[info] Using makefile-style concurrent boot in runlevel 2. [ 26.818301] audit: type=1800 audit(1543254762.772:21): pid=5833 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.643819] sshd (5971) used greatest stack depth: 15632 bytes left Warning: Permanently added '10.128.0.119' (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 [ 40.906056] ------------[ cut here ]------------ executing program [ 40.927022] generic_make_request: Trying to write to read-only block-device loop0 (partno 0) [ 40.941660] WARNING: CPU: 0 PID: 6006 at block/blk-core.c:973 generic_make_request_checks+0x1302/0x2660 [ 40.951202] Kernel panic - not syncing: panic_on_warn set ... [ 40.957096] CPU: 0 PID: 6006 Comm: syz-executor153 Not tainted 4.20.0-rc1-next-20181109+ #110 [ 40.965769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.975137] Call Trace: [ 40.977737] dump_stack+0x244/0x39d [ 40.981396] ? dump_stack_print_info.cold.1+0x20/0x20 [ 40.986602] panic+0x2ad/0x55c [ 40.989805] ? add_taint.cold.5+0x16/0x16 [ 40.993972] ? __warn.cold.8+0x5/0x45 [ 40.997794] ? __warn+0xe8/0x1d0 [ 41.001174] ? generic_make_request_checks+0x1302/0x2660 [ 41.006637] __warn.cold.8+0x20/0x45 [ 41.010365] ? rcu_softirq_qs+0x20/0x20 [ 41.014358] ? generic_make_request_checks+0x1302/0x2660 [ 41.019951] report_bug+0x254/0x2d0 [ 41.023574] do_error_trap+0x11b/0x200 [ 41.027447] do_invalid_op+0x36/0x40 [ 41.031146] ? generic_make_request_checks+0x1302/0x2660 [ 41.036583] invalid_op+0x14/0x20 [ 41.040019] RIP: 0010:generic_make_request_checks+0x1302/0x2660 [ 41.046060] Code: 8b ad e4 04 00 00 4c 8d b5 78 ff ff ff 48 89 df 4c 89 f6 e8 40 9e 06 00 48 c7 c7 00 72 5f 88 48 89 c6 44 89 ea e8 5e 0c ce fd <0f> 0b e9 b2 f0 ff ff e8 d2 d8 04 fe 4d 8d b7 d0 00 00 00 48 b8 00 [ 41.065062] RSP: 0018:ffff8801b7cc6040 EFLAGS: 00010282 [ 41.070413] RAX: 0000000000000000 RBX: ffff8801c1eafe40 RCX: 0000000000000000 [ 41.077678] RDX: 0000000000000000 RSI: ffffffff8165ba15 RDI: 0000000000000005 [ 41.085020] RBP: ffff8801b7cc6340 R08: ffff8801cdff0240 R09: ffffed003b5c5020 [ 41.092280] R10: ffffed003b5c5020 R11: ffff8801dae28107 R12: ffff8801c1eafe48 [ 41.099682] R13: 0000000000000000 R14: ffff8801b7cc62b8 R15: ffff8801d1958fe8 [ 41.106950] ? vprintk_func+0x85/0x181 [ 41.110831] ? trace_event_raw_event_block_rq_requeue+0x6f0/0x6f0 [ 41.117058] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 41.122154] ? depot_save_stack+0x292/0x470 [ 41.126466] ? __lock_acquire+0x62f/0x4c20 [ 41.130696] ? save_stack+0x43/0xd0 [ 41.134302] ? kasan_kmalloc+0xc7/0xe0 [ 41.138184] ? kasan_slab_alloc+0x12/0x20 [ 41.142310] ? kmem_cache_alloc+0x12e/0x730 [ 41.146626] ? mempool_alloc_slab+0x44/0x60 [ 41.151053] ? mempool_alloc+0x193/0x4a0 [ 41.155100] ? bio_alloc_bioset+0x3a8/0x700 [ 41.159540] ? submit_bh_wbc+0x14b/0x790 [ 41.163587] ? __block_write_full_page+0x93b/0x14a0 [ 41.168582] ? block_write_full_page+0x221/0x270 [ 41.173317] ? blkdev_writepage+0x24/0x30 [ 41.177456] ? mark_held_locks+0x130/0x130 [ 41.181799] ? ____fput+0x15/0x20 [ 41.185252] ? task_work_run+0x1e8/0x2a0 [ 41.189304] ? do_exit+0x1a48/0x2620 [ 41.193010] ? do_group_exit+0x177/0x440 [ 41.197050] ? get_signal+0x8a8/0x1970 [ 41.200920] ? do_signal+0x9c/0x21c0 [ 41.204624] ? exit_to_usermode_loop+0x2e5/0x380 [ 41.209367] ? do_syscall_64+0x6be/0x820 [ 41.213495] ? graph_lock+0x270/0x270 [ 41.217407] ? check_preemption_disabled+0x48/0x280 [ 41.222438] generic_make_request+0x2c7/0x1890 [ 41.227021] ? blk_queue_enter+0x1200/0x1200 [ 41.231459] ? rcu_read_lock_sched_held+0x14f/0x180 [ 41.236473] ? graph_lock+0x270/0x270 [ 41.240273] ? _raw_spin_unlock_irq+0x27/0x80 [ 41.244746] ? graph_lock+0x270/0x270 [ 41.248530] ? mempool_alloc_slab+0x44/0x60 [ 41.252846] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.258373] ? check_preemption_disabled+0x48/0x280 [ 41.263516] ? find_held_lock+0x36/0x1c0 [ 41.267568] ? guard_bio_eod+0x1f4/0x630 [ 41.271610] ? lock_downgrade+0x900/0x900 [ 41.275737] ? check_preemption_disabled+0x48/0x280 [ 41.280745] submit_bio+0xba/0x460 [ 41.284272] ? submit_bio+0xba/0x460 [ 41.288040] ? generic_make_request+0x1890/0x1890 [ 41.292875] ? __bio_add_page+0x134/0x290 [ 41.297014] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 41.302018] ? guard_bio_eod+0x2bb/0x630 [ 41.306060] submit_bh_wbc+0x5de/0x790 [ 41.309933] __block_write_full_page+0x93b/0x14a0 [ 41.314764] ? I_BDEV+0x20/0x20 [ 41.318036] ? bh_uptodate_or_lock+0x160/0x160 [ 41.322611] ? submit_bh_wbc+0x790/0x790 [ 41.326672] ? trace_hardirqs_on+0x310/0x310 [ 41.331061] ? trace_hardirqs_on+0xbd/0x310 [ 41.335367] ? tag_pages_for_writeback+0x5ff/0x7d0 [ 41.340284] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.345032] ? retint_kernel+0x2d/0x2d [ 41.349034] ? block_write_full_page+0xbb/0x270 [ 41.353693] block_write_full_page+0x221/0x270 [ 41.358256] ? I_BDEV+0x20/0x20 [ 41.361522] blkdev_writepage+0x24/0x30 [ 41.365518] __writepage+0x69/0xe0 [ 41.369180] write_cache_pages+0xc8c/0x1e20 [ 41.373509] ? __wb_update_bandwidth+0x680/0x680 [ 41.378273] ? clear_page_dirty_for_io+0x1900/0x1900 [ 41.383399] ? __lock_acquire+0x62f/0x4c20 [ 41.387630] ? __lock_acquire+0x62f/0x4c20 [ 41.391864] ? mark_held_locks+0x130/0x130 [ 41.396230] ? mark_held_locks+0x130/0x130 [ 41.400452] ? graph_lock+0x270/0x270 [ 41.404242] ? graph_lock+0x270/0x270 [ 41.408058] ? lock_acquire+0x1ed/0x520 [ 41.412032] ? __blkdev_put+0xc2/0x830 [ 41.415923] ? lock_release+0xa10/0xa10 [ 41.419894] ? perf_trace_sched_process_exec+0x860/0x860 [ 41.425331] ? find_held_lock+0x36/0x1c0 [ 41.429381] ? graph_lock+0x270/0x270 [ 41.433181] ? __mutex_lock+0x85e/0x16f0 [ 41.437233] ? find_held_lock+0x36/0x1c0 [ 41.441281] ? lock_downgrade+0x900/0x900 [ 41.445419] generic_writepages+0xda/0x150 [ 41.449750] ? write_cache_pages+0x1e20/0x1e20 [ 41.454324] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 41.459845] ? wbc_attach_and_unlock_inode+0x675/0xa30 [ 41.465218] blkdev_writepages+0x1d/0x30 [ 41.469264] ? blkdev_readpages+0x40/0x40 [ 41.473486] do_writepages+0x9a/0x1a0 [ 41.477297] __filemap_fdatawrite_range+0x364/0x4a0 [ 41.482301] ? delete_from_page_cache_batch+0x1630/0x1630 [ 41.487910] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 41.492837] filemap_write_and_wait+0x44/0xc0 [ 41.497335] __blkdev_put+0x202/0x830 [ 41.501127] ? bd_set_size+0x370/0x370 [ 41.505020] ? do_raw_spin_trylock+0x270/0x270 [ 41.509588] ? fsnotify_first_mark+0x350/0x350 [ 41.514163] blkdev_put+0x98/0x540 [ 41.517769] blkdev_close+0x8b/0xb0 [ 41.521409] __fput+0x3bc/0xa70 [ 41.524679] ? blkdev_put+0x540/0x540 [ 41.528480] ? get_max_files+0x20/0x20 [ 41.532473] ? trace_hardirqs_on+0xbd/0x310 [ 41.536781] ? kasan_check_read+0x11/0x20 [ 41.540909] ? task_work_run+0x1af/0x2a0 [ 41.544957] ? trace_hardirqs_off_caller+0x300/0x300 [ 41.550055] ____fput+0x15/0x20 [ 41.553328] task_work_run+0x1e8/0x2a0 [ 41.557204] ? task_work_cancel+0x240/0x240 [ 41.561511] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 41.567032] ? switch_task_namespaces+0x9d/0xd0 [ 41.571690] do_exit+0x1a48/0x2620 [ 41.575212] ? do_raw_spin_unlock+0xa7/0x330 [ 41.579607] ? mm_update_next_owner+0x990/0x990 [ 41.584293] ? graph_lock+0x270/0x270 [ 41.588078] ? find_held_lock+0x36/0x1c0 [ 41.592126] ? __lock_acquire+0x62f/0x4c20 [ 41.596343] ? lock_downgrade+0x900/0x900 [ 41.600483] ? mark_held_locks+0x130/0x130 [ 41.604699] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 41.609875] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 41.615208] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 41.620727] ? futex_wait+0x5ec/0xa50 [ 41.624530] ? futex_wait_setup+0x3e0/0x3e0 [ 41.628926] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 41.634024] ? futex_wake+0x304/0x760 [ 41.637811] ? graph_lock+0x270/0x270 [ 41.641598] ? memset+0x31/0x40 [ 41.644871] ? find_held_lock+0x36/0x1c0 [ 41.648931] ? get_signal+0x953/0x1970 [ 41.652808] ? _raw_spin_unlock_irq+0x27/0x80 [ 41.657431] ? _raw_spin_unlock_irq+0x27/0x80 [ 41.661946] do_group_exit+0x177/0x440 [ 41.665843] ? trace_hardirqs_off_caller+0x300/0x300 [ 41.671101] ? __ia32_sys_exit+0x50/0x50 [ 41.675160] get_signal+0x8a8/0x1970 [ 41.678936] ? ptrace_notify+0x130/0x130 [ 41.683004] ? __sb_end_write+0xd9/0x110 [ 41.687252] ? pipe_write+0xb64/0xec0 [ 41.691056] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 41.696583] ? __vfs_write+0x121/0x9f0 [ 41.700466] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.706016] do_signal+0x9c/0x21c0 [ 41.709543] ? apparmor_path_rmdir+0x30/0x30 [ 41.713947] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 41.719484] ? fsnotify_first_mark+0x350/0x350 [ 41.724049] ? setup_sigcontext+0x7d0/0x7d0 [ 41.728353] ? fsnotify+0xef0/0xef0 [ 41.731978] ? apparmor_file_permission+0x24/0x30 [ 41.736812] ? exit_to_usermode_loop+0x8c/0x380 [ 41.741462] ? exit_to_usermode_loop+0x8c/0x380 [ 41.746121] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 41.750691] ? trace_hardirqs_on+0xbd/0x310 [ 41.755028] ? do_syscall_64+0x6be/0x820 [ 41.759193] ? __x64_sys_futex+0x47f/0x6a0 [ 41.763442] exit_to_usermode_loop+0x2e5/0x380 [ 41.768010] ? __bpf_trace_sys_exit+0x30/0x30 [ 41.772625] do_syscall_64+0x6be/0x820 [ 41.776519] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.781865] ? syscall_return_slowpath+0x5e0/0x5e0 [ 41.786780] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.791862] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 41.796869] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 41.803531] ? __switch_to_asm+0x40/0x70 [ 41.807587] ? __switch_to_asm+0x34/0x70 [ 41.811632] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.816484] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.821665] RIP: 0033:0x44a4f9 [ 41.824858] Code: Bad RIP value. [ 41.828202] RSP: 002b:00007f61b837ecf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 41.835890] RAX: fffffffffffffe00 RBX: 00000000006dbc78 RCX: 000000000044a4f9 [ 41.843142] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dbc78 [ 41.850494] RBP: 00000000006dbc70 R08: 0000000000000000 R09: 0000000000000000 [ 41.857746] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc7c [ 41.865095] R13: 00007ffcf9c9f18f R14: 00007f61b837f9c0 R15: 00000000006dbd6c [ 41.873498] Kernel Offset: disabled [ 41.877173] Rebooting in 86400 seconds..