[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.740031][ T26] audit: type=1800 audit(1559623256.723:25): pid=8678 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.781617][ T26] audit: type=1800 audit(1559623256.733:26): pid=8678 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.803139][ T26] audit: type=1800 audit(1559623256.733:27): pid=8678 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.152' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 76.012227][T12129] WARNING: CPU: 1 PID: 12129 at include/net/sock.h:671 smc_unhash_sk+0x1ea/0x260 [ 76.021478][T12129] Kernel panic - not syncing: panic_on_warn set ... [ 76.028074][T12129] CPU: 1 PID: 12129 Comm: syz-executor673 Not tainted 5.2.0-rc2+ #39 [ 76.036142][T12129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.046193][T12129] Call Trace: [ 76.049498][T12129] dump_stack+0x172/0x1f0 [ 76.053829][T12129] ? smc_unhash_sk+0xf0/0x260 [ 76.058521][T12129] panic+0x2cb/0x744 [ 76.062417][T12129] ? __warn_printk+0xf3/0xf3 [ 76.067017][T12129] ? smc_unhash_sk+0x1ea/0x260 [ 76.071783][T12129] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.078149][T12129] ? __warn.cold+0x5/0x4d [ 76.082566][T12129] ? __warn+0xe8/0x1d0 [ 76.086637][T12129] ? smc_unhash_sk+0x1ea/0x260 [ 76.091396][T12129] __warn.cold+0x20/0x4d [ 76.095636][T12129] ? mark_held_locks+0xf0/0xf0 [ 76.100397][T12129] ? smc_unhash_sk+0x1ea/0x260 [ 76.105163][T12129] report_bug+0x263/0x2b0 [ 76.109497][T12129] do_error_trap+0x11b/0x200 [ 76.114089][T12129] do_invalid_op+0x37/0x50 [ 76.118502][T12129] ? smc_unhash_sk+0x1ea/0x260 [ 76.123262][T12129] invalid_op+0x14/0x20 [ 76.127416][T12129] RIP: 0010:smc_unhash_sk+0x1ea/0x260 [ 76.132786][T12129] Code: ff ff ff ff e8 b7 7e 95 fe e8 92 11 8c fa 4c 89 ef e8 7a fa 37 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 76 11 8c fa <0f> 0b eb 86 4c 89 e7 e8 9a aa c4 fa e9 5f ff ff ff e8 b0 aa c4 fa [ 76.152394][T12129] RSP: 0018:ffff88809333fbd0 EFLAGS: 00010293 [ 76.158460][T12129] RAX: ffff8880868425c0 RBX: ffff8880a4390980 RCX: ffffffff86e4927e [ 76.166447][T12129] RDX: 0000000000000000 RSI: ffffffff86e492fa RDI: 0000000000000005 [ 76.174420][T12129] RBP: ffff88809333fc00 R08: ffff8880868425c0 R09: ffffed1014872141 [ 76.182393][T12129] R10: ffffed1014872140 R11: ffff8880a4390a03 R12: ffff8880a4390a00 [ 76.190456][T12129] R13: ffffffff89751b40 R14: ffff8880a43909a8 R15: 0000000000000001 [ 76.198463][T12129] ? smc_unhash_sk+0x16e/0x260 [ 76.203670][T12129] ? smc_unhash_sk+0x1ea/0x260 [ 76.208448][T12129] smc_release+0x32c/0x7b0 [ 76.212872][T12129] __sock_release+0xce/0x2a0 [ 76.217497][T12129] sock_close+0x1b/0x30 [ 76.221663][T12129] __fput+0x2ff/0x890 [ 76.225656][T12129] ? __sock_release+0x2a0/0x2a0 [ 76.230517][T12129] ____fput+0x16/0x20 [ 76.235033][T12129] task_work_run+0x145/0x1c0 [ 76.239626][T12129] do_exit+0x90a/0x2fa0 [ 76.243792][T12129] ? mm_update_next_owner+0x640/0x640 [ 76.249167][T12129] ? kasan_check_write+0x14/0x20 [ 76.254102][T12129] ? up_read+0xc4/0x200 [ 76.258258][T12129] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 76.263716][T12129] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 76.269180][T12129] do_group_exit+0x135/0x370 [ 76.273784][T12129] __x64_sys_exit_group+0x44/0x50 [ 76.278812][T12129] do_syscall_64+0xfd/0x680 [ 76.283326][T12129] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.289224][T12129] RIP: 0033:0x440308 [ 76.293123][T12129] 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 [ 76.312815][T12129] RSP: 002b:00007fff21628358 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 76.321237][T12129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440308 [ 76.329247][T12129] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 76.337221][T12129] RBP: 00000000004bf9d0 R08: 00000000000000e7 R09: ffffffffffffffd4 [ 76.346304][T12129] R10: 0000000024040000 R11: 0000000000000246 R12: 0000000000000001 [ 76.354285][T12129] R13: 00000000006d2180 R14: 0000000000000000 R15: 0000000000000000 [ 76.363387][T12129] Kernel Offset: disabled [ 76.367773][T12129] Rebooting in 86400 seconds..