general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 3435 Comm: syz-executor.0 Not tainted 6.4.0-rc7-syzkaller-01944-g3674fbf0451d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:rose_transmit_link+0x32/0x5e0 net/rose/rose_link.c:266
Code: 41 55 41 54 49 89 fc 55 48 89 f5 53 48 83 ec 08 e8 c3 dc 75 f8 48 8d 7d 32 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 ce 04 00 00
RSP: 0018:ffffc90005d27a48 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880368af35a RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff890e6c9d RDI: 0000000000000032
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f
R10: 0000000000000013 R11: 0000000000094001 R12: ffff88802efaf140
R13: 0000000000000010 R14: 0000000000000013 R15: 0000000000000004
FS:  00007fc756c68700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7fef5831b8 CR3: 00000000760b1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rose_write_internal+0x301/0x1810 net/rose/rose_subr.c:198
 rose_release+0x1be/0x570 net/rose/af_rose.c:645
 __sock_release+0xcd/0x290 net/socket.c:653
 sock_close+0x1c/0x20 net/socket.c:1385
 __fput+0x27c/0xa90 fs/file_table.c:321
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 get_signal+0x1c7/0x25b0 kernel/signal.c:2652
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc755e8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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:00007fc756c68168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: 0000000000000000 RBX: 00007fc755fac050 RCX: 00007fc755e8c389
RDX: 0000000000000040 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007fc755ed7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd9b8c9b5f R14: 00007fc756c68300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rose_transmit_link+0x32/0x5e0 net/rose/rose_link.c:266
Code: 41 55 41 54 49 89 fc 55 48 89 f5 53 48 83 ec 08 e8 c3 dc 75 f8 48 8d 7d 32 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 ce 04 00 00
RSP: 0018:ffffc90005d27a48 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880368af35a RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff890e6c9d RDI: 0000000000000032
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f
R10: 0000000000000013 R11: 0000000000094001 R12: ffff88802efaf140
R13: 0000000000000010 R14: 0000000000000013 R15: 0000000000000004
FS:  00007fc756c68700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe4b2986058 CR3: 00000000760b1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	41 55                	push   %r13
   2:	41 54                	push   %r12
   4:	49 89 fc             	mov    %rdi,%r12
   7:	55                   	push   %rbp
   8:	48 89 f5             	mov    %rsi,%rbp
   b:	53                   	push   %rbx
   c:	48 83 ec 08          	sub    $0x8,%rsp
  10:	e8 c3 dc 75 f8       	callq  0xf875dcd8
  15:	48 8d 7d 32          	lea    0x32(%rbp),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	48 89 fa             	mov    %rdi,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 08                	jg     0x40
  38:	84 c0                	test   %al,%al
  3a:	0f 85 ce 04 00 00    	jne    0x50e