Warning: Permanently added '10.128.0.146' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.453757][ T25] kauditd_printk_skb: 3 callbacks suppressed [ 72.453769][ T25] audit: type=1804 audit(1574963880.775:31): pid=9165 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor864" name="/root/file0" dev="sda1" ino=16485 res=1 [ 72.488026][ T9165] ------------[ cut here ]------------ [ 72.493914][ T9165] generic_make_request: Trying to write to read-only block-device loop0 (partno 0) [ 72.504038][ T9165] WARNING: CPU: 0 PID: 9165 at block/blk-core.c:800 generic_make_request_checks+0x1c78/0x2190 [ 72.514301][ T9165] Kernel panic - not syncing: panic_on_warn set ... [ 72.520979][ T9165] CPU: 0 PID: 9165 Comm: syz-executor864 Not tainted 5.4.0-syzkaller #0 [ 72.529288][ T9165] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.540038][ T9165] Call Trace: [ 72.543353][ T9165] dump_stack+0x197/0x210 [ 72.547719][ T9165] ? generic_make_request_checks+0x1c60/0x2190 [ 72.554012][ T9165] panic+0x2e3/0x75c [ 72.558011][ T9165] ? add_taint.cold+0x16/0x16 [ 72.563208][ T9165] ? __kasan_check_write+0x14/0x20 [ 72.568314][ T9165] ? __warn.cold+0x14/0x3e [ 72.572719][ T9165] ? __warn+0xd9/0x1cf [ 72.576779][ T9165] ? generic_make_request_checks+0x1c78/0x2190 [ 72.585355][ T9165] __warn.cold+0x2f/0x3e [ 72.589593][ T9165] ? generic_make_request_checks+0x1c78/0x2190 [ 72.595750][ T9165] report_bug+0x289/0x300 [ 72.600074][ T9165] do_error_trap+0x11b/0x200 [ 72.604656][ T9165] do_invalid_op+0x37/0x50 [ 72.609056][ T9165] ? generic_make_request_checks+0x1c78/0x2190 [ 72.615202][ T9165] invalid_op+0x23/0x30 [ 72.619343][ T9165] RIP: 0010:generic_make_request_checks+0x1c78/0x2190 [ 72.626184][ T9165] Code: 00 00 44 8b ab 5c 05 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 5a 94 05 00 48 c7 c7 c0 47 05 88 48 89 c6 44 89 ea e8 a7 e4 0e fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 [ 72.645772][ T9165] RSP: 0018:ffff8880921af1c0 EFLAGS: 00010286 [ 72.651848][ T9165] RAX: 0000000000000000 RBX: ffff8880a3b7f000 RCX: 0000000000000000 [ 72.659994][ T9165] RDX: 0000000000000000 RSI: ffffffff815dc196 RDI: ffffed1012435e2a [ 72.667950][ T9165] RBP: ffff8880921af2c0 R08: ffff8880a0ab65c0 R09: ffffed1015d06621 [ 72.675906][ T9165] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: ffff8880a3a34208 [ 72.683949][ T9165] R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a3a34200 [ 72.691928][ T9165] ? vprintk_func+0x86/0x189 [ 72.696513][ T9165] ? trace_event_raw_event_block_rq_requeue+0x640/0x640 [ 72.703579][ T9165] ? __kasan_check_read+0x11/0x20 [ 72.708685][ T9165] ? __lock_acquire+0x8a0/0x4a00 [ 72.713612][ T9165] ? __kasan_check_read+0x11/0x20 [ 72.718719][ T9165] generic_make_request+0x8f/0xb50 [ 72.723821][ T9165] ? blk_queue_enter+0xe30/0xe30 [ 72.728766][ T9165] ? lock_downgrade+0x920/0x920 [ 72.733606][ T9165] submit_bio+0x113/0x600 [ 72.737931][ T9165] ? submit_bio+0x113/0x600 [ 72.742420][ T9165] ? generic_make_request+0xb50/0xb50 [ 72.747800][ T9165] ? bio_associate_blkg_from_css+0x4fd/0x980 [ 72.753773][ T9165] ? bio_reset+0x3a0/0x3a0 [ 72.758178][ T9165] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 72.763891][ T9165] ? guard_bio_eod+0x28f/0x6c0 [ 72.768644][ T9165] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 72.774450][ T9165] submit_bh_wbc+0x6b6/0x900 [ 72.779041][ T9165] __block_write_full_page+0x7fe/0x11b0 [ 72.784571][ T9165] ? bdev_evict_inode+0x5c0/0x5c0 [ 72.789586][ T9165] ? __getblk_gfp+0xa10/0xa10 [ 72.794255][ T9165] block_write_full_page+0x21f/0x270 [ 72.799525][ T9165] ? bdev_evict_inode+0x5c0/0x5c0 [ 72.804539][ T9165] blkdev_writepage+0x25/0x30 [ 72.809215][ T9165] __writepage+0x66/0x110 [ 72.813538][ T9165] write_cache_pages+0x80c/0x13f0 [ 72.818902][ T9165] ? tag_pages_for_writeback+0x4b0/0x4b0 [ 72.824614][ T9165] ? clear_page_dirty_for_io+0xde0/0xde0 [ 72.830263][ T9165] ? lock_downgrade+0x920/0x920 [ 72.835202][ T9165] generic_writepages+0xed/0x160 [ 72.840153][ T9165] ? write_cache_pages+0x13f0/0x13f0 [ 72.845463][ T9165] ? wbc_attach_and_unlock_inode+0x515/0xa00 [ 72.851444][ T9165] ? find_held_lock+0x35/0x130 [ 72.856219][ T9165] ? blkdev_readpages+0x40/0x40 [ 72.861063][ T9165] blkdev_writepages+0x1e/0x30 [ 72.865828][ T9165] do_writepages+0xfa/0x2a0 [ 72.870331][ T9165] ? page_writeback_cpu_online+0x20/0x20 [ 72.875954][ T9165] ? do_raw_spin_unlock+0x178/0x270 [ 72.881322][ T9165] ? _raw_spin_unlock+0x28/0x40 [ 72.886157][ T9165] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 72.892381][ T9165] ? wbc_attach_and_unlock_inode+0x637/0xa00 [ 72.898348][ T9165] __filemap_fdatawrite_range+0x2bc/0x3b0 [ 72.904063][ T9165] ? delete_from_page_cache_batch+0xfe0/0xfe0 [ 72.910148][ T9165] ? lock_downgrade+0x920/0x920 [ 72.914987][ T9165] filemap_write_and_wait+0xf8/0x1e0 [ 72.920255][ T9165] __blkdev_put+0x204/0x810 [ 72.924760][ T9165] ? bd_set_size+0xb0/0xb0 [ 72.929268][ T9165] ? wait_for_completion+0x440/0x440 [ 72.934557][ T9165] blkdev_put+0x98/0x560 [ 72.938794][ T9165] blkdev_close+0x8b/0xb0 [ 72.943119][ T9165] __fput+0x2ff/0x890 [ 72.947105][ T9165] ? blkdev_put+0x560/0x560 [ 72.951594][ T9165] ____fput+0x16/0x20 [ 72.955564][ T9165] task_work_run+0x145/0x1c0 [ 72.960152][ T9165] do_exit+0x8e7/0x2e00 [ 72.964292][ T9165] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.971477][ T9165] ? mm_update_next_owner+0x7c0/0x7c0 [ 72.976835][ T9165] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 72.982893][ T9165] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 72.988611][ T9165] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 72.994086][ T9165] do_group_exit+0x135/0x360 [ 72.998721][ T9165] __x64_sys_exit_group+0x44/0x50 [ 73.003746][ T9165] do_syscall_64+0xfa/0x790 [ 73.008244][ T9165] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.014120][ T9165] RIP: 0033:0x442c38 [ 73.018001][ T9165] Code: 00 00 ea dc 40 00 00 00 00 00 c8 de 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 dc 40 00 00 00 00 00 ea dc 40 00 00 00 00 00 ea dc 40 00 00 00 [ 73.037588][ T9165] RSP: 002b:00007ffca7fef168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 73.045985][ T9165] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442c38 [ 73.054115][ T9165] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 73.062071][ T9165] RBP: 00000000004c2548 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 73.070037][ T9165] R10: 00000000004002e0 R11: 0000000000000246 R12: 0000000000000001 [ 73.078862][ T9165] R13: 00000000006d41a0 R14: 0000000000000000 R15: 0000000000000000 [ 73.088580][ T9165] Kernel Offset: disabled [ 73.093025][ T9165] Rebooting in 86400 seconds..