[ 38.556511] audit: type=1800 audit(1548224294.777:26): pid=7748 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.586334] audit: type=1800 audit(1548224294.777:27): pid=7748 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 38.624656] audit: type=1800 audit(1548224294.777:28): pid=7748 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 39.167035] audit: type=1800 audit(1548224295.427:29): pid=7748 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.53' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.572360] kasan: CONFIG_KASAN_INLINE enabled [ 54.577160] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 54.585729] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 54.591969] CPU: 0 PID: 7899 Comm: syz-executor751 Not tainted 5.0.0-rc3+ #39 [ 54.599221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.608571] RIP: 0010:rxrpc_connect_call+0x1a3/0x5130 [ 54.613744] Code: fa 4c 89 f0 48 c1 e8 03 80 3c 18 00 0f 85 01 46 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 1e 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 07 46 00 00 48 8b 5b 18 48 8d bb f0 01 00 00 48 [ 54.632654] RSP: 0018:ffff88808889ee90 EFLAGS: 00010206 [ 54.638011] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88808ca0596c [ 54.645267] RDX: 0000000000000003 RSI: ffffffff873650fa RDI: 0000000000000018 [ 54.652522] RBP: ffff88808889f3a8 R08: 00000000006000c0 R09: ffff8880a9620d20 [ 54.659778] R10: ffff8880a9620480 R11: 0000000000000000 R12: ffff8880a9177b40 [ 54.668612] R13: ffff88809a470160 R14: ffff88808889f6c8 R15: ffff8880a9177cc8 [ 54.675871] FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000008b34840 [ 54.684081] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 54.689944] CR2: 0000000020000040 CR3: 0000000090872000 CR4: 00000000001406f0 [ 54.697203] Call Trace: [ 54.699850] ? kasan_check_read+0x11/0x20 [ 54.703994] ? rxrpc_discard_expired_client_conns+0xc80/0xc80 [ 54.709873] ? mark_held_locks+0x100/0x100 [ 54.714109] ? rxrpc_new_client_call+0x40d/0x1e50 [ 54.718938] ? print_usage_bug+0xd0/0xd0 [ 54.722986] ? add_lock_to_list.isra.0+0x450/0x450 [ 54.728025] ? rxrpc_new_client_call+0x40d/0x1e50 [ 54.732864] ? mark_held_locks+0xb1/0x100 [ 54.736997] ? __local_bh_enable_ip+0x15a/0x270 [ 54.741749] ? __local_bh_enable_ip+0x15a/0x270 [ 54.746508] ? lockdep_hardirqs_on+0x415/0x5d0 [ 54.751089] ? trace_hardirqs_on+0xbd/0x310 [ 54.755409] ? _raw_spin_unlock_bh+0x31/0x40 [ 54.759816] ? trace_hardirqs_off_caller+0x300/0x300 [ 54.764915] ? do_raw_spin_unlock+0xa0/0x330 [ 54.769313] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.774838] ? check_preemption_disabled+0x48/0x290 [ 54.779882] ? do_raw_spin_trylock+0x270/0x270 [ 54.784459] ? release_sock+0x1e8/0x2b0 [ 54.788459] ? __local_bh_enable_ip+0x15a/0x270 [ 54.793123] ? _raw_spin_unlock_bh+0x31/0x40 [ 54.797514] ? release_sock+0x1e8/0x2b0 [ 54.801469] ? do_raw_write_trylock+0x270/0x270 [ 54.806120] ? __release_sock+0x3a0/0x3a0 [ 54.810257] rxrpc_new_client_call+0xb0b/0x1e50 [ 54.814965] ? rxrpc_do_sendmsg+0x16df/0x27ad [ 54.819445] ? rxrpc_release_call+0xe40/0xe40 [ 54.825344] ? print_usage_bug+0xd0/0xd0 [ 54.830325] ? rxrpc_find_call_by_user_ID+0x107/0x170 [ 54.835873] ? find_held_lock+0x35/0x120 [ 54.839925] ? rxrpc_find_call_by_user_ID+0x107/0x170 [ 54.845101] ? lock_acquire+0x1db/0x570 [ 54.849063] ? lock_downgrade+0x910/0x910 [ 54.853295] ? lock_release+0xc40/0xc40 [ 54.857271] ? kasan_check_write+0x14/0x20 [ 54.861491] ? do_raw_read_unlock+0x3f/0x70 [ 54.865800] ? _raw_read_unlock+0x2d/0x50 [ 54.869933] rxrpc_do_sendmsg+0x16df/0x27ad [ 54.874242] ? kasan_check_read+0x11/0x20 [ 54.878373] ? rxrpc_kernel_send_data+0x6e0/0x6e0 [ 54.883194] ? print_usage_bug+0xd0/0xd0 [ 54.887312] ? arch_local_save_flags+0x50/0x50 [ 54.891885] ? mark_held_locks+0xb1/0x100 [ 54.896032] ? __local_bh_enable_ip+0x15a/0x270 [ 54.900697] ? __local_bh_enable_ip+0x15a/0x270 [ 54.905351] ? lockdep_hardirqs_on+0x415/0x5d0 [ 54.909942] ? trace_hardirqs_on+0xbd/0x310 [ 54.914261] ? lock_sock_nested+0xe2/0x120 [ 54.918482] ? trace_hardirqs_off_caller+0x300/0x300 [ 54.923789] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.929358] ? check_preemption_disabled+0x48/0x290 [ 54.934663] ? lock_sock_nested+0x9a/0x120 [ 54.938889] ? __local_bh_enable_ip+0x15a/0x270 [ 54.943552] rxrpc_sendmsg+0x4b8/0x5f0 [ 54.947423] ? rxrpc_sock_destructor+0x250/0x250 [ 54.952159] sock_sendmsg+0xdd/0x130 [ 54.955868] ___sys_sendmsg+0x409/0x910 [ 54.959829] ? copy_msghdr_from_user+0x570/0x570 [ 54.964583] ? add_lock_to_list.isra.0+0x450/0x450 [ 54.969504] ? add_lock_to_list.isra.0+0x450/0x450 [ 54.974418] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.979942] ? __fget_light+0x2db/0x420 [ 54.983903] ? find_held_lock+0x35/0x120 [ 54.987954] ? fget_raw+0x20/0x20 [ 54.991389] ? __local_bh_enable_ip+0x15a/0x270 [ 54.996041] ? __local_bh_enable_ip+0x15a/0x270 [ 55.000695] ? trace_hardirqs_off_caller+0x300/0x300 [ 55.005782] ? __fdget+0x1b/0x20 [ 55.009135] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.014675] ? sockfd_lookup_light+0xc2/0x160 [ 55.019166] __sys_sendmmsg+0x3bc/0x730 [ 55.023130] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 55.027434] ? __local_bh_enable_ip+0x15a/0x270 [ 55.032093] ? __sys_connect+0x1bb/0x490 [ 55.036258] ? __ia32_sys_accept+0xb0/0xb0 [ 55.040481] ? kasan_check_write+0x14/0x20 [ 55.044704] ? up_read+0x212/0x2b0 [ 55.048238] ? do_fast_syscall_32+0x13b/0xf98 [ 55.052722] ? do_fast_syscall_32+0x13b/0xf98 [ 55.057200] ? trace_hardirqs_on+0xbd/0x310 [ 55.061518] ? entry_SYSENTER_compat+0x70/0x7f [ 55.066082] ? trace_hardirqs_off_caller+0x300/0x300 [ 55.071166] ? __do_page_fault+0x3f1/0xd60 [ 55.075390] __ia32_compat_sys_sendmmsg+0x9f/0x100 [ 55.080312] do_fast_syscall_32+0x333/0xf98 [ 55.084625] ? do_int80_syscall_32+0x880/0x880 [ 55.089287] ? trace_hardirqs_off+0x310/0x310 [ 55.093771] ? syscall_return_slowpath+0x5f0/0x5f0 [ 55.098684] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.104202] ? prepare_exit_to_usermode+0x232/0x3b0 [ 55.109205] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.114035] entry_SYSENTER_compat+0x70/0x7f [ 55.118423] RIP: 0023:0xf7f17869 [ 55.121777] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 55.140768] RSP: 002b:00000000ff96366c EFLAGS: 00000217 ORIG_RAX: 0000000000000159 [ 55.148479] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020005c00 [ 55.155741] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000003 [ 55.163050] RBP: 0000000020000040 R08: 0000000000000000 R09: 0000000000000000 [ 55.170309] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 55.177673] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.185050] Modules linked in: [ 55.188962] ---[ end trace 32887e7d2c420b9a ]--- [ 55.193834] RIP: 0010:rxrpc_connect_call+0x1a3/0x5130 [ 55.199014] Code: fa 4c 89 f0 48 c1 e8 03 80 3c 18 00 0f 85 01 46 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 1e 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 07 46 00 00 48 8b 5b 18 48 8d bb f0 01 00 00 48 [ 55.218061] RSP: 0018:ffff88808889ee90 EFLAGS: 00010206 [ 55.223446] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88808ca0596c [ 55.230703] RDX: 0000000000000003 RSI: ffffffff873650fa RDI: 0000000000000018 [ 55.238022] RBP: ffff88808889f3a8 R08: 00000000006000c0 R09: ffff8880a9620d20 [ 55.245308] R10: ffff8880a9620480 R11: 0000000000000000 R12: ffff8880a9177b40 [ 55.252784] R13: ffff88809a470160 R14: ffff88808889f6c8 R15: ffff8880a9177cc8 [ 55.260042] FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000008b34840 [ 55.268331] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 55.274209] CR2: 0000000020000040 CR3: 0000000090872000 CR4: 00000000001406f0 [ 55.281468] Kernel panic - not syncing: Fatal exception [ 55.287693] Kernel Offset: disabled [ 55.291314] Rebooting in 86400 seconds..