[ 41.087659] audit: type=1800 audit(1579158677.326:32): pid=7891 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 46.695769] kauditd_printk_skb: 2 callbacks suppressed [ 46.695784] audit: type=1400 audit(1579158683.036:35): avc: denied { map } for pid=8064 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. executing program [ 62.969656] audit: type=1400 audit(1579158699.306:36): avc: denied { map } for pid=8076 comm="syz-executor803" path="/root/syz-executor803801769" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 62.996647] kasan: CONFIG_KASAN_INLINE enabled [ 63.001322] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 63.009165] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 63.015407] CPU: 1 PID: 8076 Comm: syz-executor803 Not tainted 4.19.96-syzkaller #0 [ 63.023200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.032603] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 63.037264] Code: 65 6f 61 fb 45 84 f6 0f 84 ab 02 00 00 e8 17 6e 61 fb 49 8d bd 48 1b 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 67 03 00 00 4d 8b b5 48 1b 00 00 e8 d9 7e 4e fb [ 63.056371] RSP: 0018:ffff888086e1f988 EFLAGS: 00010206 [ 63.061730] RAX: dffffc0000000000 RBX: ffff8880a8380100 RCX: ffffffff8609aa65 [ 63.068997] RDX: 0000000000000369 RSI: ffffffff8609a7a9 RDI: 0000000000001b48 [ 63.076261] RBP: ffff888086e1f9b8 R08: ffff8880a6310600 R09: ffffed1015d24733 [ 63.083614] R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 000000000000002c [ 63.090880] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8609ab60 [ 63.098490] FS: 0000000000e19880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 63.106710] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.112600] CR2: 0000559ab8ee8500 CR3: 000000008b83a000 CR4: 00000000001406e0 [ 63.119862] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.127122] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.134376] Call Trace: [ 63.136952] ? xt_rateest_put+0x440/0x440 [ 63.141096] xt_rateest_tg_destroy+0x72/0xa0 [ 63.145553] ? xt_percpu_counter_free+0x8f/0xd0 [ 63.150245] translate_table+0x11f4/0x1d80 [ 63.154481] ? arpt_alloc_initial_table+0x690/0x690 [ 63.159494] ? lock_downgrade+0x880/0x880 [ 63.163648] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 63.169226] ? _copy_from_user+0xdd/0x150 [ 63.173421] do_arpt_set_ctl+0x30a/0x640 [ 63.177561] ? compat_do_arpt_get_ctl+0x850/0x850 [ 63.182398] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 63.187236] ? wait_for_completion+0x440/0x440 [ 63.191818] ? mutex_unlock+0xd/0x10 [ 63.195527] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 63.200799] nf_setsockopt+0x77/0xd0 [ 63.204511] ip_setsockopt+0xdf/0x100 [ 63.208323] udp_setsockopt+0x68/0xb0 [ 63.212167] sock_common_setsockopt+0x94/0xd0 [ 63.216708] __sys_setsockopt+0x17a/0x280 [ 63.221260] ? kernel_accept+0x310/0x310 [ 63.225332] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 63.230089] ? do_syscall_64+0x26/0x620 [ 63.234157] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 63.239514] ? do_syscall_64+0x26/0x620 [ 63.243609] __x64_sys_setsockopt+0xbe/0x150 [ 63.248011] do_syscall_64+0xfd/0x620 [ 63.251809] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 63.256991] RIP: 0033:0x4419a9 [ 63.260173] 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 [ 63.279260] RSP: 002b:00007fffed4bac58 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 63.286980] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004419a9 [ 63.294246] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 63.301573] RBP: 00000000006cc018 R08: 0000000000000430 R09: 00000000004002c8 [ 63.308838] R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000403230 [ 63.316098] R13: 00000000004032c0 R14: 0000000000000000 R15: 0000000000000000 [ 63.323407] Modules linked in: [ 63.327138] ---[ end trace 3be81a4d07fe8889 ]--- [ 63.331906] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 63.336630] Code: 65 6f 61 fb 45 84 f6 0f 84 ab 02 00 00 e8 17 6e 61 fb 49 8d bd 48 1b 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 67 03 00 00 4d 8b b5 48 1b 00 00 e8 d9 7e 4e fb [ 63.355601] RSP: 0018:ffff888086e1f988 EFLAGS: 00010206 [ 63.360973] RAX: dffffc0000000000 RBX: ffff8880a8380100 RCX: ffffffff8609aa65 [ 63.368539] RDX: 0000000000000369 RSI: ffffffff8609a7a9 RDI: 0000000000001b48 [ 63.375860] RBP: ffff888086e1f9b8 R08: ffff8880a6310600 R09: ffffed1015d24733 [ 63.383155] R10: ffffed1015d24732 R11: ffff8880ae923993 R12: 000000000000002c [ 63.390480] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8609ab60 [ 63.397788] FS: 0000000000e19880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 63.406147] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.412076] CR2: 0000559ab8ee8500 CR3: 000000008b83a000 CR4: 00000000001406e0 [ 63.419511] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.426814] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.434077] Kernel panic - not syncing: Fatal exception [ 63.440936] Kernel Offset: disabled [ 63.444567] Rebooting in 86400 seconds..