Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] startpar: service(s) returned failure: restorecond ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 48.720948][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 48.720964][ T26] audit: type=1400 audit(1555615609.868:35): avc: denied { map } for pid=8160 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 Warning: Permanently added '10.128.0.152' (ECDSA) to the list of known hosts. executing program [ 55.247824][ T26] audit: type=1400 audit(1555615616.388:36): avc: denied { map } for pid=8172 comm="syz-executor731" path="/root/syz-executor731004568" 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 [ 55.275711][ T8172] ------------[ cut here ]------------ [ 55.275950][ T26] audit: type=1400 audit(1555615616.388:37): avc: denied { map } for pid=8172 comm="syz-executor731" path="/dev/nullb0" dev="devtmpfs" ino=1842 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=blk_file permissive=1 [ 55.282321][ T8172] generic_make_request: Trying to write to read-only block-device nullb0 (partno 0) [ 55.317327][ T8172] WARNING: CPU: 0 PID: 8172 at block/blk-core.c:801 generic_make_request_checks+0x1c2f/0x2090 [ 55.327567][ T8172] Kernel panic - not syncing: panic_on_warn set ... [ 55.334181][ T8172] CPU: 0 PID: 8172 Comm: syz-executor731 Not tainted 5.1.0-rc5+ #73 [ 55.342158][ T8172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.352212][ T8172] Call Trace: [ 55.355491][ T8172] dump_stack+0x172/0x1f0 [ 55.359824][ T8172] ? generic_make_request_checks+0x1bd0/0x2090 [ 55.365962][ T8172] panic+0x2cb/0x65c [ 55.369836][ T8172] ? __warn_printk+0xf3/0xf3 [ 55.374406][ T8172] ? generic_make_request_checks+0x1c2f/0x2090 [ 55.380537][ T8172] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.386781][ T8172] ? __warn.cold+0x5/0x45 [ 55.391101][ T8172] ? __warn+0xe8/0x1d0 [ 55.395160][ T8172] ? generic_make_request_checks+0x1c2f/0x2090 [ 55.401298][ T8172] __warn.cold+0x20/0x45 [ 55.405547][ T8172] ? vprintk_emit+0x1ce/0x6d0 [ 55.410209][ T8172] ? generic_make_request_checks+0x1c2f/0x2090 [ 55.416353][ T8172] report_bug+0x263/0x2b0 [ 55.420667][ T8172] do_error_trap+0x11b/0x200 [ 55.425252][ T8172] do_invalid_op+0x37/0x50 [ 55.429658][ T8172] ? generic_make_request_checks+0x1c2f/0x2090 [ 55.435799][ T8172] invalid_op+0x14/0x20 [ 55.439962][ T8172] RIP: 0010:generic_make_request_checks+0x1c2f/0x2090 [ 55.446720][ T8172] Code: 00 00 44 8b ab b4 04 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 c3 8a 05 00 48 c7 c7 60 02 a0 87 48 89 c6 44 89 ea e8 4f 96 25 fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 [ 55.466320][ T8172] RSP: 0018:ffff888097eff1e0 EFLAGS: 00010286 [ 55.472368][ T8172] RAX: 0000000000000000 RBX: ffff8880a362a040 RCX: 0000000000000000 [ 55.480332][ T8172] RDX: 0000000000000000 RSI: ffffffff815afcb6 RDI: ffffed1012fdfe2e [ 55.488379][ T8172] RBP: ffff888097eff2e0 R08: ffff888090d2c540 R09: ffffed1015d05011 [ 55.496436][ T8172] R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffff8880a95d18c8 [ 55.504394][ T8172] R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a95d18c0 [ 55.512377][ T8172] ? vprintk_func+0x86/0x189 [ 55.516967][ T8172] ? trace_event_raw_event_block_rq_requeue+0x640/0x640 [ 55.523897][ T8172] generic_make_request+0x24c/0x12d0 [ 55.529165][ T8172] ? find_held_lock+0x35/0x130 [ 55.533914][ T8172] ? bio_associate_blkg_from_css+0x4e5/0x990 [ 55.539881][ T8172] ? blk_queue_enter+0xe90/0xe90 [ 55.544819][ T8172] ? lock_downgrade+0x880/0x880 [ 55.549649][ T8172] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.555872][ T8172] submit_bio+0xba/0x480 [ 55.560153][ T8172] ? submit_bio+0xba/0x480 [ 55.564551][ T8172] ? generic_make_request+0x12d0/0x12d0 [ 55.570078][ T8172] ? bio_reset+0x3b0/0x3b0 [ 55.574611][ T8172] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 55.580319][ T8172] ? guard_bio_eod+0x295/0x6e0 [ 55.585062][ T8172] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 55.590758][ T8172] ? wbc_account_io+0x17e/0x2a0 [ 55.595592][ T8172] submit_bh_wbc+0x5f7/0x7f0 [ 55.600169][ T8172] __block_write_full_page+0x771/0x1020 [ 55.605690][ T8172] ? check_disk_change+0x140/0x140 [ 55.610791][ T8172] block_write_full_page+0x21f/0x270 [ 55.616058][ T8172] ? check_disk_change+0x140/0x140 [ 55.621150][ T8172] blkdev_writepage+0x25/0x30 [ 55.625831][ T8172] __writepage+0x67/0xe0 [ 55.630069][ T8172] write_cache_pages+0x8af/0x1560 [ 55.635085][ T8172] ? __wb_update_bandwidth+0x670/0x670 [ 55.640530][ T8172] ? clear_page_dirty_for_io+0xff0/0xff0 [ 55.646165][ T8172] ? _raw_spin_unlock_irq+0x28/0x90 [ 55.651350][ T8172] ? finish_task_switch+0x146/0x780 [ 55.656528][ T8172] ? _raw_spin_unlock_irq+0x28/0x90 [ 55.661729][ T8172] ? lockdep_hardirqs_on+0x418/0x5d0 [ 55.667087][ T8172] ? trace_hardirqs_on+0x67/0x230 [ 55.672097][ T8172] ? kasan_check_read+0x11/0x20 [ 55.677137][ T8172] generic_writepages+0xed/0x160 [ 55.682075][ T8172] ? write_cache_pages+0x1560/0x1560 [ 55.687348][ T8172] ? __lock_acquire+0x548/0x3fb0 [ 55.692268][ T8172] ? mark_held_locks+0xf0/0xf0 [ 55.697025][ T8172] ? wbc_attach_and_unlock_inode+0x51a/0x930 [ 55.704004][ T8172] ? find_held_lock+0x35/0x130 [ 55.708784][ T8172] ? blkdev_readpages+0x40/0x40 [ 55.713706][ T8172] blkdev_writepages+0x1e/0x30 [ 55.718483][ T8172] do_writepages+0xfc/0x2a0 [ 55.723223][ T8172] ? page_writeback_cpu_online+0x20/0x20 [ 55.728841][ T8172] ? kasan_check_read+0x11/0x20 [ 55.733695][ T8172] ? do_raw_spin_unlock+0x57/0x270 [ 55.738795][ T8172] ? _raw_spin_unlock+0x2d/0x50 [ 55.744358][ T8172] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.750608][ T8172] ? wbc_attach_and_unlock_inode+0x5c4/0x930 [ 55.756663][ T8172] __filemap_fdatawrite_range+0x26d/0x340 [ 55.762367][ T8172] ? delete_from_page_cache_batch+0x1100/0x1100 [ 55.768595][ T8172] ? fsnotify+0x7e0/0xbc0 [ 55.772910][ T8172] filemap_write_and_wait+0x47/0xd0 [ 55.778182][ T8172] __blkdev_put+0x204/0x810 [ 55.782779][ T8172] ? bd_set_size+0xb0/0xb0 [ 55.787179][ T8172] ? wait_for_completion+0x440/0x440 [ 55.792459][ T8172] blkdev_put+0x98/0x560 [ 55.796707][ T8172] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 55.803088][ T8172] ? blkdev_put+0x560/0x560 [ 55.807593][ T8172] blkdev_close+0x8b/0xb0 [ 55.812258][ T8172] __fput+0x2e5/0x8d0 [ 55.816244][ T8172] ____fput+0x16/0x20 [ 55.820219][ T8172] task_work_run+0x14a/0x1c0 [ 55.824797][ T8172] do_exit+0x90a/0x2fa0 [ 55.828934][ T8172] ? __do_page_fault+0x623/0xda0 [ 55.834084][ T8172] ? mm_update_next_owner+0x640/0x640 [ 55.839442][ T8172] ? tomoyo_file_ioctl+0x23/0x30 [ 55.844359][ T8172] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.850598][ T8172] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.856044][ T8172] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.861488][ T8172] do_group_exit+0x135/0x370 [ 55.866079][ T8172] __x64_sys_exit_group+0x44/0x50 [ 55.871346][ T8172] do_syscall_64+0x103/0x610 [ 55.875917][ T8172] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.881881][ T8172] RIP: 0033:0x43edf8 [ 55.885868][ T8172] Code: Bad RIP value. [ 55.889913][ T8172] RSP: 002b:00007ffd69268248 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 55.898391][ T8172] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043edf8 [ 55.906526][ T8172] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 55.914476][ T8172] RBP: 00000000004be608 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 55.922617][ T8172] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000001 [ 55.930857][ T8172] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 55.939739][ T8172] Kernel Offset: disabled [ 55.944133][ T8172] Rebooting in 86400 seconds..