general protection fault, probably for non-canonical address 0xdffffc0004000030: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000020000180-0x0000000020000187]
CPU: 0 PID: 65833 Comm: syz-executor.6 Not tainted 6.3.0-rc3-next-20230327 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:do_iter_write+0x477/0x700
Code: 00 0f 85 fd 01 00 00 4d 8b 7c 24 28 e8 d2 05 c6 ff 48 8b 44 24 18 80 38 00 0f 85 68 01 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3b 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00
RSP: 0018:ffff8880343d7c70 EFLAGS: 00010216
RAX: 0000000020000180 RBX: ffff8880343d7d60 RCX: ffffc9000f642000
RDX: 0000000004000030 RSI: ffffffff8185830e RDI: 0000000000000007
RBP: 0000000000000007 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000001 R12: ffff888015afac80
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84a769c0
FS:  00007f11b910a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200011c0 CR3: 000000000d9a0000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 vfs_writev+0x1ae/0x660
 __x64_sys_pwritev+0x233/0x310
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f11bbb94b19
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:00007f11b910a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000128
RAX: ffffffffffffffda RBX: 00007f11bbca7f60 RCX: 00007f11bbb94b19
RDX: 0000000000000001 RSI: 00000000200011c0 RDI: 0000000000000003
RBP: 00007f11bbbeef6d R08: 000000000000007f R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc26eceebf R14: 00007f11b910a300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_iter_write+0x477/0x700
Code: 00 0f 85 fd 01 00 00 4d 8b 7c 24 28 e8 d2 05 c6 ff 48 8b 44 24 18 80 38 00 0f 85 68 01 00 00 48 8b 43 18 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3b 01 00 00 48 8b 4c 24 20 48 8b 30 80 39 00
RSP: 0018:ffff8880343d7c70 EFLAGS: 00010216
RAX: 0000000020000180 RBX: ffff8880343d7d60 RCX: ffffc9000f642000
RDX: 0000000004000030 RSI: ffffffff8185830e RDI: 0000000000000007
RBP: 0000000000000007 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000001 R12: ffff888015afac80
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff84a769c0
FS:  00007f11b910a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200011c0 CR3: 000000000d9a0000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	00 0f                	add    %cl,(%rdi)
   2:	85 fd                	test   %edi,%ebp
   4:	01 00                	add    %eax,(%rax)
   6:	00 4d 8b             	add    %cl,-0x75(%rbp)
   9:	7c 24                	jl     0x2f
   b:	28 e8                	sub    %ch,%al
   d:	d2 05 c6 ff 48 8b    	rolb   %cl,-0x74b7003a(%rip)        # 0x8b48ffd9
  13:	44 24 18             	rex.R and $0x18,%al
  16:	80 38 00             	cmpb   $0x0,(%rax)
  19:	0f 85 68 01 00 00    	jne    0x187
  1f:	48 8b 43 18          	mov    0x18(%rbx),%rax
  23:	48 89 c2             	mov    %rax,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	42 80 3c 32 00       	cmpb   $0x0,(%rdx,%r14,1) <-- trapping instruction
  2f:	0f 85 3b 01 00 00    	jne    0x170
  35:	48 8b 4c 24 20       	mov    0x20(%rsp),%rcx
  3a:	48 8b 30             	mov    (%rax),%rsi
  3d:	80 39 00             	cmpb   $0x0,(%rcx)