TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
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BUG: KASAN: use-after-free in list_replace include/linux/list.h:141 [inline]
BUG: KASAN: use-after-free in list_replace_init include/linux/list.h:149 [inline]
BUG: KASAN: use-after-free in padata_parallel_worker+0x2b0/0x2e0 kernel/padata.c:76
Write of size 8 at addr ffff8880b3d6d958 by task kworker/0:1/25

kernel BUG at include/linux/scatterlist.h:190!
CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 4.14.288-syzkaller #0
BUG: unable to handle kernel 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
paging request
Workqueue: pencrypt padata_parallel_worker
 at ffffffffffffffc8
IP: crypto_aead_encrypt include/crypto/aead.h:332 [inline]
IP: pcrypt_aead_enc+0x70/0xe0 crypto/pcrypt.c:143
Call Trace:
PGD 8e6b067 
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
P4D 8e6b067 
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
PUD 8e6d067 
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
PMD 0 
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_store8_noabort+0x68/0x70 mm/kasan/report.c:435
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
 list_replace include/linux/list.h:141 [inline]
 list_replace_init include/linux/list.h:149 [inline]
 padata_parallel_worker+0x2b0/0x2e0 kernel/padata.c:76
CPU: 1 PID: 9121 Comm: kworker/1:4 Not tainted 4.14.288-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Workqueue: pencrypt padata_parallel_worker
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
task: ffff88809d6fc180 task.stack: ffff88809bd18000
RIP: 0010:crypto_aead_encrypt include/crypto/aead.h:332 [inline]
RIP: 0010:pcrypt_aead_enc+0x70/0xe0 crypto/pcrypt.c:143
RSP: 0018:ffff88809bd1fcc8 EFLAGS: 00010246
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
 kthread+0x30d/0x420 kernel/kthread.c:232
RDX: 1ffffffffffffff9 RSI: 0000000000000003 RDI: ffff888096b4ba10
RBP: ffff888096b4b9d0 R08: ffffffff8b9c0998 R09: 0000000000000002
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
R10: 0000000000000000 R11: ffff88809d6fc180 R12: ffff888096b4ba10

R13: ffff88809bd1fd10 R14: ffff88809bd1fd10 R15: 1ffff110137a3f9e
Allocated by task 11519:
FS:  0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 __do_kmalloc mm/slab.c:3720 [inline]
 __kmalloc+0x15a/0x400 mm/slab.c:3729
CR2: ffffffffffffffc8 CR3: 00000000aad44000 CR4: 00000000003406e0
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 tls_push_record+0xfa/0x1270 net/tls/tls_sw.c:250
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 tls_sw_sendmsg+0xbb0/0xfd0 net/tls/tls_sw.c:457
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
Call Trace:
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 padata_parallel_worker+0x202/0x2e0 kernel/padata.c:87
 SYSC_sendto net/socket.c:1763 [inline]
 SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117

Freed by task 11519:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xc9/0x250 mm/slab.c:3815
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
 tls_push_record+0xc3b/0x1270 net/tls/tls_sw.c:293
 tls_sw_sendmsg+0xbb0/0xfd0 net/tls/tls_sw.c:457
 kthread+0x30d/0x420 kernel/kthread.c:232
 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
 SYSC_sendto net/socket.c:1763 [inline]
 SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
Code: 
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
c1 
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
ea 

03 
The buggy address belongs to the object at ffff8880b3d6d900
 which belongs to the cache kmalloc-256 of size 256
80 
The buggy address is located 88 bytes inside of
 256-byte region [ffff8880b3d6d900, ffff8880b3d6da00)
3c 
The buggy address belongs to the page:
02 
page:ffffea0002cf5b40 count:1 mapcount:0 mapping:ffff8880b3d6d040 index:0x0
00 
75 
flags: 0xfff00000000100(slab)
74 
raw: 00fff00000000100 ffff8880b3d6d040 0000000000000000 000000010000000c
48 
raw: ffffea0002cfc520 ffffea0002ce58a0 ffff88813fe747c0 0000000000000000
b8 
page dumped because: kasan: bad access detected
00 

00 
Memory state around the buggy address:
00 
 ffff8880b3d6d800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 
 ffff8880b3d6d880: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
00 
>ffff8880b3d6d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fc 
                                                    ^
ff 
 ffff8880b3d6d980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
df 
 ffff8880b3d6da00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
48 
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