[ 66.272681][ T24] audit: type=1800 audit(1566930901.079:27): pid=9836 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 66.326863][ T24] audit: type=1800 audit(1566930901.079:28): pid=9836 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. [ 66.938854][ T24] audit: type=1800 audit(1566930901.779:29): pid=9836 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 [ 66.959735][ T24] audit: type=1800 audit(1566930901.789:30): pid=9836 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.208' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 92.506500][ T9989] ------------[ cut here ]------------ [ 92.512508][ T9989] WARNING: CPU: 0 PID: 9989 at include/net/sock.h:666 smc_unhash_sk.cold+0x11/0x18 [ 92.521789][ T9989] Kernel panic - not syncing: panic_on_warn set ... [ 92.528359][ T9989] CPU: 0 PID: 9989 Comm: syz-executor430 Not tainted 5.3.0-rc5+ #178 [ 92.536405][ T9989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.546526][ T9989] Call Trace: [ 92.549807][ T9989] dump_stack+0x172/0x1f0 [ 92.554119][ T9989] ? smc_listen_work+0x1560/0x15a3 [ 92.559213][ T9989] panic+0x2dc/0x755 [ 92.563087][ T9989] ? add_taint.cold+0x16/0x16 [ 92.567747][ T9989] ? __kasan_check_write+0x14/0x20 [ 92.572835][ T9989] ? __warn.cold+0x5/0x4c [ 92.577490][ T9989] ? __warn+0xe7/0x1e0 [ 92.581543][ T9989] ? smc_unhash_sk.cold+0x11/0x18 [ 92.586548][ T9989] __warn.cold+0x20/0x4c [ 92.590791][ T9989] ? smc_unhash_sk.cold+0x11/0x18 [ 92.595887][ T9989] report_bug+0x263/0x2b0 [ 92.600289][ T9989] do_error_trap+0x11b/0x200 [ 92.604856][ T9989] do_invalid_op+0x37/0x50 [ 92.609398][ T9989] ? smc_unhash_sk.cold+0x11/0x18 [ 92.614586][ T9989] invalid_op+0x23/0x30 [ 92.618730][ T9989] RIP: 0010:smc_unhash_sk.cold+0x11/0x18 [ 92.624519][ T9989] Code: 89 ff e8 0f 78 a6 fa e9 d7 f8 ff ff 4c 89 ff e8 02 78 a6 fa e9 57 fa ff ff e8 e8 67 6c fa 48 c7 c7 60 38 42 88 e8 b0 08 56 fa <0f> 0b e9 ad 43 ff ff e8 d0 67 6c fa 48 c7 c7 60 38 42 88 e8 98 08 [ 92.644188][ T9989] RSP: 0018:ffff8880956e7ba8 EFLAGS: 00010286 [ 92.650412][ T9989] RAX: 0000000000000024 RBX: ffff888090e73240 RCX: 0000000000000000 [ 92.658360][ T9989] RDX: 0000000000000000 RSI: ffffffff815c2456 RDI: ffffed1012adcf67 [ 92.666310][ T9989] RBP: ffff8880956e7bd8 R08: 0000000000000024 R09: ffffed1015d060d1 [ 92.674347][ T9989] R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff888090e732c0 [ 92.682299][ T9989] R13: ffffffff8999df40 R14: ffff888090e73268 R15: 0000000000000001 [ 92.690268][ T9989] ? vprintk_func+0x86/0x189 [ 92.694844][ T9989] ? smc_unhash_sk.cold+0x11/0x18 [ 92.699847][ T9989] __smc_release+0x202/0x450 [ 92.704610][ T9989] smc_release+0x10c/0x380 [ 92.709350][ T9989] __sock_release+0xce/0x280 [ 92.713973][ T9989] sock_close+0x1e/0x30 [ 92.718112][ T9989] __fput+0x2ff/0x890 [ 92.722079][ T9989] ? __sock_release+0x280/0x280 [ 92.726909][ T9989] ____fput+0x16/0x20 [ 92.730960][ T9989] task_work_run+0x145/0x1c0 [ 92.735703][ T9989] do_exit+0x92f/0x2e50 [ 92.739859][ T9989] ? mm_update_next_owner+0x640/0x640 [ 92.745214][ T9989] ? down_read_non_owner+0x450/0x450 [ 92.750481][ T9989] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 92.756872][ T9989] ? handle_mm_fault+0x1d3/0x6b0 [ 92.761880][ T9989] do_group_exit+0x135/0x360 [ 92.766448][ T9989] __x64_sys_exit_group+0x44/0x50 [ 92.771457][ T9989] do_syscall_64+0xfd/0x6a0 [ 92.775943][ T9989] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.781812][ T9989] RIP: 0033:0x43ff28 [ 92.785687][ T9989] 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 [ 92.805618][ T9989] RSP: 002b:00007fff12dcf4d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 92.814019][ T9989] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ff28 [ 92.821978][ T9989] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 92.830017][ T9989] RBP: 00000000004bf750 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 92.837969][ T9989] R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000001 [ 92.845922][ T9989] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 92.854970][ T9989] Kernel Offset: disabled [ 92.859512][ T9989] Rebooting in 86400 seconds..