[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.945218][ T27] audit: type=1800 audit(1578436458.743:25): pid=9484 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.965222][ T27] audit: type=1800 audit(1578436458.753:26): pid=9484 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.007272][ T27] audit: type=1800 audit(1578436458.753:27): pid=9484 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.942555][ T9637] kasan: CONFIG_KASAN_INLINE enabled [ 77.948086][ T9637] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 77.956141][ T9637] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 77.963143][ T9637] CPU: 1 PID: 9637 Comm: syz-executor549 Not tainted 5.5.0-rc5-syzkaller #0 [ 77.971831][ T9637] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.981921][ T9637] RIP: 0010:hash_mac4_uadt+0x1bc/0x470 [ 77.987411][ T9637] Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 5c 02 00 00 4c 89 f2 8b 48 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1a [ 78.008315][ T9637] RSP: 0018:ffffc90001e371b0 EFLAGS: 00010246 [ 78.014360][ T9637] RAX: dffffc0000000000 RBX: ffffc90001e37320 RCX: 0000000008000000 [ 78.022310][ T9637] RDX: 0000000000000000 RSI: ffffffff867f8cd5 RDI: ffff88808ef7d904 [ 78.030261][ T9637] RBP: ffffc90001e372b8 R08: 0000000000000000 R09: 0000000000000000 [ 78.038228][ T9637] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffff8880a8144500 [ 78.046177][ T9637] R13: 1ffff920003c6e3a R14: 0000000000000000 R15: ffffc90001e37200 [ 78.054648][ T9637] FS: 0000000001121880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 78.063554][ T9637] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.070117][ T9637] CR2: 0000000020000f98 CR3: 00000000a49d8000 CR4: 00000000001406e0 [ 78.078082][ T9637] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.086046][ T9637] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.094008][ T9637] Call Trace: [ 78.097527][ T9637] ? hash_mac_create+0x860/0x860 [ 78.102456][ T9637] ? hash_mac4_kadt+0x510/0x510 [ 78.107338][ T9637] ? nla_memcpy+0xb0/0xb0 [ 78.111663][ T9637] ? lock_acquire+0x190/0x410 [ 78.116318][ T9637] ? __kasan_check_read+0x11/0x20 [ 78.121362][ T9637] ip_set_utest+0x55b/0x890 [ 78.125842][ T9637] ? ip_set_put_byindex+0x490/0x490 [ 78.131022][ T9637] ? __mutex_lock+0x458/0x13c0 [ 78.135801][ T9637] ? ip_set_put_byindex+0x490/0x490 [ 78.140988][ T9637] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 78.145993][ T9637] ? nfnetlink_bind+0x2c0/0x2c0 [ 78.150826][ T9637] ? __kasan_check_read+0x11/0x20 [ 78.155829][ T9637] ? __lock_acquire+0x8a0/0x4a00 [ 78.162409][ T9637] ? save_stack+0x5c/0x90 [ 78.166734][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.172948][ T9637] ? apparmor_capable+0x497/0x900 [ 78.177967][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.184182][ T9637] ? __kasan_check_read+0x11/0x20 [ 78.189198][ T9637] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 78.194636][ T9637] netlink_rcv_skb+0x177/0x450 [ 78.199378][ T9637] ? nfnetlink_bind+0x2c0/0x2c0 [ 78.204292][ T9637] ? netlink_ack+0xb50/0xb50 [ 78.209569][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.215785][ T9637] ? ns_capable_common+0x93/0x100 [ 78.220807][ T9637] ? ns_capable+0x20/0x30 [ 78.225115][ T9637] ? __netlink_ns_capable+0x104/0x140 [ 78.230475][ T9637] nfnetlink_rcv+0x1ba/0x460 [ 78.235049][ T9637] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 78.240488][ T9637] ? netlink_deliver_tap+0x24a/0xbe0 [ 78.245750][ T9637] ? __kasan_check_write+0x14/0x20 [ 78.250838][ T9637] netlink_unicast+0x58c/0x7d0 [ 78.255620][ T9637] ? netlink_attachskb+0x870/0x870 [ 78.260817][ T9637] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 78.266647][ T9637] ? __check_object_size+0x3d/0x437 [ 78.271870][ T9637] netlink_sendmsg+0x91c/0xea0 [ 78.276685][ T9637] ? netlink_unicast+0x7d0/0x7d0 [ 78.281617][ T9637] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 78.287187][ T9637] ? apparmor_socket_sendmsg+0x2a/0x30 [ 78.293269][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.299486][ T9637] ? security_socket_sendmsg+0x8d/0xc0 [ 78.307200][ T9637] ? netlink_unicast+0x7d0/0x7d0 [ 78.312117][ T9637] sock_sendmsg+0xd7/0x130 [ 78.316525][ T9637] ____sys_sendmsg+0x753/0x880 [ 78.321282][ T9637] ? kernel_sendmsg+0x50/0x50 [ 78.325961][ T9637] ? lockdep_init_map+0x1be/0x6d0 [ 78.331003][ T9637] ___sys_sendmsg+0x100/0x170 [ 78.335683][ T9637] ? sendmsg_copy_msghdr+0x70/0x70 [ 78.340799][ T9637] ? __kasan_check_read+0x11/0x20 [ 78.345825][ T9637] ? __lock_acquire+0x8a0/0x4a00 [ 78.350742][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.356956][ T9637] ? __this_cpu_preempt_check+0x35/0x190 [ 78.362567][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.368796][ T9637] ? percpu_counter_add_batch+0x13c/0x190 [ 78.374504][ T9637] ? __fd_install+0x1bc/0x640 [ 78.379163][ T9637] ? find_held_lock+0x35/0x130 [ 78.383909][ T9637] ? __fd_install+0x1bc/0x640 [ 78.388597][ T9637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.394815][ T9637] ? __fget_light+0x1a9/0x230 [ 78.399511][ T9637] ? __fdget+0x1b/0x20 [ 78.403559][ T9637] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.409823][ T9637] __sys_sendmsg+0x105/0x1d0 [ 78.414393][ T9637] ? __sys_sendmsg_sock+0xc0/0xc0 [ 78.419398][ T9637] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.424834][ T9637] ? do_syscall_64+0x26/0x790 [ 78.429490][ T9637] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.435533][ T9637] ? do_syscall_64+0x26/0x790 [ 78.440210][ T9637] __x64_sys_sendmsg+0x78/0xb0 [ 78.445903][ T9637] do_syscall_64+0xfa/0x790 [ 78.450381][ T9637] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.456245][ T9637] RIP: 0033:0x440b89 [ 78.460137][ T9637] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.479718][ T9637] RSP: 002b:00007ffe141bee28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.488182][ T9637] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440b89 [ 78.496128][ T9637] RDX: 0000000000000800 RSI: 00000000200001c0 RDI: 0000000000000004 [ 78.504085][ T9637] RBP: 00000000006cb018 R08: 0000000000000009 R09: 00000000004002c8 [ 78.512033][ T9637] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000402410 [ 78.519982][ T9637] R13: 00000000004024a0 R14: 0000000000000000 R15: 0000000000000000 [ 78.527933][ T9637] Modules linked in: [ 78.531863][ T9637] ---[ end trace 442744e44a0b1c15 ]--- [ 78.537340][ T9637] RIP: 0010:hash_mac4_uadt+0x1bc/0x470 [ 78.542795][ T9637] Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 5c 02 00 00 4c 89 f2 8b 48 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1a [ 78.562568][ T9637] RSP: 0018:ffffc90001e371b0 EFLAGS: 00010246 [ 78.568647][ T9637] RAX: dffffc0000000000 RBX: ffffc90001e37320 RCX: 0000000008000000 [ 78.576771][ T9637] RDX: 0000000000000000 RSI: ffffffff867f8cd5 RDI: ffff88808ef7d904 [ 78.585003][ T9637] RBP: ffffc90001e372b8 R08: 0000000000000000 R09: 0000000000000000 [ 78.592999][ T9637] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffff8880a8144500 [ 78.601008][ T9637] R13: 1ffff920003c6e3a R14: 0000000000000000 R15: ffffc90001e37200 [ 78.608994][ T9637] FS: 0000000001121880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 78.617940][ T9637] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.624516][ T9637] CR2: 0000000020000f98 CR3: 00000000a49d8000 CR4: 00000000001406e0 [ 78.632537][ T9637] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.640523][ T9637] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.648499][ T9637] Kernel panic - not syncing: Fatal exception in interrupt [ 78.656886][ T9637] Kernel Offset: disabled [ 78.661220][ T9637] Rebooting in 86400 seconds..