general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]
CPU: 0 PID: 22998 Comm: syz-executor.2 Not tainted 6.1.0-rc4-syzkaller-00962-g2cf7e87fc459 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:udpv6_sendmsg+0xe7a/0x2c70 net/ipv6/udp.c:1433
Code: ff ff ff 48 83 c0 08 48 89 85 68 fd ff ff 48 8b 85 c0 fd ff ff 48 8d 78 4e 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d0 1b 00 00
RSP: 0018:ffffc90014fef8e8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 000000000000001c RCX: 0000000000000000
RDX: 0000000000000009 RSI: ffffffff88223df4 RDI: 000000000000004e
RBP: ffffc90014fefb88 R08: 0000000000000003 R09: 0000000000000000
R10: 000000000000234e R11: 0000000000000000 R12: ffff888044b56cc0
R13: 000000000000234e R14: ffff888044b56cd2 R15: ffffc90014fefc18
FS:  0000555557528400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e621000 CR3: 0000000020c9e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_udp_sendmsg net/rxrpc/output.c:27 [inline]
 do_udp_sendmsg net/rxrpc/output.c:21 [inline]
 rxrpc_send_abort_packet+0x73b/0x860 net/rxrpc/output.c:367
 rxrpc_release_calls_on_socket+0x211/0x300 net/rxrpc/call_object.c:595
 rxrpc_release_sock net/rxrpc/af_rxrpc.c:886 [inline]
 rxrpc_release+0x263/0x5a0 net/rxrpc/af_rxrpc.c:917
 __sock_release+0xcd/0x280 net/socket.c:650
 sock_close+0x18/0x20 net/socket.c:1365
 __fput+0x27c/0xa90 fs/file_table.c:320
 task_work_run+0x16b/0x270 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f675303d40b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffebf939430 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f675303d40b
RDX: 00007f6752c00670 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f67531ad980 R08: 0000000000000000 R09: 00007f6752c00000
R10: 00007f6752c00678 R11: 0000000000000293 R12: 000000000023b78e
R13: 00007ffebf939530 R14: 00007f67531abf80 R15: 0000000000000032
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:udpv6_sendmsg+0xe7a/0x2c70 net/ipv6/udp.c:1433
Code: ff ff ff 48 83 c0 08 48 89 85 68 fd ff ff 48 8b 85 c0 fd ff ff 48 8d 78 4e 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d0 1b 00 00
RSP: 0018:ffffc90014fef8e8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 000000000000001c RCX: 0000000000000000
RDX: 0000000000000009 RSI: ffffffff88223df4 RDI: 000000000000004e
RBP: ffffc90014fefb88 R08: 0000000000000003 R09: 0000000000000000
R10: 000000000000234e R11: 0000000000000000 R12: ffff888044b56cc0
R13: 000000000000234e R14: ffff888044b56cd2 R15: ffffc90014fefc18
FS:  0000555557528400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb560b82058 CR3: 0000000020c9e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	ff 48 83             	decl   -0x7d(%rax)
   3:	c0 08 48             	rorb   $0x48,(%rax)
   6:	89 85 68 fd ff ff    	mov    %eax,-0x298(%rbp)
   c:	48 8b 85 c0 fd ff ff 	mov    -0x240(%rbp),%rax
  13:	48 8d 78 4e          	lea    0x4e(%rax),%rdi
  17:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1e:	fc ff df
  21:	48 89 fa             	mov    %rdi,%rdx
  24:	48 c1 ea 03          	shr    $0x3,%rdx
* 28:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2c:	48 89 fa             	mov    %rdi,%rdx
  2f:	83 e2 07             	and    $0x7,%edx
  32:	38 d0                	cmp    %dl,%al
  34:	7f 08                	jg     0x3e
  36:	84 c0                	test   %al,%al
  38:	0f 85 d0 1b 00 00    	jne    0x1c0e