[ 71.651434][ T26] audit: type=1800 audit(1566929268.282:27): pid=10184 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 71.683600][ T26] audit: type=1800 audit(1566929268.282:28): pid=10184 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. [ 72.340751][ T26] audit: type=1800 audit(1566929269.022:29): pid=10184 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 [ 72.362353][ T26] audit: type=1800 audit(1566929269.032:30): pid=10184 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 '10.128.1.53' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.856476][T10339] ------------[ cut here ]------------ [ 81.863148][T10339] WARNING: CPU: 1 PID: 10339 at include/net/sock.h:666 smc_unhash_sk.cold+0x11/0x18 [ 81.874635][T10339] Kernel panic - not syncing: panic_on_warn set ... [ 81.881574][T10339] CPU: 1 PID: 10339 Comm: syz-executor196 Not tainted 5.3.0-rc6 #127 [ 81.890153][T10339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.901399][T10339] Call Trace: [ 81.904711][T10339] dump_stack+0x172/0x1f0 [ 81.909242][T10339] ? smc_listen_work+0x1580/0x15a3 [ 81.914648][T10339] panic+0x2dc/0x755 [ 81.918927][T10339] ? add_taint.cold+0x16/0x16 [ 81.923811][T10339] ? __kasan_check_write+0x14/0x20 [ 81.929003][T10339] ? __warn.cold+0x5/0x4c [ 81.933328][T10339] ? __warn+0xe7/0x1e0 [ 81.937457][T10339] ? smc_unhash_sk.cold+0x11/0x18 [ 81.942833][T10339] __warn.cold+0x20/0x4c [ 81.947252][T10339] ? smc_unhash_sk.cold+0x11/0x18 [ 81.952559][T10339] report_bug+0x263/0x2b0 [ 81.957070][T10339] do_error_trap+0x11b/0x200 [ 81.961671][T10339] do_invalid_op+0x37/0x50 [ 81.966514][T10339] ? smc_unhash_sk.cold+0x11/0x18 [ 81.971786][T10339] invalid_op+0x23/0x30 [ 81.975940][T10339] RIP: 0010:smc_unhash_sk.cold+0x11/0x18 [ 81.981562][T10339] 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 [ 82.002648][T10339] RSP: 0018:ffff888087447ba8 EFLAGS: 00010286 [ 82.008829][T10339] RAX: 0000000000000024 RBX: ffff888092f09240 RCX: 0000000000000000 [ 82.017163][T10339] RDX: 0000000000000000 RSI: ffffffff815c2576 RDI: ffffed1010e88f67 [ 82.025486][T10339] RBP: ffff888087447bd8 R08: 0000000000000024 R09: ffffed1015d260d1 [ 82.033675][T10339] R10: ffffed1015d260d0 R11: ffff8880ae930687 R12: ffff888092f092c0 [ 82.041922][T10339] R13: ffffffff8999e200 R14: ffff888092f09268 R15: 0000000000000001 [ 82.050564][T10339] ? vprintk_func+0x86/0x189 [ 82.055597][T10339] ? smc_unhash_sk.cold+0x11/0x18 [ 82.060943][T10339] __smc_release+0x202/0x450 [ 82.065867][T10339] smc_release+0x10c/0x380 [ 82.070605][T10339] __sock_release+0xce/0x280 [ 82.075214][T10339] sock_close+0x1e/0x30 [ 82.079410][T10339] __fput+0x2ff/0x890 [ 82.083581][T10339] ? __sock_release+0x280/0x280 [ 82.088606][T10339] ____fput+0x16/0x20 [ 82.092575][T10339] task_work_run+0x145/0x1c0 [ 82.097236][T10339] do_exit+0x92f/0x2e50 [ 82.101471][T10339] ? mm_update_next_owner+0x640/0x640 [ 82.107328][T10339] ? down_read_non_owner+0x450/0x450 [ 82.112876][T10339] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 82.126009][T10339] ? handle_mm_fault+0x1d3/0x6b0 [ 82.131551][T10339] do_group_exit+0x135/0x360 [ 82.136148][T10339] __x64_sys_exit_group+0x44/0x50 [ 82.141385][T10339] do_syscall_64+0xfd/0x6a0 [ 82.146178][T10339] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.152545][T10339] RIP: 0033:0x43fe28 [ 82.156458][T10339] Code: Bad RIP value. [ 82.160597][T10339] RSP: 002b:00007fff01a0a2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 82.169338][T10339] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fe28 [ 82.177557][T10339] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 82.185625][T10339] RBP: 00000000004bf6b0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 82.193874][T10339] R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000001 [ 82.202239][T10339] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 82.213226][T10339] Kernel Offset: disabled [ 82.217846][T10339] Rebooting in 86400 seconds..