fuse_test_super+0x63/0x90 fs/fuse/inode.c:1633
Code: 4c 8b 23 49 81 c6 78 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 17 a8 fa fe 49 8b 1e 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 fe a7 fa fe 31 c0 4c 3b 23 0f 94
RSP: 0018:ffffc90005eb7be0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000dce3000 RSI: 0000000000001760 RDI: 0000000000001761
RBP: ffffffff8cc86e80 R08: dffffc0000000000 R09: 0000000000000003
R10: fffff52000bd6f71 R11: 0000000000000004 R12: ffff888092747000
R13: ffff88801f0fb498 R14: ffff88807daf6678 R15: dffffc0000000000
FS:  00007ff55b0af700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200037c0 CR3: 0000000091d8d000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 8b 23             	mov    (%rbx),%r12
   3:	49 81 c6 78 06 00 00 	add    $0x678,%r14
   a:	4c 89 f0             	mov    %r14,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  16:	74 08                	je     0x20
  18:	4c 89 f7             	mov    %r14,%rdi
  1b:	e8 17 a8 fa fe       	callq  0xfefaa837
  20:	49 8b 1e             	mov    (%r14),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 fe a7 fa fe       	callq  0xfefaa837
  39:	31 c0                	xor    %eax,%eax
  3b:	4c 3b 23             	cmp    (%rbx),%r12
  3e:	0f                   	.byte 0xf
  3f:	94                   	xchg   %eax,%esp