IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. ================================================================== BUG: unable to handle kernel paging request 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+0x37a/0x420 kernel/padata.c:76 Write of size 8 at addr ffff88808af0f4d8 by task kworker/0:3/6863 at ffffffffffffffc8 IP: crypto_aead_encrypt include/crypto/aead.h:330 [inline] IP: pcrypt_aead_enc+0x7b/0xf0 crypto/pcrypt.c:142 CPU: 0 PID: 6863 Comm: kworker/0:3 Not tainted 4.14.173-syzkaller #0 PGD 786d067 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 P4D 786d067 Workqueue: pencrypt padata_parallel_worker PUD 786f067 PMD 0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xf7/0x13b lib/dump_stack.c:58 Oops: 0000 [#1] PREEMPT SMP KASAN Modules linked in: print_address_description.cold.7+0x9/0x1c9 mm/kasan/report.c:252 CPU: 1 PID: 2546 Comm: kworker/1:2 Not tainted 4.14.173-syzkaller #0 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report.cold.8+0x11a/0x2d3 mm/kasan/report.c:409 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:435 Workqueue: pencrypt padata_parallel_worker list_replace include/linux/list.h:141 [inline] list_replace_init include/linux/list.h:149 [inline] padata_parallel_worker+0x37a/0x420 kernel/padata.c:76 task: ffff8880a04f06c0 task.stack: ffff8880a04f8000 process_one_work+0x79e/0x16c0 kernel/workqueue.c:2114 RIP: 0010:crypto_aead_encrypt include/crypto/aead.h:330 [inline] RIP: 0010:pcrypt_aead_enc+0x7b/0xf0 crypto/pcrypt.c:142 RSP: 0018:ffff8880a04ffc90 EFLAGS: 00010246 worker_thread+0xcc/0xee0 kernel/workqueue.c:2248 kthread+0x338/0x400 kernel/kthread.c:232 RAX: dffffc0000000000 RBX: ffff88808a39f310 RCX: ffffffff82b08cfe RDX: 1ffffffffffffff9 RSI: 0000000000000008 RDI: ffff88808a39f348 RBP: ffff8880a04ffcb0 R08: 0000000000000001 R09: 0000000000000000 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 R10: 0000000000000050 R11: ffff8880a04f06c0 R12: 0000000000000000 R13: ffff88808a39f348 R14: ffff8880a04ffcf8 R15: 1ffff1101409ff9b FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 Allocated by task 6889: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 CR2: ffffffffffffffc8 CR3: 0000000079637000 CR4: 00000000001406e0 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:551 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x15b/0x7b0 mm/slab.c:3729 Call Trace: kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] tls_push_record+0xf6/0x14c0 net/tls/tls_sw.c:250 padata_parallel_worker+0x24e/0x420 kernel/padata.c:87 tls_sw_sendmsg+0x90b/0x10a0 net/tls/tls_sw.c:457 inet_sendmsg+0x108/0x440 net/ipv4/af_inet.c:762 process_one_work+0x79e/0x16c0 kernel/workqueue.c:2114 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:656 SYSC_sendto+0x1e3/0x2c0 net/socket.c:1763 worker_thread+0xcc/0xee0 kernel/workqueue.c:2248 SyS_sendto+0x9/0x10 net/socket.c:1731 kthread+0x338/0x400 kernel/kthread.c:232 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Freed by task 6889: Code: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 00 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524 0f __cache_free mm/slab.c:3496 [inline] kfree+0xcc/0x270 mm/slab.c:3815 85 tls_push_record+0xd32/0x14c0 net/tls/tls_sw.c:293 82 tls_sw_sendmsg+0x90b/0x10a0 net/tls/tls_sw.c:457 00 inet_sendmsg+0x108/0x440 net/ipv4/af_inet.c:762 00 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:656 00 SYSC_sendto+0x1e3/0x2c0 net/socket.c:1763 48 SyS_sendto+0x9/0x10 net/socket.c:1731 b8 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 00 entry_SYSCALL_64_after_hwframe+0x42/0xb7 00 00 The buggy address belongs to the object at ffff88808af0f480 which belongs to the cache kmalloc-256 of size 256 00 The buggy address is located 88 bytes inside of 256-byte region [ffff88808af0f480, ffff88808af0f580) 00 The buggy address belongs to the page: fc page:ffffea00022bc3c0 count:1 mapcount:0 mapping:ffff88808af0f0c0 index:0x0 ff df flags: 0x1fffc0000000100(slab) 4d raw: 01fffc0000000100 ffff88808af0f0c0 0000000000000000 000000010000000c 8b raw: ffffea00022d79e0 ffffea00022d5920 ffff8880aa8007c0 0000000000000000 64 page dumped because: kasan: bad access detected 24 38 Memory state around the buggy address: 49 ffff88808af0f380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb 8d ffff88808af0f400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 7c >ffff88808af0f480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb 24 ^ c8 ffff88808af0f500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb 48 ffff88808af0f580: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb 89 ================================================================== fa