[?25l[?1c7[ ok 8[?25h[?0c. [....] 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. [ 12.488454] audit: type=1400 audit(1514227385.032:6): avc: denied { map } for pid=3132 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 'ci-upstream-mmots-kasan-gce-9,10.128.15.207' (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 syzkaller login: [ 18.665372] audit: type=1400 audit(1514227391.209:7): avc: denied { map } for pid=3146 comm="syzkaller239489" path="/root/syzkaller239489085" dev="sda1" ino=16481 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 [ 18.740229] audit: type=1400 audit(1514227391.209:8): avc: denied { map } for pid=3154 comm="syzkaller239489" path="/dev/usbmon0" dev="devtmpfs" ino=8936 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 24.013347] page:ffffea0006d29500 count:0 mapcount:0 mapping: (null) index:0x0 [ 24.046576] flags: 0x2fffc0000000000() executing program executing program executing program executing program executing program executing program executing program [ 24.071606] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff executing program executing program executing program executing program executing program executing program executing program executing program [ 24.120413] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 executing program executing program executing program executing program executing program [ 24.172429] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.207237] page:ffffea00070dbfc0 count:0 mapcount:0 mapping: (null) index:0x0 [ 24.207246] flags: 0x2fffc0000000000() [ 24.207254] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 24.207262] raw: ffffea0006cb84a0 ffffea0006cee8a0 0000000000000000 0000000000000000 [ 24.207266] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.207393] ------------[ cut here ]------------ [ 24.207397] kernel BUG at ./include/linux/mm.h:844! [ 24.207408] invalid opcode: 0000 [#1] SMP KASAN [ 24.207414] Dumping ftrace buffer: [ 24.207418] (ftrace buffer empty) [ 24.207419] Modules linked in: [ 24.207427] CPU: 1 PID: 3157 Comm: syzkaller239489 Not tainted 4.15.0-rc4-mm1+ #49 [ 24.207430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.207443] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 24.207446] RSP: 0018:ffff8801ca8cf510 EFLAGS: 00010203 [ 24.207451] RAX: 0000000000000000 RBX: 1ffff10039519ea4 RCX: 0000000000000000 [ 24.207455] RDX: 0000000000000000 RSI: 1ffff1003930517b RDI: ffffed0039519e90 [ 24.207459] RBP: ffff8801ca8cf5e8 R08: 1ffff10039519dc6 R09: 0000000000000000 [ 24.207463] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10039519ea8 [ 24.207466] R13: dffffc0000000000 R14: ffff8801ca8cf840 R15: ffffea00070dbfc0 [ 24.207472] FS: 00007f0ad164e700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.207475] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.207478] CR2: 0000000020f70000 CR3: 00000001caa4d005 CR4: 00000000001606e0 [ 24.207484] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.207487] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.207489] Call Trace: [ 24.207500] ? mon_alloc_buff+0x1a0/0x1a0 [ 24.207512] ? finish_fault+0x1b4/0x2a0 [ 24.207519] ? lock_downgrade+0x980/0x980 [ 24.207526] ? do_swap_page+0x2a10/0x2a10 [ 24.207534] __do_fault+0xeb/0x30f [ 24.207542] ? pte_offset_kernel+0xc7/0xc7 [ 24.207553] ? vma_compute_subtree_gap+0x200/0x200 [ 24.207561] ? check_noncircular+0x20/0x20 [ 24.207567] ? _raw_spin_unlock+0x22/0x30 [ 24.207579] __handle_mm_fault+0x1d8f/0x3ce0 [ 24.207588] ? __pmd_alloc+0x4e0/0x4e0 [ 24.207598] ? find_held_lock+0x35/0x1d0 [ 24.207608] ? handle_mm_fault+0x2a0/0x930 [ 24.207615] ? lock_downgrade+0x980/0x980 [ 24.207638] handle_mm_fault+0x38f/0x930 [ 24.207647] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.207654] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.207660] ? find_vma+0x30/0x150 [ 24.207672] __get_user_pages+0x50c/0x15f0 [ 24.207687] ? follow_page_mask+0x17f0/0x17f0 [ 24.207695] ? vma_link+0xe9/0x170 [ 24.207711] ? lock_acquire+0x1d5/0x580 [ 24.207716] ? lock_acquire+0x1d5/0x580 [ 24.207722] ? __mm_populate+0x2c7/0x450 [ 24.207734] ? lock_release+0xa40/0xa40 [ 24.207740] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.207750] ? rcu_note_context_switch+0x710/0x710 [ 24.207762] populate_vma_page_range+0x20e/0x2f0 [ 24.207771] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 24.207776] ? vmacache_find+0x5f/0x280 [ 24.207782] ? vmacache_update+0xfe/0x130 [ 24.207790] ? find_vma+0x30/0x150 [ 24.207797] __mm_populate+0x23a/0x450 [ 24.207808] ? populate_vma_page_range+0x2f0/0x2f0 [ 24.207812] ? down_read_killable+0x180/0x180 [ 24.207822] ? security_mmap_file+0x143/0x180 [ 24.207837] vm_mmap_pgoff+0x241/0x280 [ 24.207849] ? vma_is_stack_for_current+0xa0/0xa0 [ 24.207858] ? lock_release+0xa40/0xa40 [ 24.207875] SyS_mmap_pgoff+0x462/0x5f0 [ 24.207886] ? find_mergeable_anon_vma+0xd0/0xd0 [ 24.207893] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.207901] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.207914] SyS_mmap+0x16/0x20 [ 24.207920] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 24.207925] RIP: 0033:0x44a559 [ 24.207928] RSP: 002b:00007f0ad164dcd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 24.207933] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 000000000044a559 [ 24.207936] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 24.207939] RBP: 00000000006dbc20 R08: 00000000000001d7 R09: 0000000000000000 [ 24.207942] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 24.207944] R13: 00007ffdeb724c5f R14: 00007f0ad164e9c0 R15: 000000000000000b [ 24.207957] Code: 00 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 41 bc 02 00 00 00 eb bb e8 db e1 96 fd 48 c7 c6 80 1f d1 85 4c 89 ff e8 6c a3 c0 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 b7 e1 96 fd [ 24.208061] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801ca8cf510 [ 24.208102] ---[ end trace ecf96f9162fdf871 ]--- [ 24.208107] Kernel panic - not syncing: Fatal exception [ 24.208573] Dumping ftrace buffer: [ 24.208577] (ftrace buffer empty) [ 24.208580] Kernel Offset: disabled [ 24.654619] Rebooting in 86400 seconds..