[ 34.802644][ T27] audit: type=1800 audit(1550053146.170:28): pid=7410 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 35.774618][ T27] audit: type=1800 audit(1550053147.150:29): pid=7410 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 35.794688][ T27] audit: type=1800 audit(1550053147.150:30): pid=7410 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.199' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.364084][ T7586] BUG: Bad page state in process udevd pfn:472f0 [ 57.364091][ T7585] BUG: Bad page state in process loop0 pfn:36d60 [ 57.364135][ T7585] page:ffffea0000db5800 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0xd [ 57.364150][ T7585] shmem_aops [ 57.364155][ T7586] name:"memfd:" [ 57.370710][ T7586] page:ffffea00011cbc00 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0xf [ 57.370729][ T7586] shmem_aops [ 57.370734][ T7585] name:"memfd:" [ 57.378041][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 57.386359][ T7586] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 57.389546][ T7585] raw: 01fffc000008000c ffffea0000b056c8 ffff88800e71f478 ffff88800df2ad40 [ 57.393110][ T7586] raw: 01fffc000008000c ffffea0000ac4f08 ffff8880a85af890 ffff88800df2ad40 [ 57.401920][ T7585] raw: 000000000000000d 0000000000000000 00000000ffffffff 0000000000000000 [ 57.401925][ T7585] page dumped because: non-NULL mapping [ 57.401928][ T7585] Modules linked in: [ 57.401944][ T7585] CPU: 0 PID: 7585 Comm: loop0 Not tainted 5.0.0-rc6-next-20190213 #34 [ 57.401950][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.401954][ T7585] Call Trace: [ 57.401972][ T7585] dump_stack+0x172/0x1f0 [ 57.401990][ T7585] bad_page.cold+0xda/0xff [ 57.402002][ T7585] ? si_mem_available+0x320/0x320 [ 57.402015][ T7585] ? __lock_is_held+0xb6/0x140 [ 57.402028][ T7585] ? check_preemption_disabled+0x48/0x290 [ 57.402046][ T7585] free_pages_check_bad+0x142/0x1a0 [ 57.402061][ T7585] free_unref_page_list+0x31d/0xc40 [ 57.402081][ T7585] release_pages+0x60d/0x1940 [ 57.405378][ T7586] raw: 000000000000000f 0000000000000000 00000000ffffffff 0000000000000000 [ 57.408885][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 57.415626][ T7586] page dumped because: non-NULL mapping [ 57.422371][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 57.430940][ T7586] Modules linked in: [ 57.439482][ T7585] ? kasan_check_read+0x11/0x20 [ 57.439500][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 57.439518][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 57.561558][ T7585] activate_page+0x52c/0x830 [ 57.566145][ T7585] mark_page_accessed+0x44b/0x1140 [ 57.571250][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 57.576376][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 57.582517][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 57.588313][ T7585] ? current_time+0x6b/0x140 [ 57.592903][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 57.598706][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.604938][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 57.610906][ T7585] ? timespec64_trunc+0xf0/0x180 [ 57.615839][ T7585] shmem_write_begin+0x105/0x1e0 [ 57.620771][ T7585] generic_perform_write+0x231/0x530 [ 57.626056][ T7585] ? page_endio+0x780/0x780 [ 57.630549][ T7585] ? current_time+0x140/0x140 [ 57.635221][ T7585] ? lock_acquire+0x16f/0x3f0 [ 57.639896][ T7585] __generic_file_write_iter+0x25e/0x630 [ 57.645516][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 57.651231][ T7585] generic_file_write_iter+0x360/0x610 [ 57.656684][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 57.662482][ T7585] ? __lock_acquire+0x54b/0x4790 [ 57.667422][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 57.672616][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 57.678066][ T7585] ? apparmor_file_permission+0x25/0x30 [ 57.683611][ T7585] ? rw_verify_area+0x118/0x360 [ 57.688453][ T7585] do_iter_write+0x184/0x610 [ 57.693046][ T7585] vfs_iter_write+0x77/0xb0 [ 57.697544][ T7585] lo_write_bvec+0x15d/0x390 [ 57.702126][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 57.707575][ T7585] ? __lock_acquire+0x54b/0x4790 [ 57.712507][ T7585] ? __schedule+0x1387/0x1cc0 [ 57.717175][ T7585] ? find_held_lock+0x35/0x130 [ 57.721930][ T7585] loop_queue_work+0xd0a/0x232b [ 57.726766][ T7585] ? mark_held_locks+0xf0/0xf0 [ 57.731521][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 57.736713][ T7585] ? __schedule+0x1387/0x1cc0 [ 57.741379][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 57.746571][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 57.751676][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 57.756609][ T7585] ? kasan_check_write+0x14/0x20 [ 57.761538][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 57.766723][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 57.771820][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 57.777007][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 57.782284][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 57.787312][ T7585] ? kasan_check_read+0x11/0x20 [ 57.792169][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 57.797105][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 57.803252][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 57.809051][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 57.815288][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 57.820491][ T7585] kthread+0x357/0x430 [ 57.824548][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 57.829995][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 57.836226][ T7585] ret_from_fork+0x3a/0x50 [ 57.840651][ T7586] CPU: 1 PID: 7586 Comm: udevd Not tainted 5.0.0-rc6-next-20190213 #34 [ 57.840759][ T7585] Disabling lock debugging due to kernel taint [ 57.848879][ T7586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.848883][ T7586] Call Trace: [ 57.848899][ T7586] dump_stack+0x172/0x1f0 [ 57.848920][ T7586] bad_page.cold+0xda/0xff [ 57.855060][ T7585] BUG: Bad page state in process loop0 pfn:2c15b [ 57.865084][ T7586] ? si_mem_available+0x320/0x320 [ 57.865095][ T7586] ? __lock_is_held+0xb6/0x140 [ 57.865112][ T7586] ? check_preemption_disabled+0x48/0x290 [ 57.868371][ T7585] page:ffffea0000b056c0 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0xc [ 57.872677][ T7586] free_pages_check_bad+0x142/0x1a0 [ 57.872696][ T7586] free_unref_page_list+0x31d/0xc40 [ 57.877083][ T7585] shmem_aops [ 57.877087][ T7586] name:"memfd:" [ 57.883475][ T7586] release_pages+0x60d/0x1940 [ 57.883493][ T7586] ? put_pages_list+0x2e0/0x2e0 [ 57.888485][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 57.893220][ T7586] ? trace_hardirqs_on+0x67/0x230 [ 57.893232][ T7586] ? kasan_check_read+0x11/0x20 [ 57.893249][ T7586] pagevec_lru_move_fn+0x218/0x2a0 [ 57.898942][ T7585] raw: 01fffc000008000c ffffea0000b04688 ffff88800e71f478 ffff88800df2ad40 [ 57.907759][ T7586] ? get_kernel_page+0xb0/0xb0 [ 57.907777][ T7586] lru_add_drain_cpu+0x2f7/0x520 [ 57.912959][ T7585] raw: 000000000000000c 0000000000000000 00000000ffffffff 0000000000000000 [ 57.918120][ T7586] lru_add_drain+0x20/0x60 [ 57.921374][ T7585] page dumped because: non-NULL mapping [ 57.924899][ T7586] exit_mmap+0x290/0x530 [ 57.924910][ T7586] ? mutex_trylock+0x1e0/0x1e0 [ 57.924931][ T7586] ? __ia32_sys_munmap+0x80/0x80 [ 57.929569][ T7585] Modules linked in: [ 57.934396][ T7586] ? exit_aio+0x2cc/0x3a0 [ 57.934407][ T7586] ? kasan_check_write+0x14/0x20 [ 57.934425][ T7586] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 58.025352][ T7586] ? __lock_is_held+0xb6/0x140 [ 58.030108][ T7586] ? io_submit_one+0x1cf0/0x1cf0 [ 58.035034][ T7586] ? wait_for_completion+0x440/0x440 [ 58.040322][ T7586] ? mutex_unlock+0xd/0x10 [ 58.044726][ T7586] mmput+0x15f/0x4c0 [ 58.048633][ T7586] flush_old_exec+0x8d9/0x1c20 [ 58.053472][ T7586] ? writenote+0x2d0/0x2d0 [ 58.057875][ T7586] load_elf_binary+0x9bc/0x53f0 [ 58.062711][ T7586] ? lock_downgrade+0x880/0x880 [ 58.067549][ T7586] ? search_binary_handler+0x130/0x570 [ 58.072995][ T7586] ? find_held_lock+0x35/0x130 [ 58.077746][ T7586] ? notesize.isra.0+0x80/0x80 [ 58.082496][ T7586] ? lock_downgrade+0x880/0x880 [ 58.087337][ T7586] ? kasan_check_write+0x14/0x20 [ 58.092265][ T7586] search_binary_handler+0x17f/0x570 [ 58.097559][ T7586] __do_execve_file.isra.0+0x1394/0x23f0 [ 58.103188][ T7586] ? copy_strings_kernel+0x110/0x110 [ 58.108459][ T7586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.114684][ T7586] ? getname_flags+0x277/0x5b0 [ 58.119440][ T7586] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.125492][ T7586] __x64_sys_execve+0x8f/0xc0 [ 58.130159][ T7586] do_syscall_64+0x103/0x610 [ 58.134744][ T7586] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.140619][ T7586] RIP: 0033:0x7fc7001ba207 [ 58.145032][ T7586] Code: Bad RIP value. [ 58.149081][ T7586] RSP: 002b:00007ffe06aa13b8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b [ 58.157563][ T7586] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fc7001ba207 [ 58.165867][ T7586] RDX: 0000000001fd5fd0 RSI: 00007ffe06aa14b0 RDI: 00007ffe06aa24c0 [ 58.173822][ T7586] RBP: 0000000000625500 R08: 0000000000001c49 R09: 0000000000001c49 [ 58.181777][ T7586] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000001fd5fd0 [ 58.189734][ T7586] R13: 0000000000000007 R14: 0000000001fc6250 R15: 0000000000000005 [ 58.197706][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 58.197742][ T7586] BUG: Bad page state in process udevd pfn:2b13c [ 58.207322][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.207326][ T7585] Call Trace: [ 58.207340][ T7585] dump_stack+0x172/0x1f0 [ 58.207359][ T7585] bad_page.cold+0xda/0xff [ 58.213757][ T7586] page:ffffea0000ac4f00 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0xe [ 58.223780][ T7585] ? si_mem_available+0x320/0x320 [ 58.223796][ T7585] ? __lock_is_held+0xb6/0x140 [ 58.227050][ T7586] shmem_aops [ 58.227055][ T7585] name:"memfd:" [ 58.231355][ T7585] ? check_preemption_disabled+0x48/0x290 [ 58.235746][ T7586] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 58.244560][ T7585] free_pages_check_bad+0x142/0x1a0 [ 58.244577][ T7585] free_unref_page_list+0x31d/0xc40 [ 58.249584][ T7586] raw: 01fffc000008000c ffff8880a85af890 ffff8880a85af890 ffff88800df2ad40 [ 58.254323][ T7585] release_pages+0x60d/0x1940 [ 58.254340][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 58.257598][ T7586] raw: 000000000000000e 0000000000000000 00000000ffffffff 0000000000000000 [ 58.261122][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 58.266827][ T7586] page dumped because: non-NULL mapping [ 58.273556][ T7585] ? kasan_check_read+0x11/0x20 [ 58.273573][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 58.278737][ T7586] Modules linked in: [ 58.284228][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 58.284237][ T7585] activate_page+0x52c/0x830 [ 58.284253][ T7585] mark_page_accessed+0x44b/0x1140 [ 58.350910][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 58.356015][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 58.362154][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 58.367948][ T7585] ? current_time+0x6b/0x140 [ 58.372522][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 58.378313][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.384540][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 58.390423][ T7585] ? timespec64_trunc+0xf0/0x180 [ 58.395352][ T7585] shmem_write_begin+0x105/0x1e0 [ 58.400281][ T7585] generic_perform_write+0x231/0x530 [ 58.405556][ T7585] ? page_endio+0x780/0x780 [ 58.410043][ T7585] ? current_time+0x140/0x140 [ 58.414709][ T7585] ? lock_acquire+0x16f/0x3f0 [ 58.419374][ T7585] __generic_file_write_iter+0x25e/0x630 [ 58.424992][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 58.430716][ T7585] generic_file_write_iter+0x360/0x610 [ 58.436165][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 58.441959][ T7585] ? __lock_acquire+0x54b/0x4790 [ 58.447020][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 58.452211][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 58.457687][ T7585] ? apparmor_file_permission+0x25/0x30 [ 58.463226][ T7585] ? rw_verify_area+0x118/0x360 [ 58.468071][ T7585] do_iter_write+0x184/0x610 [ 58.472674][ T7585] vfs_iter_write+0x77/0xb0 [ 58.477194][ T7585] lo_write_bvec+0x15d/0x390 [ 58.481776][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 58.487222][ T7585] ? __lock_acquire+0x54b/0x4790 [ 58.492154][ T7585] ? __schedule+0x1387/0x1cc0 [ 58.496820][ T7585] ? find_held_lock+0x35/0x130 [ 58.501574][ T7585] loop_queue_work+0xd0a/0x232b [ 58.506433][ T7585] ? mark_held_locks+0xf0/0xf0 [ 58.511186][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 58.516374][ T7585] ? __schedule+0x1387/0x1cc0 [ 58.521060][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 58.526255][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 58.531353][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 58.536280][ T7585] ? kasan_check_write+0x14/0x20 [ 58.541217][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 58.546407][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 58.551504][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 58.556702][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 58.561973][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 58.566984][ T7585] ? kasan_check_read+0x11/0x20 [ 58.571821][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 58.576748][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 58.582891][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 58.588683][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 58.594909][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 58.600095][ T7585] kthread+0x357/0x430 [ 58.604153][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 58.609613][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 58.615839][ T7585] ret_from_fork+0x3a/0x50 [ 58.620256][ T7586] CPU: 1 PID: 7586 Comm: udevd Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 58.620311][ T7585] BUG: Bad page state in process loop0 pfn:2c11a [ 58.629874][ T7586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.629878][ T7586] Call Trace: [ 58.629893][ T7586] dump_stack+0x172/0x1f0 [ 58.629912][ T7586] bad_page.cold+0xda/0xff [ 58.636324][ T7585] page:ffffea0000b04680 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0xb [ 58.646346][ T7586] ? si_mem_available+0x320/0x320 [ 58.646357][ T7586] ? __lock_is_held+0xb6/0x140 [ 58.646373][ T7586] ? check_preemption_disabled+0x48/0x290 [ 58.649629][ T7585] shmem_aops [ 58.649634][ T7586] name:"memfd:" [ 58.653936][ T7586] free_pages_check_bad+0x142/0x1a0 [ 58.653955][ T7586] free_unref_page_list+0x31d/0xc40 [ 58.658342][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 58.667161][ T7586] release_pages+0x60d/0x1940 [ 58.667179][ T7586] ? put_pages_list+0x2e0/0x2e0 [ 58.672176][ T7585] raw: 01fffc000008000c ffffea000074b988 ffff88800e71f478 ffff88800df2ad40 [ 58.676907][ T7586] ? trace_hardirqs_on+0x67/0x230 [ 58.676918][ T7586] ? kasan_check_read+0x11/0x20 [ 58.676935][ T7586] pagevec_lru_move_fn+0x218/0x2a0 [ 58.682641][ T7585] raw: 000000000000000b 0000000000000000 00000000ffffffff 0000000000000000 [ 58.685892][ T7586] ? get_kernel_page+0xb0/0xb0 [ 58.689423][ T7585] page dumped because: non-NULL mapping [ 58.694598][ T7586] lru_add_drain_cpu+0x2f7/0x520 [ 58.694616][ T7586] lru_add_drain+0x20/0x60 [ 58.699777][ T7585] Modules linked in: [ 58.706528][ T7586] exit_mmap+0x290/0x530 [ 58.706540][ T7586] ? mutex_trylock+0x1e0/0x1e0 [ 58.706556][ T7586] ? __ia32_sys_munmap+0x80/0x80 [ 58.785357][ T7586] ? exit_aio+0x2cc/0x3a0 [ 58.789675][ T7586] ? kasan_check_write+0x14/0x20 [ 58.794600][ T7586] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 58.800129][ T7586] ? __lock_is_held+0xb6/0x140 [ 58.804882][ T7586] ? io_submit_one+0x1cf0/0x1cf0 [ 58.809806][ T7586] ? wait_for_completion+0x440/0x440 [ 58.815081][ T7586] ? mutex_unlock+0xd/0x10 [ 58.819483][ T7586] mmput+0x15f/0x4c0 [ 58.823365][ T7586] flush_old_exec+0x8d9/0x1c20 [ 58.828115][ T7586] ? writenote+0x2d0/0x2d0 [ 58.832521][ T7586] load_elf_binary+0x9bc/0x53f0 [ 58.837356][ T7586] ? lock_downgrade+0x880/0x880 [ 58.842194][ T7586] ? search_binary_handler+0x130/0x570 [ 58.847648][ T7586] ? find_held_lock+0x35/0x130 [ 58.852402][ T7586] ? notesize.isra.0+0x80/0x80 [ 58.857150][ T7586] ? lock_downgrade+0x880/0x880 [ 58.861992][ T7586] ? kasan_check_write+0x14/0x20 [ 58.866918][ T7586] search_binary_handler+0x17f/0x570 [ 58.872190][ T7586] __do_execve_file.isra.0+0x1394/0x23f0 [ 58.877823][ T7586] ? copy_strings_kernel+0x110/0x110 [ 58.883119][ T7586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.889343][ T7586] ? getname_flags+0x277/0x5b0 [ 58.894093][ T7586] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.900149][ T7586] __x64_sys_execve+0x8f/0xc0 [ 58.904816][ T7586] do_syscall_64+0x103/0x610 [ 58.909392][ T7586] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.915281][ T7586] RIP: 0033:0x7fc7001ba207 [ 58.919689][ T7586] Code: Bad RIP value. [ 58.923742][ T7586] RSP: 002b:00007ffe06aa13b8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b [ 58.932140][ T7586] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fc7001ba207 [ 58.940101][ T7586] RDX: 0000000001fd5fd0 RSI: 00007ffe06aa14b0 RDI: 00007ffe06aa24c0 [ 58.948055][ T7586] RBP: 0000000000625500 R08: 0000000000001c49 R09: 0000000000001c49 [ 58.956024][ T7586] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000001fd5fd0 [ 58.963980][ T7586] R13: 0000000000000007 R14: 0000000001fc6250 R15: 0000000000000005 [ 58.971949][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 58.981671][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.991750][ T7585] Call Trace: [ 58.995031][ T7585] dump_stack+0x172/0x1f0 [ 58.999427][ T7585] bad_page.cold+0xda/0xff [ 59.003872][ T7585] ? si_mem_available+0x320/0x320 [ 59.009028][ T7585] ? __lock_is_held+0xb6/0x140 [ 59.013777][ T7585] ? check_preemption_disabled+0x48/0x290 [ 59.019477][ T7585] free_pages_check_bad+0x142/0x1a0 [ 59.024656][ T7585] free_unref_page_list+0x31d/0xc40 [ 59.029832][ T7585] release_pages+0x60d/0x1940 [ 59.034603][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 59.039576][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 59.044744][ T7585] ? kasan_check_read+0x11/0x20 [ 59.049574][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 59.054673][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 59.060379][ T7585] activate_page+0x52c/0x830 [ 59.065027][ T7585] mark_page_accessed+0x44b/0x1140 [ 59.070121][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 59.075236][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 59.081373][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 59.087159][ T7585] ? current_time+0x6b/0x140 [ 59.091733][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 59.097684][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.103908][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 59.109784][ T7585] ? timespec64_trunc+0xf0/0x180 [ 59.114703][ T7585] shmem_write_begin+0x105/0x1e0 [ 59.119619][ T7585] generic_perform_write+0x231/0x530 [ 59.124992][ T7585] ? page_endio+0x780/0x780 [ 59.129520][ T7585] ? current_time+0x140/0x140 [ 59.134191][ T7585] ? lock_acquire+0x16f/0x3f0 [ 59.138899][ T7585] __generic_file_write_iter+0x25e/0x630 [ 59.144521][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 59.150223][ T7585] generic_file_write_iter+0x360/0x610 [ 59.155665][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 59.161453][ T7585] ? __lock_acquire+0x54b/0x4790 [ 59.166426][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 59.171614][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 59.177054][ T7585] ? apparmor_file_permission+0x25/0x30 [ 59.182583][ T7585] ? rw_verify_area+0x118/0x360 [ 59.187411][ T7585] do_iter_write+0x184/0x610 [ 59.191979][ T7585] vfs_iter_write+0x77/0xb0 [ 59.196659][ T7585] lo_write_bvec+0x15d/0x390 [ 59.201298][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 59.206739][ T7585] ? __lock_acquire+0x54b/0x4790 [ 59.211662][ T7585] ? __schedule+0x1387/0x1cc0 [ 59.216325][ T7585] ? find_held_lock+0x35/0x130 [ 59.221136][ T7585] loop_queue_work+0xd0a/0x232b [ 59.225978][ T7585] ? mark_held_locks+0xf0/0xf0 [ 59.230716][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.235887][ T7585] ? __schedule+0x1387/0x1cc0 [ 59.240602][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.245782][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 59.250868][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 59.255781][ T7585] ? kasan_check_write+0x14/0x20 [ 59.260694][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.265917][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 59.271011][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.276191][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 59.281523][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 59.286536][ T7585] ? kasan_check_read+0x11/0x20 [ 59.291367][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 59.296311][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 59.302458][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 59.308367][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 59.314593][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 59.319778][ T7585] kthread+0x357/0x430 [ 59.323832][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 59.329271][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 59.335493][ T7585] ret_from_fork+0x3a/0x50 [ 59.340021][ T7585] BUG: Bad page state in process loop0 pfn:1d2e6 [ 59.346454][ T7585] page:ffffea000074b980 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0xa [ 59.355463][ T7585] shmem_aops [ 59.355467][ T7585] name:"memfd:" [ 59.358745][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 59.369122][ T7585] raw: 01fffc000008000c ffffea0001afc208 ffff88800e71f478 ffff88800df2ad40 [ 59.377721][ T7585] raw: 000000000000000a 0000000000000000 00000000ffffffff 0000000000000000 [ 59.386738][ T7585] page dumped because: non-NULL mapping [ 59.392262][ T7585] Modules linked in: [ 59.396185][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 59.405877][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.415975][ T7585] Call Trace: [ 59.419254][ T7585] dump_stack+0x172/0x1f0 [ 59.423564][ T7585] bad_page.cold+0xda/0xff [ 59.428004][ T7585] ? si_mem_available+0x320/0x320 [ 59.433023][ T7585] ? __lock_is_held+0xb6/0x140 [ 59.437763][ T7585] ? check_preemption_disabled+0x48/0x290 [ 59.443468][ T7585] free_pages_check_bad+0x142/0x1a0 [ 59.448650][ T7585] free_unref_page_list+0x31d/0xc40 [ 59.453830][ T7585] release_pages+0x60d/0x1940 [ 59.458485][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 59.463312][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 59.468358][ T7585] ? kasan_check_read+0x11/0x20 [ 59.473194][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 59.478290][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 59.483986][ T7585] activate_page+0x52c/0x830 [ 59.488552][ T7585] mark_page_accessed+0x44b/0x1140 [ 59.493642][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 59.498744][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 59.504877][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 59.510711][ T7585] ? current_time+0x6b/0x140 [ 59.515463][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 59.521253][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.527480][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 59.533360][ T7585] ? timespec64_trunc+0xf0/0x180 [ 59.538272][ T7585] shmem_write_begin+0x105/0x1e0 [ 59.543233][ T7585] generic_perform_write+0x231/0x530 [ 59.548532][ T7585] ? page_endio+0x780/0x780 [ 59.553023][ T7585] ? current_time+0x140/0x140 [ 59.557688][ T7585] ? lock_acquire+0x16f/0x3f0 [ 59.562350][ T7585] __generic_file_write_iter+0x25e/0x630 [ 59.567967][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 59.573709][ T7585] generic_file_write_iter+0x360/0x610 [ 59.579258][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 59.585049][ T7585] ? __lock_acquire+0x54b/0x4790 [ 59.589973][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 59.595294][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 59.600729][ T7585] ? apparmor_file_permission+0x25/0x30 [ 59.606253][ T7585] ? rw_verify_area+0x118/0x360 [ 59.611080][ T7585] do_iter_write+0x184/0x610 [ 59.615650][ T7585] vfs_iter_write+0x77/0xb0 [ 59.620139][ T7585] lo_write_bvec+0x15d/0x390 [ 59.624711][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 59.630150][ T7585] ? __lock_acquire+0x54b/0x4790 [ 59.635070][ T7585] ? __schedule+0x1387/0x1cc0 [ 59.639722][ T7585] ? find_held_lock+0x35/0x130 [ 59.644466][ T7585] loop_queue_work+0xd0a/0x232b [ 59.649291][ T7585] ? mark_held_locks+0xf0/0xf0 [ 59.654034][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.659207][ T7585] ? __schedule+0x1387/0x1cc0 [ 59.663859][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.669036][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 59.674133][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 59.679052][ T7585] ? kasan_check_write+0x14/0x20 [ 59.683972][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.689145][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 59.694232][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 59.699403][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 59.704676][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 59.709784][ T7585] ? kasan_check_read+0x11/0x20 [ 59.714613][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 59.719529][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 59.725665][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 59.731446][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 59.737676][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 59.742849][ T7585] kthread+0x357/0x430 [ 59.746907][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 59.752342][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 59.758569][ T7585] ret_from_fork+0x3a/0x50 [ 59.763019][ T7585] BUG: Bad page state in process loop0 pfn:6bf08 [ 59.769425][ T7585] page:ffffea0001afc200 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x9 [ 59.778284][ T7585] shmem_aops [ 59.778297][ T7585] name:"memfd:" [ 59.781574][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 59.791884][ T7585] raw: 01fffc000008000c ffffea00002cfb08 ffff88800e71f478 ffff88800df2ad40 [ 59.800509][ T7585] raw: 0000000000000009 0000000000000000 00000000ffffffff 0000000000000000 [ 59.809097][ T7585] page dumped because: non-NULL mapping [ 59.814658][ T7585] Modules linked in: [ 59.818557][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 59.828154][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.838181][ T7585] Call Trace: [ 59.841449][ T7585] dump_stack+0x172/0x1f0 [ 59.845771][ T7585] bad_page.cold+0xda/0xff [ 59.850162][ T7585] ? si_mem_available+0x320/0x320 [ 59.855161][ T7585] ? __lock_is_held+0xb6/0x140 [ 59.859907][ T7585] ? check_preemption_disabled+0x48/0x290 [ 59.865608][ T7585] free_pages_check_bad+0x142/0x1a0 [ 59.870781][ T7585] free_unref_page_list+0x31d/0xc40 [ 59.875953][ T7585] release_pages+0x60d/0x1940 [ 59.880616][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 59.885455][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 59.890455][ T7585] ? kasan_check_read+0x11/0x20 [ 59.895292][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 59.900379][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 59.906076][ T7585] activate_page+0x52c/0x830 [ 59.910650][ T7585] mark_page_accessed+0x44b/0x1140 [ 59.915750][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 59.920851][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 59.926982][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 59.932773][ T7585] ? current_time+0x6b/0x140 [ 59.937337][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 59.943121][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.949336][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 59.955204][ T7585] ? timespec64_trunc+0xf0/0x180 [ 59.960116][ T7585] shmem_write_begin+0x105/0x1e0 [ 59.965047][ T7585] generic_perform_write+0x231/0x530 [ 59.970308][ T7585] ? page_endio+0x780/0x780 [ 59.974800][ T7585] ? current_time+0x140/0x140 [ 59.979469][ T7585] ? lock_acquire+0x16f/0x3f0 [ 59.984127][ T7585] __generic_file_write_iter+0x25e/0x630 [ 59.989909][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 59.995606][ T7585] generic_file_write_iter+0x360/0x610 [ 60.001050][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 60.006831][ T7585] ? __lock_acquire+0x54b/0x4790 [ 60.011747][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 60.016934][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 60.022369][ T7585] ? apparmor_file_permission+0x25/0x30 [ 60.027898][ T7585] ? rw_verify_area+0x118/0x360 [ 60.032729][ T7585] do_iter_write+0x184/0x610 [ 60.037315][ T7585] vfs_iter_write+0x77/0xb0 [ 60.041802][ T7585] lo_write_bvec+0x15d/0x390 [ 60.046368][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 60.051800][ T7585] ? __lock_acquire+0x54b/0x4790 [ 60.056715][ T7585] ? __schedule+0x1387/0x1cc0 [ 60.061367][ T7585] ? find_held_lock+0x35/0x130 [ 60.066113][ T7585] loop_queue_work+0xd0a/0x232b [ 60.070942][ T7585] ? mark_held_locks+0xf0/0xf0 [ 60.075681][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.080855][ T7585] ? __schedule+0x1387/0x1cc0 [ 60.085507][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.090679][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 60.095779][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 60.100695][ T7585] ? kasan_check_write+0x14/0x20 [ 60.105608][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.110781][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 60.115865][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.121051][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 60.126349][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 60.131353][ T7585] ? kasan_check_read+0x11/0x20 [ 60.136180][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 60.141094][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 60.147223][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 60.153005][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 60.159222][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 60.164395][ T7585] kthread+0x357/0x430 [ 60.168437][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 60.173882][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 60.180099][ T7585] ret_from_fork+0x3a/0x50 [ 60.184546][ T7585] BUG: Bad page state in process loop0 pfn:0b3ec [ 60.190952][ T7585] page:ffffea00002cfb00 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x8 [ 60.199825][ T7585] shmem_aops [ 60.199830][ T7585] name:"memfd:" [ 60.203120][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 60.213411][ T7585] raw: 01fffc000008000c ffffea0000db3c48 ffff88800e71f478 ffff88800df2ad40 [ 60.221986][ T7585] raw: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 [ 60.230567][ T7585] page dumped because: non-NULL mapping [ 60.236106][ T7585] Modules linked in: [ 60.239983][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 60.249580][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.259606][ T7585] Call Trace: [ 60.262876][ T7585] dump_stack+0x172/0x1f0 [ 60.267196][ T7585] bad_page.cold+0xda/0xff [ 60.271590][ T7585] ? si_mem_available+0x320/0x320 [ 60.276595][ T7585] ? __lock_is_held+0xb6/0x140 [ 60.281337][ T7585] ? check_preemption_disabled+0x48/0x290 [ 60.287033][ T7585] free_pages_check_bad+0x142/0x1a0 [ 60.292213][ T7585] free_unref_page_list+0x31d/0xc40 [ 60.297392][ T7585] release_pages+0x60d/0x1940 [ 60.302046][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 60.306890][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 60.311892][ T7585] ? kasan_check_read+0x11/0x20 [ 60.316717][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 60.321803][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 60.327501][ T7585] activate_page+0x52c/0x830 [ 60.332426][ T7585] mark_page_accessed+0x44b/0x1140 [ 60.337532][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 60.342626][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 60.348754][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 60.354533][ T7585] ? current_time+0x6b/0x140 [ 60.359096][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 60.364879][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.371094][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 60.376970][ T7585] ? timespec64_trunc+0xf0/0x180 [ 60.381884][ T7585] shmem_write_begin+0x105/0x1e0 [ 60.386805][ T7585] generic_perform_write+0x231/0x530 [ 60.392254][ T7585] ? page_endio+0x780/0x780 [ 60.396735][ T7585] ? current_time+0x140/0x140 [ 60.401387][ T7585] ? lock_acquire+0x16f/0x3f0 [ 60.406057][ T7585] __generic_file_write_iter+0x25e/0x630 [ 60.411663][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 60.417359][ T7585] generic_file_write_iter+0x360/0x610 [ 60.422807][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 60.428589][ T7585] ? __lock_acquire+0x54b/0x4790 [ 60.433520][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 60.438694][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 60.444128][ T7585] ? apparmor_file_permission+0x25/0x30 [ 60.449650][ T7585] ? rw_verify_area+0x118/0x360 [ 60.454488][ T7585] do_iter_write+0x184/0x610 [ 60.459062][ T7585] vfs_iter_write+0x77/0xb0 [ 60.463541][ T7585] lo_write_bvec+0x15d/0x390 [ 60.468104][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 60.473534][ T7585] ? __lock_acquire+0x54b/0x4790 [ 60.478449][ T7585] ? __schedule+0x1387/0x1cc0 [ 60.483106][ T7585] ? find_held_lock+0x35/0x130 [ 60.487845][ T7585] loop_queue_work+0xd0a/0x232b [ 60.492671][ T7585] ? mark_held_locks+0xf0/0xf0 [ 60.497409][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.502582][ T7585] ? __schedule+0x1387/0x1cc0 [ 60.507234][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.512418][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 60.517517][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 60.522435][ T7585] ? kasan_check_write+0x14/0x20 [ 60.527357][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.532541][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 60.537626][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.542810][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 60.548072][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 60.553071][ T7585] ? kasan_check_read+0x11/0x20 [ 60.557898][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 60.562815][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 60.568939][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 60.574730][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 60.580945][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 60.586120][ T7585] kthread+0x357/0x430 [ 60.590165][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 60.595602][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 60.601826][ T7585] ret_from_fork+0x3a/0x50 [ 60.606298][ T7585] BUG: Bad page state in process loop0 pfn:36cf1 [ 60.612741][ T7585] page:ffffea0000db3c40 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x7 [ 60.621562][ T7585] shmem_aops [ 60.621565][ T7585] name:"memfd:" [ 60.624855][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 60.635146][ T7585] raw: 01fffc000008000c ffffea0000b05788 ffff88800e71f478 ffff88800df2ad40 [ 60.643835][ T7585] raw: 0000000000000007 0000000000000000 00000000ffffffff 0000000000000000 [ 60.652429][ T7585] page dumped because: non-NULL mapping [ 60.657954][ T7585] Modules linked in: [ 60.661828][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 60.671425][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.681463][ T7585] Call Trace: [ 60.684741][ T7585] dump_stack+0x172/0x1f0 [ 60.689067][ T7585] bad_page.cold+0xda/0xff [ 60.693463][ T7585] ? si_mem_available+0x320/0x320 [ 60.698461][ T7585] ? __lock_is_held+0xb6/0x140 [ 60.703202][ T7585] ? check_preemption_disabled+0x48/0x290 [ 60.708896][ T7585] free_pages_check_bad+0x142/0x1a0 [ 60.714069][ T7585] free_unref_page_list+0x31d/0xc40 [ 60.719349][ T7585] release_pages+0x60d/0x1940 [ 60.724017][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 60.728845][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 60.733843][ T7585] ? kasan_check_read+0x11/0x20 [ 60.738685][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 60.743783][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 60.749479][ T7585] activate_page+0x52c/0x830 [ 60.754045][ T7585] mark_page_accessed+0x44b/0x1140 [ 60.759129][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 60.764230][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 60.770357][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 60.776149][ T7585] ? current_time+0x6b/0x140 [ 60.780718][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 60.786498][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 60.792714][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 60.798579][ T7585] ? timespec64_trunc+0xf0/0x180 [ 60.803492][ T7585] shmem_write_begin+0x105/0x1e0 [ 60.808409][ T7585] generic_perform_write+0x231/0x530 [ 60.813678][ T7585] ? page_endio+0x780/0x780 [ 60.818155][ T7585] ? current_time+0x140/0x140 [ 60.822809][ T7585] ? lock_acquire+0x16f/0x3f0 [ 60.827461][ T7585] __generic_file_write_iter+0x25e/0x630 [ 60.833078][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 60.838787][ T7585] generic_file_write_iter+0x360/0x610 [ 60.844223][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 60.850005][ T7585] ? __lock_acquire+0x54b/0x4790 [ 60.854938][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 60.860112][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 60.865549][ T7585] ? apparmor_file_permission+0x25/0x30 [ 60.871067][ T7585] ? rw_verify_area+0x118/0x360 [ 60.875895][ T7585] do_iter_write+0x184/0x610 [ 60.880463][ T7585] vfs_iter_write+0x77/0xb0 [ 60.884944][ T7585] lo_write_bvec+0x15d/0x390 [ 60.889510][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 60.894942][ T7585] ? __lock_acquire+0x54b/0x4790 [ 60.899858][ T7585] ? __schedule+0x1387/0x1cc0 [ 60.904509][ T7585] ? find_held_lock+0x35/0x130 [ 60.909251][ T7585] loop_queue_work+0xd0a/0x232b [ 60.914087][ T7585] ? mark_held_locks+0xf0/0xf0 [ 60.918824][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.924005][ T7585] ? __schedule+0x1387/0x1cc0 [ 60.928657][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.933842][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 60.938928][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 60.943843][ T7585] ? kasan_check_write+0x14/0x20 [ 60.948769][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.953961][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 60.959047][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 60.964222][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 60.969489][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 60.974492][ T7585] ? kasan_check_read+0x11/0x20 [ 60.979325][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 60.984253][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 60.990380][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 60.996164][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 61.002386][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 61.007570][ T7585] kthread+0x357/0x430 [ 61.011621][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 61.017064][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 61.023285][ T7585] ret_from_fork+0x3a/0x50 [ 61.027740][ T7585] BUG: Bad page state in process loop0 pfn:2c15e [ 61.034161][ T7585] page:ffffea0000b05780 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x6 [ 61.043025][ T7585] shmem_aops [ 61.043029][ T7585] name:"memfd:" [ 61.046321][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 61.056604][ T7585] raw: 01fffc000008000c ffffea0001af86c8 ffff88800e71f478 ffff88800df2ad40 [ 61.065985][ T7585] raw: 0000000000000006 0000000000000000 00000000ffffffff 0000000000000000 [ 61.074568][ T7585] page dumped because: non-NULL mapping [ 61.080091][ T7585] Modules linked in: [ 61.084003][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 61.093618][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.103646][ T7585] Call Trace: [ 61.106912][ T7585] dump_stack+0x172/0x1f0 [ 61.111240][ T7585] bad_page.cold+0xda/0xff [ 61.115630][ T7585] ? si_mem_available+0x320/0x320 [ 61.120630][ T7585] ? __lock_is_held+0xb6/0x140 [ 61.125368][ T7585] ? check_preemption_disabled+0x48/0x290 [ 61.131067][ T7585] free_pages_check_bad+0x142/0x1a0 [ 61.136245][ T7585] free_unref_page_list+0x31d/0xc40 [ 61.141433][ T7585] release_pages+0x60d/0x1940 [ 61.146089][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 61.150914][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 61.155914][ T7585] ? kasan_check_read+0x11/0x20 [ 61.160739][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 61.165826][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 61.171519][ T7585] activate_page+0x52c/0x830 [ 61.176086][ T7585] mark_page_accessed+0x44b/0x1140 [ 61.181173][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 61.186262][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 61.192392][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 61.198181][ T7585] ? current_time+0x6b/0x140 [ 61.202746][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 61.208524][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.214737][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 61.220605][ T7585] ? timespec64_trunc+0xf0/0x180 [ 61.225519][ T7585] shmem_write_begin+0x105/0x1e0 [ 61.230431][ T7585] generic_perform_write+0x231/0x530 [ 61.235694][ T7585] ? page_endio+0x780/0x780 [ 61.240175][ T7585] ? current_time+0x140/0x140 [ 61.244827][ T7585] ? lock_acquire+0x16f/0x3f0 [ 61.249494][ T7585] __generic_file_write_iter+0x25e/0x630 [ 61.255102][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 61.260808][ T7585] generic_file_write_iter+0x360/0x610 [ 61.266245][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 61.272022][ T7585] ? __lock_acquire+0x54b/0x4790 [ 61.276936][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 61.282117][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 61.287559][ T7585] ? apparmor_file_permission+0x25/0x30 [ 61.293101][ T7585] ? rw_verify_area+0x118/0x360 [ 61.297929][ T7585] do_iter_write+0x184/0x610 [ 61.302519][ T7585] vfs_iter_write+0x77/0xb0 [ 61.306998][ T7585] lo_write_bvec+0x15d/0x390 [ 61.311560][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 61.316993][ T7585] ? __lock_acquire+0x54b/0x4790 [ 61.321905][ T7585] ? __schedule+0x1387/0x1cc0 [ 61.326566][ T7585] ? find_held_lock+0x35/0x130 [ 61.331309][ T7585] loop_queue_work+0xd0a/0x232b [ 61.336141][ T7585] ? mark_held_locks+0xf0/0xf0 [ 61.340888][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.346060][ T7585] ? __schedule+0x1387/0x1cc0 [ 61.350713][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.355890][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 61.360976][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 61.365908][ T7585] ? kasan_check_write+0x14/0x20 [ 61.370820][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.376008][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 61.381109][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.386300][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 61.391568][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 61.396565][ T7585] ? kasan_check_read+0x11/0x20 [ 61.401394][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 61.406309][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 61.412442][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 61.418224][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 61.424438][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 61.429609][ T7585] kthread+0x357/0x430 [ 61.433653][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 61.439097][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 61.445312][ T7585] ret_from_fork+0x3a/0x50 [ 61.449758][ T7585] BUG: Bad page state in process loop0 pfn:6be1b [ 61.456185][ T7585] page:ffffea0001af86c0 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x5 [ 61.465045][ T7585] shmem_aops [ 61.465050][ T7585] name:"memfd:" [ 61.468325][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 61.478612][ T7585] raw: 01fffc000008000c ffffea0000b048c8 ffff88800e71f478 ffff88800df2ad40 [ 61.487233][ T7585] raw: 0000000000000005 0000000000000000 00000000ffffffff 0000000000000000 [ 61.495815][ T7585] page dumped because: non-NULL mapping [ 61.501814][ T7585] Modules linked in: [ 61.505730][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 61.515341][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.525368][ T7585] Call Trace: [ 61.528633][ T7585] dump_stack+0x172/0x1f0 [ 61.532945][ T7585] bad_page.cold+0xda/0xff [ 61.537338][ T7585] ? si_mem_available+0x320/0x320 [ 61.542343][ T7585] ? __lock_is_held+0xb6/0x140 [ 61.547091][ T7585] ? check_preemption_disabled+0x48/0x290 [ 61.552800][ T7585] free_pages_check_bad+0x142/0x1a0 [ 61.557974][ T7585] free_unref_page_list+0x31d/0xc40 [ 61.563148][ T7585] release_pages+0x60d/0x1940 [ 61.567802][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 61.572642][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 61.577644][ T7585] ? kasan_check_read+0x11/0x20 [ 61.582473][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 61.587560][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 61.593255][ T7585] activate_page+0x52c/0x830 [ 61.597823][ T7585] mark_page_accessed+0x44b/0x1140 [ 61.602912][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 61.608009][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 61.614147][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 61.619936][ T7585] ? current_time+0x6b/0x140 [ 61.624501][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 61.630282][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.636495][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 61.642359][ T7585] ? timespec64_trunc+0xf0/0x180 [ 61.647272][ T7585] shmem_write_begin+0x105/0x1e0 [ 61.652192][ T7585] generic_perform_write+0x231/0x530 [ 61.657451][ T7585] ? page_endio+0x780/0x780 [ 61.661931][ T7585] ? current_time+0x140/0x140 [ 61.666584][ T7585] ? lock_acquire+0x16f/0x3f0 [ 61.671253][ T7585] __generic_file_write_iter+0x25e/0x630 [ 61.676862][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 61.682554][ T7585] generic_file_write_iter+0x360/0x610 [ 61.688005][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 61.693787][ T7585] ? __lock_acquire+0x54b/0x4790 [ 61.698714][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 61.703888][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 61.709322][ T7585] ? apparmor_file_permission+0x25/0x30 [ 61.714849][ T7585] ? rw_verify_area+0x118/0x360 [ 61.719677][ T7585] do_iter_write+0x184/0x610 [ 61.724247][ T7585] vfs_iter_write+0x77/0xb0 [ 61.728727][ T7585] lo_write_bvec+0x15d/0x390 [ 61.733292][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 61.738726][ T7585] ? __lock_acquire+0x54b/0x4790 [ 61.743640][ T7585] ? __schedule+0x1387/0x1cc0 [ 61.748291][ T7585] ? find_held_lock+0x35/0x130 [ 61.753030][ T7585] loop_queue_work+0xd0a/0x232b [ 61.757855][ T7585] ? mark_held_locks+0xf0/0xf0 [ 61.762594][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.767767][ T7585] ? __schedule+0x1387/0x1cc0 [ 61.772422][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.777596][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 61.782685][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 61.787688][ T7585] ? kasan_check_write+0x14/0x20 [ 61.792599][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.797768][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 61.802850][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 61.808022][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 61.813284][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 61.818296][ T7585] ? kasan_check_read+0x11/0x20 [ 61.823125][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 61.828040][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 61.834170][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 61.839949][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 61.846168][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 61.851422][ T7585] kthread+0x357/0x430 [ 61.855477][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 61.860918][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 61.867132][ T7585] ret_from_fork+0x3a/0x50 [ 61.871606][ T7585] BUG: Bad page state in process loop0 pfn:2c123 [ 61.878029][ T7585] page:ffffea0000b048c0 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x4 [ 61.886877][ T7585] shmem_aops [ 61.886882][ T7585] name:"memfd:" [ 61.890286][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 61.900719][ T7585] raw: 01fffc000008000c ffffea0000dbc608 ffff88800e71f478 ffff88800df2ad40 [ 61.909401][ T7585] raw: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 [ 61.918106][ T7585] page dumped because: non-NULL mapping [ 61.923649][ T7585] Modules linked in: [ 61.927532][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 61.937125][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.947156][ T7585] Call Trace: [ 61.950422][ T7585] dump_stack+0x172/0x1f0 [ 61.954731][ T7585] bad_page.cold+0xda/0xff [ 61.959122][ T7585] ? si_mem_available+0x320/0x320 [ 61.964121][ T7585] ? __lock_is_held+0xb6/0x140 [ 61.968859][ T7585] ? check_preemption_disabled+0x48/0x290 [ 61.974560][ T7585] free_pages_check_bad+0x142/0x1a0 [ 61.979747][ T7585] free_unref_page_list+0x31d/0xc40 [ 61.984923][ T7585] release_pages+0x60d/0x1940 [ 61.989577][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 61.994401][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 61.999404][ T7585] ? kasan_check_read+0x11/0x20 [ 62.004231][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 62.009318][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 62.015012][ T7585] activate_page+0x52c/0x830 [ 62.019590][ T7585] mark_page_accessed+0x44b/0x1140 [ 62.024679][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 62.029781][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 62.035911][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 62.041701][ T7585] ? current_time+0x6b/0x140 [ 62.046265][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 62.052045][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.058381][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 62.064247][ T7585] ? timespec64_trunc+0xf0/0x180 [ 62.069161][ T7585] shmem_write_begin+0x105/0x1e0 [ 62.074077][ T7585] generic_perform_write+0x231/0x530 [ 62.079339][ T7585] ? page_endio+0x780/0x780 [ 62.083817][ T7585] ? current_time+0x140/0x140 [ 62.088468][ T7585] ? lock_acquire+0x16f/0x3f0 [ 62.093142][ T7585] __generic_file_write_iter+0x25e/0x630 [ 62.098749][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 62.104448][ T7585] generic_file_write_iter+0x360/0x610 [ 62.109887][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 62.115677][ T7585] ? __lock_acquire+0x54b/0x4790 [ 62.120593][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 62.125766][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 62.131203][ T7585] ? apparmor_file_permission+0x25/0x30 [ 62.136906][ T7585] ? rw_verify_area+0x118/0x360 [ 62.141730][ T7585] do_iter_write+0x184/0x610 [ 62.146296][ T7585] vfs_iter_write+0x77/0xb0 [ 62.150777][ T7585] lo_write_bvec+0x15d/0x390 [ 62.155342][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 62.160772][ T7585] ? __lock_acquire+0x54b/0x4790 [ 62.165701][ T7585] ? __schedule+0x1387/0x1cc0 [ 62.170371][ T7585] ? find_held_lock+0x35/0x130 [ 62.175125][ T7585] loop_queue_work+0xd0a/0x232b [ 62.179969][ T7585] ? mark_held_locks+0xf0/0xf0 [ 62.184710][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.189888][ T7585] ? __schedule+0x1387/0x1cc0 [ 62.194538][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.199710][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 62.204796][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 62.209708][ T7585] ? kasan_check_write+0x14/0x20 [ 62.214617][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.219803][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 62.224890][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.230066][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 62.235330][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 62.240341][ T7585] ? kasan_check_read+0x11/0x20 [ 62.245171][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 62.250086][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 62.256215][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 62.261996][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 62.268209][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 62.273392][ T7585] kthread+0x357/0x430 [ 62.277433][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 62.282883][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 62.289099][ T7585] ret_from_fork+0x3a/0x50 [ 62.293548][ T7585] BUG: Bad page state in process loop0 pfn:36f18 [ 62.299953][ T7585] page:ffffea0000dbc600 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x3 [ 62.308808][ T7585] shmem_aops [ 62.308812][ T7585] name:"memfd:" [ 62.312092][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 62.322390][ T7585] raw: 01fffc000008000c ffffea0000b06f08 ffff88800e71f478 ffff88800df2ad40 [ 62.331480][ T7585] raw: 0000000000000003 0000000000000000 00000000ffffffff 0000000000000000 [ 62.340072][ T7585] page dumped because: non-NULL mapping [ 62.345610][ T7585] Modules linked in: [ 62.349499][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 62.359095][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.369125][ T7585] Call Trace: [ 62.372393][ T7585] dump_stack+0x172/0x1f0 [ 62.376724][ T7585] bad_page.cold+0xda/0xff [ 62.381126][ T7585] ? si_mem_available+0x320/0x320 [ 62.386133][ T7585] ? __lock_is_held+0xb6/0x140 [ 62.390874][ T7585] ? check_preemption_disabled+0x48/0x290 [ 62.396568][ T7585] free_pages_check_bad+0x142/0x1a0 [ 62.401752][ T7585] free_unref_page_list+0x31d/0xc40 [ 62.406938][ T7585] release_pages+0x60d/0x1940 [ 62.411601][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 62.416465][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 62.421465][ T7585] ? kasan_check_read+0x11/0x20 [ 62.426303][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 62.431400][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 62.437096][ T7585] activate_page+0x52c/0x830 [ 62.441675][ T7585] mark_page_accessed+0x44b/0x1140 [ 62.446759][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 62.451972][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 62.458105][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 62.463886][ T7585] ? current_time+0x6b/0x140 [ 62.468460][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 62.474239][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.480452][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 62.486328][ T7585] ? timespec64_trunc+0xf0/0x180 [ 62.491240][ T7585] shmem_write_begin+0x105/0x1e0 [ 62.496154][ T7585] generic_perform_write+0x231/0x530 [ 62.501426][ T7585] ? page_endio+0x780/0x780 [ 62.506002][ T7585] ? current_time+0x140/0x140 [ 62.510657][ T7585] ? lock_acquire+0x16f/0x3f0 [ 62.515309][ T7585] __generic_file_write_iter+0x25e/0x630 [ 62.520914][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 62.526611][ T7585] generic_file_write_iter+0x360/0x610 [ 62.532052][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 62.537829][ T7585] ? __lock_acquire+0x54b/0x4790 [ 62.542753][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 62.547925][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 62.553377][ T7585] ? apparmor_file_permission+0x25/0x30 [ 62.558901][ T7585] ? rw_verify_area+0x118/0x360 [ 62.563742][ T7585] do_iter_write+0x184/0x610 [ 62.568310][ T7585] vfs_iter_write+0x77/0xb0 [ 62.572791][ T7585] lo_write_bvec+0x15d/0x390 [ 62.577374][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 62.582825][ T7585] ? __lock_acquire+0x54b/0x4790 [ 62.587746][ T7585] ? __schedule+0x1387/0x1cc0 [ 62.592416][ T7585] ? find_held_lock+0x35/0x130 [ 62.597247][ T7585] loop_queue_work+0xd0a/0x232b [ 62.602069][ T7585] ? mark_held_locks+0xf0/0xf0 [ 62.606809][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.611986][ T7585] ? __schedule+0x1387/0x1cc0 [ 62.616636][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.621829][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 62.626917][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 62.631837][ T7585] ? kasan_check_write+0x14/0x20 [ 62.636752][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.641923][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 62.647020][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 62.652193][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 62.657465][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 62.662468][ T7585] ? kasan_check_read+0x11/0x20 [ 62.667294][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 62.672221][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 62.678350][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 62.684149][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 62.690364][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 62.695535][ T7585] kthread+0x357/0x430 [ 62.699577][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 62.705011][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 62.711223][ T7585] ret_from_fork+0x3a/0x50 [ 62.715684][ T7585] BUG: Bad page state in process loop0 pfn:2c1bc [ 62.722089][ T7585] page:ffffea0000b06f00 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x2 [ 62.730943][ T7585] shmem_aops [ 62.730948][ T7585] name:"memfd:" [ 62.734262][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 62.744551][ T7585] raw: 01fffc000008000c ffffea0000ac8e08 ffff88800e71f478 ffff88800df2ad40 [ 62.753144][ T7585] raw: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 [ 62.761700][ T7585] page dumped because: non-NULL mapping [ 62.767239][ T7585] Modules linked in: [ 62.771123][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 62.780720][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.790748][ T7585] Call Trace: [ 62.794017][ T7585] dump_stack+0x172/0x1f0 [ 62.798325][ T7585] bad_page.cold+0xda/0xff [ 62.802718][ T7585] ? si_mem_available+0x320/0x320 [ 62.807724][ T7585] ? __lock_is_held+0xb6/0x140 [ 62.812460][ T7585] ? check_preemption_disabled+0x48/0x290 [ 62.818153][ T7585] free_pages_check_bad+0x142/0x1a0 [ 62.823341][ T7585] free_unref_page_list+0x31d/0xc40 [ 62.828517][ T7585] release_pages+0x60d/0x1940 [ 62.833169][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 62.837996][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 62.842996][ T7585] ? kasan_check_read+0x11/0x20 [ 62.847834][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 62.852919][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 62.858611][ T7585] activate_page+0x52c/0x830 [ 62.863175][ T7585] mark_page_accessed+0x44b/0x1140 [ 62.868260][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 62.873365][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 62.879492][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 62.885272][ T7585] ? current_time+0x6b/0x140 [ 62.889837][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 62.895615][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.901831][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 62.907698][ T7585] ? timespec64_trunc+0xf0/0x180 [ 62.912621][ T7585] shmem_write_begin+0x105/0x1e0 [ 62.917541][ T7585] generic_perform_write+0x231/0x530 [ 62.922816][ T7585] ? page_endio+0x780/0x780 [ 62.927292][ T7585] ? current_time+0x140/0x140 [ 62.931944][ T7585] ? lock_acquire+0x16f/0x3f0 [ 62.936607][ T7585] __generic_file_write_iter+0x25e/0x630 [ 62.942212][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 62.947907][ T7585] generic_file_write_iter+0x360/0x610 [ 62.953351][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 62.959129][ T7585] ? __lock_acquire+0x54b/0x4790 [ 62.964044][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 62.969219][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 62.974649][ T7585] ? apparmor_file_permission+0x25/0x30 [ 62.980278][ T7585] ? rw_verify_area+0x118/0x360 [ 62.985105][ T7585] do_iter_write+0x184/0x610 [ 62.989688][ T7585] vfs_iter_write+0x77/0xb0 [ 62.994166][ T7585] lo_write_bvec+0x15d/0x390 [ 62.998731][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 63.004163][ T7585] ? __lock_acquire+0x54b/0x4790 [ 63.009076][ T7585] ? __schedule+0x1387/0x1cc0 [ 63.013742][ T7585] ? find_held_lock+0x35/0x130 [ 63.018482][ T7585] loop_queue_work+0xd0a/0x232b [ 63.023304][ T7585] ? mark_held_locks+0xf0/0xf0 [ 63.028045][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.033226][ T7585] ? __schedule+0x1387/0x1cc0 [ 63.037875][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.043065][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 63.048149][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 63.053071][ T7585] ? kasan_check_write+0x14/0x20 [ 63.057982][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.063151][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 63.068233][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.073403][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 63.078661][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 63.083662][ T7585] ? kasan_check_read+0x11/0x20 [ 63.088487][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 63.093449][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 63.099577][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 63.105355][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 63.111567][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 63.116740][ T7585] kthread+0x357/0x430 [ 63.120790][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 63.126233][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 63.132449][ T7585] ret_from_fork+0x3a/0x50 [ 63.136911][ T7585] BUG: Bad page state in process loop0 pfn:2b238 [ 63.143336][ T7585] page:ffffea0000ac8e00 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x1 [ 63.152156][ T7585] shmem_aops [ 63.152160][ T7585] name:"memfd:" [ 63.155535][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 63.165836][ T7585] raw: 01fffc000008000c ffffea000194af88 ffff88800e71f478 ffff88800df2ad40 [ 63.174427][ T7585] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 [ 63.183115][ T7585] page dumped because: non-NULL mapping [ 63.188641][ T7585] Modules linked in: [ 63.192547][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 63.202150][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.212187][ T7585] Call Trace: [ 63.215457][ T7585] dump_stack+0x172/0x1f0 [ 63.219772][ T7585] bad_page.cold+0xda/0xff [ 63.224161][ T7585] ? si_mem_available+0x320/0x320 [ 63.229175][ T7585] ? __lock_is_held+0xb6/0x140 [ 63.233915][ T7585] ? check_preemption_disabled+0x48/0x290 [ 63.239620][ T7585] free_pages_check_bad+0x142/0x1a0 [ 63.244793][ T7585] free_unref_page_list+0x31d/0xc40 [ 63.249966][ T7585] release_pages+0x60d/0x1940 [ 63.254621][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 63.259447][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 63.264446][ T7585] ? kasan_check_read+0x11/0x20 [ 63.269272][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 63.274370][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 63.280177][ T7585] activate_page+0x52c/0x830 [ 63.284745][ T7585] mark_page_accessed+0x44b/0x1140 [ 63.289846][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 63.294943][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 63.301070][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 63.306846][ T7585] ? current_time+0x6b/0x140 [ 63.311412][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 63.317193][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.323423][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 63.329303][ T7585] ? timespec64_trunc+0xf0/0x180 [ 63.334216][ T7585] shmem_write_begin+0x105/0x1e0 [ 63.339128][ T7585] generic_perform_write+0x231/0x530 [ 63.344390][ T7585] ? page_endio+0x780/0x780 [ 63.348866][ T7585] ? current_time+0x140/0x140 [ 63.353529][ T7585] ? lock_acquire+0x16f/0x3f0 [ 63.358193][ T7585] __generic_file_write_iter+0x25e/0x630 [ 63.363798][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 63.369491][ T7585] generic_file_write_iter+0x360/0x610 [ 63.374943][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 63.380724][ T7585] ? __lock_acquire+0x54b/0x4790 [ 63.385645][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 63.390819][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 63.396251][ T7585] ? apparmor_file_permission+0x25/0x30 [ 63.401775][ T7585] ? rw_verify_area+0x118/0x360 [ 63.406599][ T7585] do_iter_write+0x184/0x610 [ 63.411178][ T7585] vfs_iter_write+0x77/0xb0 [ 63.415672][ T7585] lo_write_bvec+0x15d/0x390 [ 63.420242][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 63.425683][ T7585] ? __lock_acquire+0x54b/0x4790 [ 63.430615][ T7585] ? __schedule+0x1387/0x1cc0 [ 63.435268][ T7585] ? find_held_lock+0x35/0x130 [ 63.440013][ T7585] loop_queue_work+0xd0a/0x232b [ 63.444835][ T7585] ? mark_held_locks+0xf0/0xf0 [ 63.449572][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.454750][ T7585] ? __schedule+0x1387/0x1cc0 [ 63.459399][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.464589][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 63.469676][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 63.474589][ T7585] ? kasan_check_write+0x14/0x20 [ 63.479503][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.484674][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 63.489760][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.494930][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 63.500188][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 63.505184][ T7585] ? kasan_check_read+0x11/0x20 [ 63.510013][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 63.515568][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 63.521697][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 63.527478][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 63.533695][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 63.538867][ T7585] kthread+0x357/0x430 [ 63.542907][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 63.548341][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 63.554558][ T7585] ret_from_fork+0x3a/0x50 [ 63.559015][ T7585] BUG: Bad page state in process loop0 pfn:652be [ 63.565438][ T7585] page:ffffea000194af80 count:0 mapcount:0 mapping:ffff88800df2ad40 index:0x0 [ 63.574288][ T7585] shmem_aops [ 63.574293][ T7585] name:"memfd:" [ 63.577565][ T7585] flags: 0x1fffc000008000c(uptodate|dirty|swapbacked) [ 63.587870][ T7585] raw: 01fffc000008000c ffff88800e71f478 ffff88800e71f478 ffff88800df2ad40 [ 63.596466][ T7585] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 63.605046][ T7585] page dumped because: non-NULL mapping [ 63.610572][ T7585] Modules linked in: [ 63.614474][ T7585] CPU: 0 PID: 7585 Comm: loop0 Tainted: G B 5.0.0-rc6-next-20190213 #34 [ 63.624087][ T7585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.634123][ T7585] Call Trace: [ 63.637391][ T7585] dump_stack+0x172/0x1f0 [ 63.641695][ T7585] bad_page.cold+0xda/0xff [ 63.646085][ T7585] ? si_mem_available+0x320/0x320 [ 63.651086][ T7585] ? __lock_is_held+0xb6/0x140 [ 63.655826][ T7585] ? check_preemption_disabled+0x48/0x290 [ 63.661535][ T7585] free_pages_check_bad+0x142/0x1a0 [ 63.666711][ T7585] free_unref_page_list+0x31d/0xc40 [ 63.671890][ T7585] release_pages+0x60d/0x1940 [ 63.676558][ T7585] ? put_pages_list+0x2e0/0x2e0 [ 63.681384][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 63.686398][ T7585] ? kasan_check_read+0x11/0x20 [ 63.691228][ T7585] pagevec_lru_move_fn+0x218/0x2a0 [ 63.696314][ T7585] ? lru_deactivate_file_fn+0x1a30/0x1a30 [ 63.702006][ T7585] activate_page+0x52c/0x830 [ 63.706568][ T7585] mark_page_accessed+0x44b/0x1140 [ 63.711654][ T7585] shmem_getpage_gfp+0x1558/0x2500 [ 63.716757][ T7585] ? shmem_unuse_inode.constprop.0+0xfd0/0xfd0 [ 63.722900][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 63.728678][ T7585] ? current_time+0x6b/0x140 [ 63.733258][ T7585] ? ktime_get_coarse_real_ts64+0xf0/0x2b0 [ 63.739038][ T7585] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.745250][ T7585] ? iov_iter_fault_in_readable+0x22c/0x450 [ 63.751114][ T7585] ? timespec64_trunc+0xf0/0x180 [ 63.756140][ T7585] shmem_write_begin+0x105/0x1e0 [ 63.761054][ T7585] generic_perform_write+0x231/0x530 [ 63.766332][ T7585] ? page_endio+0x780/0x780 [ 63.770807][ T7585] ? current_time+0x140/0x140 [ 63.775461][ T7585] ? lock_acquire+0x16f/0x3f0 [ 63.780127][ T7585] __generic_file_write_iter+0x25e/0x630 [ 63.785740][ T7585] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 63.791434][ T7585] generic_file_write_iter+0x360/0x610 [ 63.796865][ T7585] ? __generic_file_write_iter+0x630/0x630 [ 63.802654][ T7585] ? __lock_acquire+0x54b/0x4790 [ 63.807566][ T7585] do_iter_readv_writev+0x5e1/0x8e0 [ 63.812740][ T7585] ? vfs_dedupe_file_range+0x780/0x780 [ 63.818175][ T7585] ? apparmor_file_permission+0x25/0x30 [ 63.823718][ T7585] ? rw_verify_area+0x118/0x360 [ 63.828543][ T7585] do_iter_write+0x184/0x610 [ 63.833108][ T7585] vfs_iter_write+0x77/0xb0 [ 63.837587][ T7585] lo_write_bvec+0x15d/0x390 [ 63.842154][ T7585] ? lo_rw_aio_do_completion+0xb0/0xb0 [ 63.847585][ T7585] ? __lock_acquire+0x54b/0x4790 [ 63.852516][ T7585] ? __schedule+0x1387/0x1cc0 [ 63.857168][ T7585] ? find_held_lock+0x35/0x130 [ 63.861905][ T7585] loop_queue_work+0xd0a/0x232b [ 63.866728][ T7585] ? mark_held_locks+0xf0/0xf0 [ 63.871467][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.876637][ T7585] ? __schedule+0x1387/0x1cc0 [ 63.881287][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.886476][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 63.891581][ T7585] ? lo_compat_ioctl+0x120/0x120 [ 63.896493][ T7585] ? kasan_check_write+0x14/0x20 [ 63.901405][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.906574][ T7585] ? kthread_worker_fn+0x23f/0x7a0 [ 63.911658][ T7585] ? _raw_spin_unlock_irq+0x28/0x90 [ 63.916828][ T7585] ? lockdep_hardirqs_on+0x418/0x5d0 [ 63.922087][ T7585] ? trace_hardirqs_on+0x67/0x230 [ 63.927085][ T7585] ? kasan_check_read+0x11/0x20 [ 63.931913][ T7585] kthread_worker_fn+0x2c9/0x7a0 [ 63.936841][ T7585] ? kthread_freezable_should_stop+0x120/0x120 [ 63.942969][ T7585] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 63.948762][ T7585] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 63.954974][ T7585] loop_kthread_worker_fn+0x51/0x60 [ 63.960143][ T7585] kthread+0x357/0x430 [ 63.964184][ T7585] ? loop_info64_to_compat+0x6d0/0x6d0 [ 63.969615][ T7585] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 63.975838][ T7585] ret_from_fork+0x3a/0x50