[....] Starting file context mai[ 31.213823] kauditd_printk_skb: 9 callbacks suppressed ntaining daemon:[ 31.213833] audit: type=1800 audit(1543246841.159:33): pid=5915 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 restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Sh[ 31.249394] audit: type=1800 audit(1543246841.159:34): pid=5915 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 ell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 31.545594] audit: type=1400 audit(1543246841.489:35): avc: denied { map } for pid=6090 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 '10.128.10.11' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 41.976060] audit: type=1400 audit(1543246851.919:36): avc: denied { map } for pid=6105 comm="syz-executor408" path="/root/syz-executor408073982" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 42.005338] audit: type=1400 audit(1543246851.919:37): avc: denied { map } for pid=6113 comm="syz-executor408" path="/dev/loop0" dev="devtmpfs" ino=14872 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:fixed_disk_device_t:s0 tclass=blk_file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.710661] ------------[ cut here ]------------ [ 42.725400] generic_make_request: Trying to write to read-only block-device loop0 (partno 0) [ 42.734991] WARNING: CPU: 1 PID: 6149 at block/blk-core.c:2170 generic_make_request_checks+0xef9/0x26c0 [ 42.744637] Kernel panic - not syncing: panic_on_warn set ... [ 42.750531] CPU: 1 PID: 6149 Comm: syz-executor408 Not tainted 4.20.0-rc4+ #130 [ 42.757989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.767353] Call Trace: [ 42.769971] dump_stack+0x244/0x39d [ 42.773614] ? dump_stack_print_info.cold.1+0x20/0x20 [ 42.778823] panic+0x2ad/0x55c [ 42.782029] ? add_taint.cold.5+0x16/0x16 [ 42.786182] ? __warn.cold.8+0x5/0x45 [ 42.789972] ? __warn+0xe8/0x1d0 [ 42.793330] ? generic_make_request_checks+0xef9/0x26c0 [ 42.798689] __warn.cold.8+0x20/0x45 [ 42.802523] ? rcu_softirq_qs+0x20/0x20 [ 42.806511] ? generic_make_request_checks+0xef9/0x26c0 [ 42.811885] report_bug+0x254/0x2d0 [ 42.815521] do_error_trap+0x11b/0x200 [ 42.819418] do_invalid_op+0x36/0x40 [ 42.823148] ? generic_make_request_checks+0xef9/0x26c0 [ 42.828522] invalid_op+0x14/0x20 [ 42.831983] RIP: 0010:generic_make_request_checks+0xef9/0x26c0 [ 42.838181] Code: 8b ad e4 04 00 00 4c 8d b5 78 ff ff ff 48 89 df 4c 89 f6 e8 99 93 07 00 48 c7 c7 20 2b 5f 88 48 89 c6 44 89 ea e8 57 d0 cf fd <0f> 0b e9 c1 f4 ff ff e8 fb 6f 06 fe e8 a6 47 f0 fd e8 f1 6f 06 fe [ 42.857088] RSP: 0018:ffff8881ce6be010 EFLAGS: 00010286 [ 42.862464] RAX: 0000000000000000 RBX: ffff8881d2f73200 RCX: 0000000000000000 [ 42.869754] RDX: 0000000000000000 RSI: ffffffff8165eaf5 RDI: 0000000000000005 [ 42.877037] RBP: ffff8881ce6be310 R08: ffff8881ce8f2100 R09: ffffed103b5e5020 [ 42.884311] R10: ffffed103b5e5020 R11: ffff8881daf28107 R12: ffff8881d2f73208 [ 42.891579] R13: 0000000000000000 R14: ffff8881ce6be288 R15: ffff8881d1bab000 [ 42.898879] ? vprintk_func+0x85/0x181 [ 42.902811] ? trace_event_raw_event_block_rq_requeue+0x6d0/0x6d0 [ 42.909062] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 42.914181] ? depot_save_stack+0x292/0x470 [ 42.918554] ? __lock_acquire+0x62f/0x4c20 [ 42.922803] ? save_stack+0x43/0xd0 [ 42.926444] ? kasan_kmalloc+0xc7/0xe0 [ 42.930341] ? kasan_slab_alloc+0x12/0x20 [ 42.934539] ? kmem_cache_alloc+0x12e/0x730 [ 42.938877] ? mempool_alloc_slab+0x44/0x60 [ 42.943312] ? mempool_alloc+0x193/0x4a0 [ 42.947380] ? bio_alloc_bioset+0x3a8/0x700 [ 42.951712] ? submit_bh_wbc+0x14b/0x790 [ 42.955788] ? __block_write_full_page+0x93b/0x14a0 [ 42.960831] ? block_write_full_page+0x221/0x270 [ 42.965591] ? blkdev_writepage+0x24/0x30 [ 42.969756] ? mark_held_locks+0x130/0x130 [ 42.974004] ? ____fput+0x15/0x20 [ 42.977477] ? task_work_run+0x1e8/0x2a0 [ 42.981561] ? do_exit+0x1ad6/0x26d0 [ 42.985281] ? do_group_exit+0x177/0x440 [ 42.989360] ? get_signal+0x8b0/0x1980 [ 42.993255] ? do_signal+0x9c/0x21c0 [ 42.996982] ? exit_to_usermode_loop+0x2e5/0x380 [ 43.001760] ? do_syscall_64+0x6be/0x820 [ 43.005835] ? zap_class+0x640/0x640 [ 43.009568] ? check_preemption_disabled+0x48/0x280 [ 43.014605] generic_make_request+0x2c7/0x18a0 [ 43.019208] ? blk_get_request+0x800/0x800 [ 43.023456] ? rcu_read_lock_sched_held+0x14f/0x180 [ 43.028484] ? zap_class+0x640/0x640 [ 43.032209] ? zap_class+0x640/0x640 [ 43.035936] ? mempool_alloc_slab+0x44/0x60 [ 43.040276] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.045824] ? check_preemption_disabled+0x48/0x280 [ 43.050861] ? find_held_lock+0x36/0x1c0 [ 43.054948] ? guard_bio_eod+0x1f4/0x630 [ 43.059028] ? lock_downgrade+0x900/0x900 [ 43.063182] ? check_preemption_disabled+0x48/0x280 [ 43.068193] submit_bio+0xba/0x460 [ 43.071733] ? submit_bio+0xba/0x460 [ 43.075455] ? rcu_softirq_qs+0x20/0x20 [ 43.079447] ? generic_make_request+0x18a0/0x18a0 [ 43.084313] ? __bio_add_page+0x134/0x290 [ 43.088487] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 43.093516] ? guard_bio_eod+0x2bb/0x630 [ 43.097593] submit_bh_wbc+0x5de/0x790 [ 43.101503] __block_write_full_page+0x93b/0x14a0 [ 43.106359] ? I_BDEV+0x20/0x20 [ 43.109655] ? bh_uptodate_or_lock+0x160/0x160 [ 43.114243] ? submit_bh_wbc+0x790/0x790 [ 43.118296] ? trace_hardirqs_on+0xbd/0x310 [ 43.122612] ? tag_pages_for_writeback+0x5ff/0x7d0 [ 43.127540] ? zap_class+0x640/0x640 [ 43.131246] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.136770] ? check_preemption_disabled+0x48/0x280 [ 43.141784] block_write_full_page+0x221/0x270 [ 43.146353] ? I_BDEV+0x20/0x20 [ 43.149620] blkdev_writepage+0x24/0x30 [ 43.153587] __writepage+0x69/0xe0 [ 43.157113] write_cache_pages+0xc91/0x1e20 [ 43.161425] ? __wb_update_bandwidth+0x680/0x680 [ 43.166173] ? clear_page_dirty_for_io+0x1900/0x1900 [ 43.171261] ? _raw_spin_unlock_irq+0x60/0x80 [ 43.175740] ? finish_task_switch+0x1f4/0x910 [ 43.180233] ? finish_task_switch+0x1b4/0x910 [ 43.184733] ? __switch_to_asm+0x34/0x70 [ 43.188779] ? __switch_to_asm+0x40/0x70 [ 43.192838] ? __switch_to_asm+0x34/0x70 [ 43.196894] ? __switch_to_asm+0x40/0x70 [ 43.200951] ? __switch_to_asm+0x34/0x70 [ 43.205006] ? __switch_to_asm+0x34/0x70 [ 43.209055] ? __switch_to_asm+0x34/0x70 [ 43.213103] ? __switch_to_asm+0x40/0x70 [ 43.217148] ? __switch_to_asm+0x34/0x70 [ 43.221200] ? mark_held_locks+0x130/0x130 [ 43.225540] ? lock_acquire+0x1ed/0x520 [ 43.229516] ? __blkdev_put+0xc2/0x830 [ 43.233408] ? lock_release+0xa00/0xa00 [ 43.237371] ? perf_trace_sched_process_exec+0x860/0x860 [ 43.242983] ? zap_class+0x640/0x640 [ 43.246702] ? __mutex_lock+0x85e/0x16f0 [ 43.250759] ? blk_start_plug+0xcc/0x370 [ 43.254804] ? find_held_lock+0x36/0x1c0 [ 43.258850] ? blk_lld_busy+0x70/0x70 [ 43.262645] ? lock_downgrade+0x900/0x900 [ 43.266779] ? zap_class+0x640/0x640 [ 43.270490] ? kasan_check_read+0x11/0x20 [ 43.274637] generic_writepages+0xda/0x150 [ 43.278855] ? write_cache_pages+0x1e20/0x1e20 [ 43.283427] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.288964] blkdev_writepages+0x1d/0x30 [ 43.293022] ? blkdev_readpages+0x40/0x40 [ 43.297156] do_writepages+0x9a/0x1a0 [ 43.300949] __filemap_fdatawrite_range+0x364/0x4a0 [ 43.305950] ? delete_from_page_cache_batch+0x1640/0x1640 [ 43.311480] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 43.316398] filemap_write_and_wait+0x44/0xc0 [ 43.320878] __blkdev_put+0x202/0x830 [ 43.324670] ? bd_set_size+0x370/0x370 [ 43.328544] ? do_raw_spin_trylock+0x270/0x270 [ 43.333286] ? fsnotify_first_mark+0x350/0x350 [ 43.338033] blkdev_put+0x98/0x540 [ 43.341569] ? blkdev_put+0x540/0x540 [ 43.345357] blkdev_close+0x8b/0xb0 [ 43.348986] __fput+0x385/0xa30 [ 43.352260] ? get_max_files+0x20/0x20 [ 43.356138] ? trace_hardirqs_on+0xbd/0x310 [ 43.360632] ? kasan_check_read+0x11/0x20 [ 43.364776] ? task_work_run+0x1af/0x2a0 [ 43.368826] ? trace_hardirqs_off_caller+0x310/0x310 [ 43.373921] ____fput+0x15/0x20 [ 43.377188] task_work_run+0x1e8/0x2a0 [ 43.381064] ? task_work_cancel+0x240/0x240 [ 43.385377] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 43.390897] ? switch_task_namespaces+0x9d/0xd0 [ 43.395554] do_exit+0x1ad6/0x26d0 [ 43.399095] ? mm_update_next_owner+0x990/0x990 [ 43.403749] ? print_usage_bug+0xc0/0xc0 [ 43.407797] ? zap_class+0x640/0x640 [ 43.411495] ? find_held_lock+0x36/0x1c0 [ 43.415545] ? __lock_acquire+0x62f/0x4c20 [ 43.419771] ? lock_downgrade+0x900/0x900 [ 43.423908] ? mark_held_locks+0x130/0x130 [ 43.428131] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 43.433309] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 43.438395] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.443915] ? futex_wait+0x5ec/0xa50 [ 43.447702] ? futex_wait_setup+0x3e0/0x3e0 [ 43.452012] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 43.457099] ? futex_wake+0x304/0x760 [ 43.460889] ? zap_class+0x640/0x640 [ 43.464593] ? memset+0x31/0x40 [ 43.467866] ? find_held_lock+0x36/0x1c0 [ 43.471916] ? get_signal+0x95b/0x1980 [ 43.475788] ? _raw_spin_unlock_irq+0x27/0x80 [ 43.480266] ? _raw_spin_unlock_irq+0x27/0x80 [ 43.484746] do_group_exit+0x177/0x440 [ 43.488622] ? trace_hardirqs_off_caller+0x310/0x310 [ 43.493713] ? __ia32_sys_exit+0x50/0x50 [ 43.497772] get_signal+0x8b0/0x1980 [ 43.501481] ? ptrace_notify+0x130/0x130 [ 43.505531] ? __sb_end_write+0xd9/0x110 [ 43.509578] ? pipe_write+0xb64/0xec0 [ 43.513373] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.518899] ? __vfs_write+0x121/0x9f0 [ 43.522775] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.528306] do_signal+0x9c/0x21c0 [ 43.531836] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 43.537368] ? fsnotify_first_mark+0x350/0x350 [ 43.541935] ? setup_sigcontext+0x7d0/0x7d0 [ 43.546239] ? fsnotify+0xef0/0xef0 [ 43.549853] ? exit_to_usermode_loop+0x8c/0x380 [ 43.554512] ? exit_to_usermode_loop+0x8c/0x380 [ 43.559183] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 43.563752] ? trace_hardirqs_on+0xbd/0x310 [ 43.568408] ? do_syscall_64+0x6be/0x820 [ 43.572457] ? __x64_sys_futex+0x47f/0x6a0 [ 43.576678] exit_to_usermode_loop+0x2e5/0x380 [ 43.581245] ? __bpf_trace_sys_exit+0x30/0x30 [ 43.585724] do_syscall_64+0x6be/0x820 [ 43.589598] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.595123] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.600052] ? trace_hardirqs_on_caller+0x310/0x310 [ 43.605157] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.610199] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 43.616873] ? __switch_to_asm+0x40/0x70 [ 43.620925] ? __switch_to_asm+0x34/0x70 [ 43.624986] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.629820] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.635088] RIP: 0033:0x44a4f9 [ 43.638276] Code: 53 5f 52 45 54 5f 44 45 46 45 52 5f 43 4f 4d 4d 49 54 20 2d 20 69 67 6e 6f 72 65 64 0a 00 00 00 00 6f 75 74 70 75 74 20 70 6c <75> 67 69 6e 20 65 72 72 6f 72 3a 20 65 6e 64 54 72 61 6e 73 61 63 [ 43.657175] RSP: 002b:00007f9bb3f9ccf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 43.665001] RAX: fffffffffffffe00 RBX: 00000000006dbc78 RCX: 000000000044a4f9 [ 43.672258] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc78 [ 43.679510] RBP: 00000000006dbc70 R08: 0000000000000000 R09: 0000000000000000 [ 43.686854] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc7c [ 43.694114] R13: 00007ffc7774b0df R14: 00007f9bb3f9d9c0 R15: 00000000006dbd6c [ 43.702827] Kernel Offset: disabled [ 43.706533] Rebooting in 86400 seconds..