general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 9701 Comm: syz-executor.2 Not tainted 5.17.0-next-20220328-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dma_fence_array_first+0x78/0xb0 drivers/dma-buf/dma-fence-array.c:234
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 43 48 8b 9b 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 1b 4c 8b 23 e8 fa a9 e0 fc 4c 89 e0 5b 41 5c c3 45
RSP: 0018:ffffc9000332fd48 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffc90005102000
RDX: 0000000000000002 RSI: ffffffff84980052 RDI: ffff88807452a188
RBP: ffff88807452a100 R08: 0000000000000000 R09: ffff88807452a13b
R10: ffffffff8498fad9 R11: 0000000000000000 R12: ffff88807452a100
R13: ffff88807452ae90 R14: 00000000c0303e03 R15: 0000000000000012
FS:  00007f158f71e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62cd39c028 CR3: 00000000426db000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000003cd7 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __dma_fence_unwrap_array include/linux/dma-fence-unwrap.h:42 [inline]
 dma_fence_unwrap_first include/linux/dma-fence-unwrap.h:57 [inline]
 sync_file_merge drivers/dma-buf/sync_file.c:210 [inline]
 sync_file_ioctl_merge drivers/dma-buf/sync_file.c:349 [inline]
 sync_file_ioctl+0x667/0x22c0 drivers/dma-buf/sync_file.c:474
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f158e689049
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f158f71e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f158e79bf60 RCX: 00007f158e689049
RDX: 0000000020000100 RSI: 00000000c0303e03 RDI: 000000000000000b
RBP: 00007f158e6e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0bb8a4ff R14: 00007f158f71e300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dma_fence_array_first+0x78/0xb0 drivers/dma-buf/dma-fence-array.c:234
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 43 48 8b 9b 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 1b 4c 8b 23 e8 fa a9 e0 fc 4c 89 e0 5b 41 5c c3 45
RSP: 0018:ffffc9000332fd48 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffc90005102000
RDX: 0000000000000002 RSI: ffffffff84980052 RDI: ffff88807452a188
RBP: ffff88807452a100 R08: 0000000000000000 R09: ffff88807452a13b
R10: ffffffff8498fad9 R11: 0000000000000000 R12: ffff88807452a100
R13: ffff88807452ae90 R14: 00000000c0303e03 R15: 0000000000000012
FS:  00007f158f71e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f338f01c718 CR3: 00000000426db000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000003cd7 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	fa                   	cli
   4:	48 c1 ea 03          	shr    $0x3,%rdx
   8:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   c:	75 43                	jne    0x51
   e:	48 8b 9b 88 00 00 00 	mov    0x88(%rbx),%rbx
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 89 da             	mov    %rbx,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
* 26:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2a:	75 1b                	jne    0x47
  2c:	4c 8b 23             	mov    (%rbx),%r12
  2f:	e8 fa a9 e0 fc       	callq  0xfce0aa2e
  34:	4c 89 e0             	mov    %r12,%rax
  37:	5b                   	pop    %rbx
  38:	41 5c                	pop    %r12
  3a:	c3                   	retq
  3b:	45                   	rex.RB