[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.647014][ T26] audit: type=1800 audit(1566932717.062:33): pid=10018 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=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 72.216501][ T26] kauditd_printk_skb: 1 callbacks suppressed [ 72.216515][ T26] audit: type=1400 audit(1566932721.632:35): avc: denied { map } for pid=10196 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 '10.128.0.222' (ECDSA) to the list of known hosts. executing program executing program executing program executing program [ 78.436940][ T26] audit: type=1400 audit(1566932727.852:36): avc: denied { map } for pid=10208 comm="syz-executor940" path="/root/syz-executor940346700" 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 [ 78.451275][T10216] ------------[ cut here ]------------ [ 78.470082][T10216] WARNING: CPU: 1 PID: 10216 at include/net/sock.h:666 smc_unhash_sk.cold+0x11/0x18 [ 78.479426][T10216] Kernel panic - not syncing: panic_on_warn set ... [ 78.485990][T10216] CPU: 1 PID: 10216 Comm: syz-executor940 Not tainted 5.3.0-rc6 #120 [ 78.494025][T10216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.504053][T10216] Call Trace: [ 78.507325][T10216] dump_stack+0x172/0x1f0 [ 78.511636][T10216] ? smc_listen_work+0x1580/0x15a3 [ 78.516726][T10216] panic+0x2dc/0x755 [ 78.520600][T10216] ? add_taint.cold+0x16/0x16 [ 78.525255][T10216] ? __kasan_check_write+0x14/0x20 [ 78.530344][T10216] ? __warn.cold+0x5/0x4c [ 78.534651][T10216] ? __warn+0xe7/0x1e0 [ 78.538784][T10216] ? smc_unhash_sk.cold+0x11/0x18 [ 78.543785][T10216] __warn.cold+0x20/0x4c [ 78.548003][T10216] ? smc_unhash_sk.cold+0x11/0x18 [ 78.553016][T10216] report_bug+0x263/0x2b0 [ 78.557325][T10216] do_error_trap+0x11b/0x200 [ 78.561977][T10216] do_invalid_op+0x37/0x50 [ 78.566541][T10216] ? smc_unhash_sk.cold+0x11/0x18 [ 78.571542][T10216] invalid_op+0x23/0x30 [ 78.575676][T10216] RIP: 0010:smc_unhash_sk.cold+0x11/0x18 [ 78.581285][T10216] Code: 89 ff e8 3f 4b a6 fa e9 d7 f8 ff ff 4c 89 ff e8 32 4b a6 fa e9 57 fa ff ff e8 b8 3b 6c fa 48 c7 c7 a0 3b 42 88 e8 f0 da 55 fa <0f> 0b e9 ad 43 ff ff e8 a0 3b 6c fa 48 c7 c7 a0 3b 42 88 e8 d8 da [ 78.600949][T10216] RSP: 0018:ffff88808d66fba8 EFLAGS: 00010286 [ 78.606988][T10216] RAX: 0000000000000024 RBX: ffff888090cb5240 RCX: 0000000000000000 [ 78.614934][T10216] RDX: 0000000000000000 RSI: ffffffff815c2576 RDI: ffffed1011acdf67 [ 78.622893][T10216] RBP: ffff88808d66fbd8 R08: 0000000000000024 R09: ffffed1015d260d1 [ 78.630841][T10216] R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff888090cb52c0 [ 78.638786][T10216] R13: ffffffff8999e200 R14: ffff888090cb5268 R15: 0000000000000001 [ 78.646743][T10216] ? vprintk_func+0x86/0x189 [ 78.651314][T10216] ? smc_unhash_sk.cold+0x11/0x18 [ 78.656315][T10216] __smc_release+0x202/0x450 [ 78.660882][T10216] smc_release+0x10c/0x380 [ 78.665277][T10216] __sock_release+0xce/0x280 [ 78.669852][T10216] sock_close+0x1e/0x30 [ 78.673983][T10216] __fput+0x2ff/0x890 [ 78.677941][T10216] ? __sock_release+0x280/0x280 [ 78.682770][T10216] ____fput+0x16/0x20 [ 78.686726][T10216] task_work_run+0x145/0x1c0 [ 78.691291][T10216] do_exit+0x92f/0x2e50 [ 78.695426][T10216] ? mm_update_next_owner+0x640/0x640 [ 78.700778][T10216] ? down_read_non_owner+0x450/0x450 [ 78.706039][T10216] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 78.712253][T10216] ? handle_mm_fault+0x1d3/0x6b0 [ 78.717170][T10216] do_group_exit+0x135/0x360 [ 78.721734][T10216] __x64_sys_exit_group+0x44/0x50 [ 78.726735][T10216] do_syscall_64+0xfd/0x6a0 [ 78.731217][T10216] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.737083][T10216] RIP: 0033:0x43ff28 [ 78.740979][T10216] Code: 00 00 be 3c 00 00 00 eb 19 66 0f 1f 84 00 00 00 00 00 48 89 d7 89 f0 0f 05 48 3d 00 f0 ff ff 77 21 f4 48 89 d7 44 89 c0 0f 05 <48> 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 0f 1f 84 00 00 00 [ 78.760558][T10216] RSP: 002b:00007fffde418598 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 78.768946][T10216] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ff28 [ 78.776891][T10216] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 78.784836][T10216] RBP: 00000000004bf750 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 78.792781][T10216] R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000001 [ 78.800726][T10216] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 78.809859][T10216] Kernel Offset: disabled [ 78.814176][T10216] Rebooting in 86400 seconds..