[info] Using makefile-style concurrent boot in runlevel 2. [ 26.418732] audit: type=1800 audit(1544899164.401:21): pid=5875 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 31.392091] sshd (6035) used greatest stack depth: 15600 bytes left Warning: Permanently added '10.128.0.161' (ECDSA) to the list of known hosts. executing program [ 38.086385] BUG: sleeping function called from invalid context at mm/slab.h:421 [ 38.094078] in_atomic(): 1, irqs_disabled(): 0, pid: 6051, name: syz-executor515 [ 38.101660] 1 lock held by syz-executor515/6051: [ 38.106479] #0: 000000002f6552ef (sk_lock-AF_ALG){+.+.}, at: skcipher_recvmsg+0xbb/0x1420 [ 38.114948] Preemption disabled at: [ 38.114966] [] kernel_fpu_begin+0x16/0x260 [ 38.124425] CPU: 0 PID: 6051 Comm: syz-executor515 Not tainted 4.20.0-rc6-next-20181214+ #171 [ 38.133073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.142407] Call Trace: [ 38.144986] dump_stack+0x244/0x39d [ 38.148604] ? dump_stack_print_info.cold.1+0x20/0x20 [ 38.153793] ? vprintk_func+0x85/0x181 [ 38.157674] ? kernel_fpu_begin+0x16/0x260 [ 38.161898] ___might_sleep.cold.86+0x221/0x254 [ 38.166552] ? depot_save_stack+0x292/0x470 [ 38.170857] ? perf_trace_sched_process_exec+0x860/0x860 [ 38.176349] __might_sleep+0x95/0x190 [ 38.180152] __kmalloc+0x2da/0x760 [ 38.183685] ? trace_hardirqs_off+0xb8/0x310 [ 38.188082] ? kasan_check_read+0x11/0x20 [ 38.192229] ? do_raw_spin_unlock+0xa7/0x330 [ 38.196630] ? skcipher_walk_next+0x7f9/0x17f0 [ 38.201202] skcipher_walk_next+0x7f9/0x17f0 [ 38.205601] ? skcipher_register_instance+0x220/0x220 [ 38.210775] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 38.215346] ? trace_hardirqs_on+0xbd/0x310 [ 38.219649] ? sock_kfree_s+0x29/0x60 [ 38.223432] ? trace_hardirqs_off_caller+0x310/0x310 [ 38.228539] skcipher_walk_first+0xff/0x3a0 [ 38.232860] ? sock_kfree_s+0x29/0x60 [ 38.236656] skcipher_walk_skcipher+0x541/0x700 [ 38.241315] skcipher_walk_virt+0x58/0xd0 [ 38.245450] chacha_simd_stream_xor+0xb3/0xa40 [ 38.250026] ? af_alg_wmem_wakeup+0x7d0/0x7d0 [ 38.254522] ? chacha_4block_xor_ssse3+0x8d0/0x8d0 [ 38.259588] ? refcount_dec_checked+0x70/0x70 [ 38.264183] ? sock_cmsg_send+0x2e0/0x2e0 [ 38.268317] ? preempt_count_add+0xbc/0x1b0 [ 38.272632] chacha_simd+0xd8/0x110 [ 38.276250] skcipher_recvmsg+0xcc9/0x1420 [ 38.280475] ? aa_af_perm+0x5a0/0x5a0 [ 38.284268] ? skcipher_sendmsg_nokey+0x140/0x140 [ 38.289114] ? apparmor_socket_recvmsg+0x29/0x30 [ 38.293875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.299408] ? security_socket_recvmsg+0x9c/0xc0 [ 38.304317] ? skcipher_sendmsg_nokey+0x140/0x140 [ 38.309152] sock_recvmsg+0xd0/0x110 [ 38.312868] ? __sock_recv_ts_and_drops+0x420/0x420 [ 38.318017] ___sys_recvmsg+0x2b6/0x680 [ 38.321993] ? ___sys_sendmsg+0x930/0x930 [ 38.326135] ? alloc_pages_current+0x17b/0x350 [ 38.330709] ? af_alg_sendmsg+0x7fe/0x1260 [ 38.335056] ? fget_raw+0x20/0x20 [ 38.338504] ? af_alg_sendpage+0xb30/0xb30 [ 38.342741] ? skcipher_sendmsg+0xbf/0xf0 [ 38.346880] ? skcipher_setkey+0x50/0x50 [ 38.350951] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.356491] do_recvmmsg+0x303/0xb90 [ 38.360202] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.365727] ? ___sys_recvmsg+0x680/0x680 [ 38.369862] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.375560] ? __vfs_write+0x121/0xab0 [ 38.379444] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.384985] ? fsnotify+0x50e/0xef0 [ 38.388608] ? fsnotify_first_mark+0x350/0x350 [ 38.393179] ? __fsnotify_parent+0xcc/0x430 [ 38.397489] ? fsnotify+0xef0/0xef0 [ 38.401113] ? vfs_write+0x2ad/0x580 [ 38.404819] __sys_recvmmsg+0x265/0x2a0 [ 38.408777] ? __ia32_sys_recvmsg+0xb0/0xb0 [ 38.413093] ? trace_hardirqs_on+0xbd/0x310 [ 38.417400] ? __ia32_sys_read+0xb0/0xb0 [ 38.421461] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.426883] ? trace_hardirqs_off_caller+0x310/0x310 [ 38.431991] __x64_sys_recvmmsg+0xe6/0x140 [ 38.436222] do_syscall_64+0x1b9/0x820 [ 38.440101] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 38.445507] ? syscall_return_slowpath+0x5e0/0x5e0 [ 38.450435] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.455268] ? trace_hardirqs_on_caller+0x310/0x310 [ 38.460274] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 38.465292] ? prepare_exit_to_usermode+0x291/0x3b0 [ 38.470309] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.475157] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.480418] RIP: 0033:0x440349 [ 38.483598] 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 [ 38.502483] RSP: 002b:00007fff9312c608 EFLAGS: 00000203 ORIG_RAX: 000000000000012b [ 38.510282] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440349 [ 38.517534] RDX: 0000000000000001 RSI: 000000002000a280 RDI: 0000000000000004 [ 38.524796] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 38.532048] R10: 0000000000000000 R11: 0000000000000203 R12: 00000000