[ 43.615082] audit: type=1800 audit(1584596890.002:30): pid=7837 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [ 43.636758] audit: type=1800 audit(1584596890.002:31): pid=7837 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.627859] kauditd_printk_skb: 4 callbacks suppressed [ 52.627874] audit: type=1400 audit(1584596899.042:36): avc: denied { map } for pid=8023 comm="syz-executor891" path="/root/syz-executor891318582" 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 [ 52.634227] overlayfs: upper fs does not support tmpfile. [ 52.666355] overlayfs: upper fs does not support xattr, falling back to index=off and metacopy=off. [ 52.677026] audit: type=1400 audit(1584596899.092:37): avc: denied { associate } for pid=8023 comm="syz-executor891" name="cpuacct.usage_percpu_sys" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 52.680172] ------------[ cut here ]------------ [ 52.701233] audit: type=1400 audit(1584596899.092:38): avc: denied { associate } for pid=8023 comm="syz-executor891" name="cpuacct.usage_percpu_sys" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:hugetlbfs_t:s0 tclass=filesystem permissive=1 [ 52.705917] kernel BUG at mm/hugetlb.c:3371! [ 52.706443] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 52.730515] audit: type=1400 audit(1584596899.092:39): avc: denied { map } for pid=8023 comm="syz-executor891" path="/root/file0/bus/cpuacct.usage_percpu_sys" dev="overlay" ino=28335 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 [ 52.734555] CPU: 0 PID: 8023 Comm: syz-executor891 Not tainted 4.19.111-syzkaller #0 [ 52.775016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.784411] RIP: 0010:__unmap_hugepage_range+0x8e4/0xa90 [ 52.789848] Code: 4c 89 ea e8 6e 7b 93 ff 66 90 4c 89 ff e8 14 e4 84 05 e9 59 fc ff ff e8 9a 79 cd ff 0f 0b e8 93 79 cd ff 0f 0b e8 8c 79 cd ff <0f> 0b e8 85 79 cd ff 48 8b 94 24 b0 00 00 00 b9 01 00 00 00 48 89 [ 52.808734] RSP: 0018:ffff8880971efa38 EFLAGS: 00010293 [ 52.814078] RAX: ffff888092e58080 RBX: ffffffff8b6e2b30 RCX: ffffffff819a249c [ 52.821328] RDX: 0000000000000000 RSI: ffffffff819a2b14 RDI: 0000000000000007 [ 52.828581] RBP: ffff888090e81640 R08: ffff888092e58080 R09: fffffbfff16d1ae9 [ 52.835833] R10: fffffbfff16d1ae8 R11: 0000000000000003 R12: 0000000020000000 [ 52.843086] R13: 0000000000003000 R14: 0000000000000000 R15: 0000000000200000 [ 52.850342] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 52.858674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.864636] CR2: 000055a72a8aa1b0 CR3: 000000008b90c000 CR4: 00000000001406f0 [ 52.871902] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.879152] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.886406] Call Trace: [ 52.888997] ? huge_pte_offset+0x410/0x410 [ 52.893216] ? lock_acquire+0x170/0x400 [ 52.897184] ? unmap_single_vma+0x224/0x300 [ 52.901490] __unmap_hugepage_range_final+0x30/0x70 [ 52.906491] unmap_single_vma+0x238/0x300 [ 52.910627] unmap_vmas+0xa9/0x180 [ 52.914164] exit_mmap+0x2b2/0x510 [ 52.917689] ? __ia32_sys_munmap+0x80/0x80 [ 52.921908] ? trace_hardirqs_off+0x50/0x200 [ 52.926308] ? __khugepaged_exit+0x2c3/0x3d0 [ 52.930700] ? rcu_read_lock_sched_held+0x10a/0x130 [ 52.935716] ? kmem_cache_free+0x218/0x260 [ 52.939958] ? __khugepaged_exit+0x2e4/0x3d0 [ 52.944352] mmput+0x14e/0x4a0 [ 52.947533] do_exit+0xac8/0x2f30 [ 52.950970] ? vma_is_stack_for_current+0xc0/0xc0 [ 52.955794] ? iterate_fd+0x350/0x350 [ 52.959605] ? mm_update_next_owner+0x650/0x650 [ 52.964260] ? putname+0xe1/0x120 [ 52.967709] ? fput+0x2b/0x190 [ 52.970894] ? ksys_mmap_pgoff+0xe0/0x5b0 [ 52.975039] do_group_exit+0x125/0x350 [ 52.978912] __x64_sys_exit_group+0x3a/0x50 [ 52.983255] do_syscall_64+0xf9/0x620 [ 52.987043] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.992213] RIP: 0033:0x43efe8 [ 52.995397] Code: Bad RIP value. [ 52.998744] RSP: 002b:00007ffd89350c48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 53.006433] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043efe8 [ 53.013687] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 53.020940] RBP: 00000000004be7e8 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 53.028192] R10: 0000040000000011 R11: 0000000000000246 R12: 0000000000000001 [ 53.035483] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 53.042736] Modules linked in: [ 53.046808] ---[ end trace 14c8bc5044debe01 ]--- [ 53.051579] RIP: 0010:__unmap_hugepage_range+0x8e4/0xa90 [ 53.057085] Code: 4c 89 ea e8 6e 7b 93 ff 66 90 4c 89 ff e8 14 e4 84 05 e9 59 fc ff ff e8 9a 79 cd ff 0f 0b e8 93 79 cd ff 0f 0b e8 8c 79 cd ff <0f> 0b e8 85 79 cd ff 48 8b 94 24 b0 00 00 00 b9 01 00 00 00 48 89 [ 53.076055] RSP: 0018:ffff8880971efa38 EFLAGS: 00010293 [ 53.081454] RAX: ffff888092e58080 RBX: ffffffff8b6e2b30 RCX: ffffffff819a249c [ 53.088908] RDX: 0000000000000000 RSI: ffffffff819a2b14 RDI: 0000000000000007 [ 53.096259] RBP: ffff888090e81640 R08: ffff888092e58080 R09: fffffbfff16d1ae9 [ 53.103564] R10: fffffbfff16d1ae8 R11: 0000000000000003 R12: 0000000020000000 [ 53.110894] R13: 0000000000003000 R14: 0000000000000000 R15: 0000000000200000 [ 53.118178] FS: 00000000008ab880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 53.126508] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.132515] CR2: 000000000043efbe CR3: 000000008b90c000 CR4: 00000000001406f0 [ 53.139811] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.147106] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.154375] Kernel panic - not syncing: Fatal exception [ 53.161032] Kernel Offset: disabled [ 53.164656] Rebooting in 86400 seconds..