[ 84.760853][ T27] audit: type=1400 audit(1576668474.787:38): avc: denied { watch } for pid=9973 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 84.981558][ T27] audit: type=1800 audit(1576668475.017:39): pid=9886 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 [ 85.005837][ T27] audit: type=1800 audit(1576668475.017:40): pid=9886 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [ 85.865968][ T27] audit: type=1400 audit(1576668475.907:41): avc: denied { map } for pid=10062 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.159' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 137.928869][ T27] audit: type=1400 audit(1576668527.967:42): avc: denied { map } for pid=10074 comm="syz-executor292" path="/root/syz-executor292587787" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 158.013031][T10075] ------------[ cut here ]------------ [ 158.018704][T10075] kernel BUG at fs/buffer.c:3094! [ 158.024425][T10075] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 158.030631][T10075] CPU: 1 PID: 10075 Comm: syz-executor292 Not tainted 5.5.0-rc2-syzkaller #0 [ 158.039377][T10075] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 158.050150][T10075] RIP: 0010:submit_bh_wbc+0x71c/0x900 [ 158.055506][T10075] Code: 14 e5 ff f0 80 63 01 f7 e9 ab fa ff ff e8 bc a5 a7 ff 41 81 cd 00 10 00 00 e9 4d fe ff ff e8 ab a5 a7 ff 0f 0b e8 a4 a5 a7 ff <0f> 0b e8 9d a5 a7 ff 0f 0b e8 96 a5 a7 ff 0f 0b e8 8f a5 a7 ff 0f [ 158.075215][T10075] RSP: 0018:ffffc90001f37bf8 EFLAGS: 00010293 [ 158.081970][T10075] RAX: ffff888097cd6540 RBX: ffff88808c089888 RCX: ffffffff81cd7f8d [ 158.089938][T10075] RDX: 0000000000000000 RSI: ffffffff81cd85fc RDI: 0000000000000001 [ 158.098049][T10075] RBP: ffffc90001f37c40 R08: ffff888097cd6540 R09: ffffed1011811312 [ 158.106399][T10075] R10: ffffed1011811311 R11: ffff88808c08988f R12: 0000000000000000 [ 158.115539][T10075] R13: 0000000000000800 R14: 0000000000000001 R15: 0000000000000000 [ 158.123504][T10075] FS: 0000000001f36940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 158.132987][T10075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 158.139820][T10075] CR2: 00007f41849f0ef0 CR3: 0000000095d70000 CR4: 00000000001406e0 [ 158.147894][T10075] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 158.155867][T10075] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 158.163833][T10075] Call Trace: [ 158.167243][T10075] __sync_dirty_buffer+0x12b/0x350 [ 158.172365][T10075] sync_dirty_buffer+0x1b/0x20 [ 158.177652][T10075] fat_set_state+0x242/0x330 [ 158.182247][T10075] ? __sync_blockdev+0x88/0xe0 [ 158.187203][T10075] fat_put_super+0x46/0xd0 [ 158.191608][T10075] ? fat_statfs+0x4c0/0x4c0 [ 158.196094][T10075] generic_shutdown_super+0x14c/0x370 [ 158.201461][T10075] kill_block_super+0xa0/0x100 [ 158.206209][T10075] deactivate_locked_super+0x95/0x100 [ 158.211580][T10075] deactivate_super+0x1b2/0x1d0 [ 158.216939][T10075] ? mount_bdev+0x3c0/0x3c0 [ 158.221513][T10075] ? dput+0x38/0xe10 [ 158.225389][T10075] ? dput+0x1ed/0xe10 [ 158.231963][T10075] ? mnt_get_writers.isra.0+0xf9/0x150 [ 158.237932][T10075] cleanup_mnt+0x351/0x4c0 [ 158.242423][T10075] ? trace_hardirqs_on+0x67/0x240 [ 158.247459][T10075] __cleanup_mnt+0x16/0x20 [ 158.251950][T10075] task_work_run+0x145/0x1c0 [ 158.256525][T10075] exit_to_usermode_loop+0x316/0x380 [ 158.261806][T10075] do_syscall_64+0x676/0x790 [ 158.266397][T10075] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 158.272275][T10075] RIP: 0033:0x448c07 [ 158.276160][T10075] Code: 00 00 00 b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 5d a2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 3d a2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 158.295886][T10075] RSP: 002b:00007ffc40282788 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 158.304323][T10075] RAX: 0000000000000000 RBX: 000000000002675b RCX: 0000000000448c07 [ 158.312287][T10075] RDX: 0000000000400dc7 RSI: 0000000000000002 RDI: 00007ffc40282830 [ 158.320365][T10075] RBP: 0000000000002abe R08: 0000000000000000 R09: 000000000000000a [ 158.328450][T10075] R10: 0000000000000005 R11: 0000000000000206 R12: 00007ffc40283890 [ 158.336415][T10075] R13: 0000000001f37940 R14: 0000000000000000 R15: 0000000000000000 [ 158.344384][T10075] Modules linked in: [ 158.348416][T10075] ---[ end trace c010b278a98f0232 ]--- [ 158.353929][T10075] RIP: 0010:submit_bh_wbc+0x71c/0x900 [ 158.359389][T10075] Code: 14 e5 ff f0 80 63 01 f7 e9 ab fa ff ff e8 bc a5 a7 ff 41 81 cd 00 10 00 00 e9 4d fe ff ff e8 ab a5 a7 ff 0f 0b e8 a4 a5 a7 ff <0f> 0b e8 9d a5 a7 ff 0f 0b e8 96 a5 a7 ff 0f 0b e8 8f a5 a7 ff 0f [ 158.379367][T10075] RSP: 0018:ffffc90001f37bf8 EFLAGS: 00010293 [ 158.394114][T10075] RAX: ffff888097cd6540 RBX: ffff88808c089888 RCX: ffffffff81cd7f8d [ 158.402112][T10075] RDX: 0000000000000000 RSI: ffffffff81cd85fc RDI: 0000000000000001 [ 158.410289][T10075] RBP: ffffc90001f37c40 R08: ffff888097cd6540 R09: ffffed1011811312 [ 158.418319][T10075] R10: ffffed1011811311 R11: ffff88808c08988f R12: 0000000000000000 [ 158.426323][T10075] R13: 0000000000000800 R14: 0000000000000001 R15: 0000000000000000 [ 158.434332][T10075] FS: 0000000001f36940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 158.443375][T10075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 158.449968][T10075] CR2: 000000000152d458 CR3: 0000000095d70000 CR4: 00000000001406e0 [ 158.458011][T10075] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 158.466000][T10075] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 158.474003][T10075] Kernel panic - not syncing: Fatal exception [ 158.480770][T10075] Kernel Offset: disabled [ 158.485107][T10075] Rebooting in 86400 seconds..