[ 39.901495] audit: type=1800 audit(1563689752.021:32): pid=7373 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 periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: ssh[ 40.556528] audit: type=1800 audit(1563689752.751:33): pid=7373 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 d[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 64.710854] kauditd_printk_skb: 2 callbacks suppressed [ 64.710866] audit: type=1400 audit(1563689776.911:36): avc: denied { map } for pid=7557 comm="syz-executor114" path="/root/syz-executor114974592" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 64.713898] kasan: CONFIG_KASAN_INLINE enabled [ 64.748509] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 64.755955] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 64.762467] CPU: 1 PID: 7557 Comm: syz-executor114 Not tainted 4.19.59 #32 [ 64.769481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.778849] RIP: 0010:rxrpc_connect_call+0xe0/0x48d0 [ 64.783987] Code: 03 80 3c 18 00 0f 85 a9 40 00 00 48 8b 85 08 ff ff ff 48 8b 18 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 76 40 00 00 48 8b 5b 18 48 8d bb f0 01 00 00 48 [ 64.803027] RSP: 0018:ffff888084cef660 EFLAGS: 00010206 [ 64.809198] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88809583d964 [ 64.816463] RDX: 0000000000000003 RSI: ffffffff8652c870 RDI: 0000000000000018 [ 64.824205] RBP: ffff888084cef7d0 R08: 00000000006000c0 R09: ffff888078ba4ca0 [ 64.832046] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809583fb40 [ 64.839334] R13: ffff8882160c8160 R14: ffff8882160c8150 R15: ffff888084cef8f8 [ 64.846814] FS: 0000000000f4b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 64.856065] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.862666] CR2: 0000000020000040 CR3: 0000000095082000 CR4: 00000000001406e0 [ 64.870440] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.878509] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.886158] Call Trace: [ 64.889042] ? release_sock+0x156/0x1c0 [ 64.893050] ? find_held_lock+0x35/0x130 [ 64.897317] ? rxrpc_discard_expired_client_conns+0x8b0/0x8b0 [ 64.903546] ? lockdep_hardirqs_on+0x415/0x5d0 [ 64.908173] ? release_sock+0x156/0x1c0 [ 64.912162] ? trace_hardirqs_on+0x67/0x220 [ 64.916922] ? release_sock+0x156/0x1c0 [ 64.921025] ? __local_bh_enable_ip+0x15a/0x270 [ 64.925813] ? _raw_spin_unlock_bh+0x31/0x40 [ 64.930320] rxrpc_new_client_call+0x8e7/0x1880 [ 64.934993] ? rxrpc_do_sendmsg+0xfbe/0x1c8f [ 64.939909] rxrpc_do_sendmsg+0xfbe/0x1c8f [ 64.944376] ? rxrpc_kernel_send_data+0x4b0/0x4b0 [ 64.949360] ? __local_bh_enable_ip+0x15a/0x270 [ 64.954192] ? lockdep_hardirqs_on+0x415/0x5d0 [ 64.958859] ? lock_sock_nested+0x9a/0x120 [ 64.963222] ? __local_bh_enable_ip+0x15a/0x270 [ 64.967896] rxrpc_sendmsg+0x4b8/0x5f0 [ 64.971833] ? rxrpc_sock_destructor+0x170/0x170 [ 64.976605] sock_sendmsg+0xd7/0x130 [ 64.980664] ___sys_sendmsg+0x3e2/0x920 [ 64.984978] ? copy_msghdr_from_user+0x430/0x430 [ 64.989739] ? mark_held_locks+0x100/0x100 [ 64.994060] ? __lock_acquire+0x6eb/0x48f0 [ 64.998478] ? __lock_acquire+0x6eb/0x48f0 [ 65.002700] ? mark_held_locks+0x100/0x100 [ 65.007020] ? mark_held_locks+0x100/0x100 [ 65.011254] ? mark_held_locks+0x100/0x100 [ 65.016305] ? find_held_lock+0x35/0x130 [ 65.020493] ? reacquire_held_locks+0xb7/0x3e0 [ 65.025397] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 65.031006] ? __fget_light+0x1a9/0x230 [ 65.035119] ? __fdget+0x1b/0x20 [ 65.038623] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 65.044602] ? sockfd_lookup_light+0xcb/0x180 [ 65.049300] __sys_sendmmsg+0x1bf/0x4e0 [ 65.053314] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 65.057633] ? __local_bh_enable_ip+0x15a/0x270 [ 65.062561] ? __sys_connect+0x12d/0x330 [ 65.066619] ? __ia32_sys_accept+0xb0/0xb0 [ 65.071069] ? __do_page_fault+0x484/0xe90 [ 65.075589] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 65.080813] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 65.085873] ? do_syscall_64+0x26/0x620 [ 65.090025] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 65.095417] ? do_syscall_64+0x26/0x620 [ 65.099559] __x64_sys_sendmmsg+0x9d/0x100 [ 65.104014] do_syscall_64+0xfd/0x620 [ 65.107810] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 65.113126] RIP: 0033:0x440249 [ 65.116726] 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 [ 65.136201] RSP: 002b:00007ffe7d95f608 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 65.144210] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440249 [ 65.151832] RDX: 0000000000000001 RSI: 0000000020005c00 RDI: 0000000000000003 [ 65.159467] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 65.166966] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ad0 [ 65.174537] R13: 0000000000401b60 R14: 0000000000000000 R15: 0000000000000000 [ 65.182928] Modules linked in: [ 65.186932] ---[ end trace 5889db90ee6c9794 ]--- [ 65.192238] RIP: 0010:rxrpc_connect_call+0xe0/0x48d0 [ 65.197624] Code: 03 80 3c 18 00 0f 85 a9 40 00 00 48 8b 85 08 ff ff ff 48 8b 18 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 76 40 00 00 48 8b 5b 18 48 8d bb f0 01 00 00 48 [ 65.217143] RSP: 0018:ffff888084cef660 EFLAGS: 00010206 [ 65.222747] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88809583d964 [ 65.230659] RDX: 0000000000000003 RSI: ffffffff8652c870 RDI: 0000000000000018 [ 65.238583] RBP: ffff888084cef7d0 R08: 00000000006000c0 R09: ffff888078ba4ca0 [ 65.246109] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809583fb40 [ 65.253470] R13: ffff8882160c8160 R14: ffff8882160c8150 R15: ffff888084cef8f8 [ 65.260918] FS: 0000000000f4b880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 65.270517] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.276450] CR2: 0000000020000040 CR3: 0000000095082000 CR4: 00000000001406e0 [ 65.283793] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.291362] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.298697] Kernel panic - not syncing: Fatal exception [ 65.305743] Kernel Offset: disabled [ 65.309380] Rebooting in 86400 seconds..