Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 669 Comm: syz.0.7391 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rose_transmit_link+0x32/0x740
Code: 56 41 55 41 54 53 48 83 ec 18 48 89 f5 49 89 fc 49 be 00 00 00 00 00 fc ff df e8 79 b6 52 f7 4c 8d 7d 32 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 6e 05 00 00 41 0f b6 1f 31 ff 89 de e8
RSP: 0018:ffffc900085d7710 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffff888122a1d640
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88811374d380
RBP: 0000000000000000 R08: ffff888122a1d640 R09: 0000000000000008
R10: 000000000000000f R11: 0000000000000000 R12: ffff88811374d380
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000032
FS:  00007ffa9f9ff6c0(0000) GS:ffff8881a3c1a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7ff6f98440 CR3: 0000000126fbc000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 rose_write_internal+0x11dc/0x1ac0
 rose_release+0x24e/0x520
 sock_close+0xc3/0x240
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 ret_from_fork+0x47f/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rose_transmit_link+0x32/0x740
Code: 56 41 55 41 54 53 48 83 ec 18 48 89 f5 49 89 fc 49 be 00 00 00 00 00 fc ff df e8 79 b6 52 f7 4c 8d 7d 32 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 6e 05 00 00 41 0f b6 1f 31 ff 89 de e8
RSP: 0018:ffffc900085d7710 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffff888122a1d640
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88811374d380
RBP: 0000000000000000 R08: ffff888122a1d640 R09: 0000000000000008
R10: 000000000000000f R11: 0000000000000000 R12: ffff88811374d380
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000032
FS:  00007ffa9f9ff6c0(0000) GS:ffff8881a3c1a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055990aa447e8 CR3: 000000000df36000 CR4: 00000000000006f0
