Warning: Permanently added '10.128.1.121' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 65.924327][ T2651] ------------[ cut here ]------------ [ 65.931099][ T2651] Trying to write to read-only block-device nullb0 (partno 0) [ 65.948603][ T2651] WARNING: CPU: 0 PID: 2651 at block/blk-core.c:688 submit_bio_checks+0x163a/0x1ac0 [ 65.959282][ T2651] Modules linked in: [ 65.963313][ T2651] CPU: 1 PID: 2651 Comm: kworker/u4:5 Not tainted 5.15.0-rc4-syzkaller #0 [ 65.972217][ T2651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.982666][ T2651] Workqueue: writeback wb_workfn (flush-250:0) [ 65.991841][ T2651] RIP: 0010:submit_bio_checks+0x163a/0x1ac0 [ 65.997816][ T2651] Code: 00 00 45 0f b6 a4 24 88 05 00 00 48 8d 74 24 60 48 89 ef e8 38 21 fe ff 48 c7 c7 20 19 e2 89 48 89 c6 44 89 e2 e8 82 e8 2e 05 <0f> 0b e9 86 f3 ff ff e8 4a 55 b2 fd e8 75 86 71 05 31 ff 89 c3 89 [ 66.017826][ T2651] RSP: 0018:ffffc9000ac57080 EFLAGS: 00010286 [ 66.023978][ T2651] RAX: 0000000000000000 RBX: ffff88801bd68e40 RCX: 0000000000000000 [ 66.031976][ T2651] RDX: ffff8880250fd580 RSI: ffffffff815daf18 RDI: fffff5200158ae02 [ 66.040023][ T2651] RBP: ffff88806f0a7140 R08: 0000000000000000 R09: 0000000000000000 [ 66.048104][ T2651] R10: ffffffff815d4cbe R11: 0000000000000000 R12: 0000000000000000 [ 66.056477][ T2651] R13: ffff88806f0a7150 R14: ffff8881444a0bc0 R15: ffff88801bd693b4 [ 66.064894][ T2651] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 66.073975][ T2651] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.080681][ T2651] CR2: 00000000200000c0 CR3: 0000000070a2a000 CR4: 0000000000350ee0 [ 66.089130][ T2651] Call Trace: [ 66.092412][ T2651] ? __lock_acquire+0xbc2/0x54a0 [ 66.098622][ T2651] ? trace_event_raw_event_block_rq_requeue+0x510/0x510 [ 66.106085][ T2651] submit_bio_noacct+0x81/0xf20 [ 66.111019][ T2651] ? blk_queue_enter+0xb60/0xb60 [ 66.116685][ T2651] ? lock_downgrade+0x6e0/0x6e0 [ 66.121623][ T2651] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 66.129869][ T2651] ? __bio_add_page+0x377/0x540 [ 66.135221][ T2651] submit_bio+0x1ea/0x470 [ 66.139549][ T2651] ? submit_bio_noacct+0xf20/0xf20 [ 66.145655][ T2651] submit_bh_wbc+0x5eb/0x7f0 [ 66.150853][ T2651] __block_write_full_page+0x879/0x1360 [ 66.157221][ T2651] ? __blkdev_direct_IO_simple+0x900/0x900 [ 66.163893][ T2651] block_write_full_page+0x14d/0x190 [ 66.169185][ T2651] ? __blkdev_direct_IO_simple+0x900/0x900 [ 66.175836][ T2651] __writepage+0x60/0x180 [ 66.180161][ T2651] write_cache_pages+0x754/0x11c0 [ 66.186034][ T2651] ? tag_pages_for_writeback+0x440/0x440 [ 66.191656][ T2651] ? clear_page_dirty_for_io+0xa70/0xa70 [ 66.198276][ T2651] ? rwsem_mark_wake+0x6d2/0x830 [ 66.203317][ T2651] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 66.210214][ T2651] ? find_held_lock+0x2d/0x110 [ 66.215516][ T2651] ? find_held_lock+0x2d/0x110 [ 66.220808][ T2651] ? blkdev_readahead+0x20/0x20 [ 66.226473][ T2651] generic_writepages+0xe2/0x150 [ 66.231774][ T2651] ? write_cache_pages+0x11c0/0x11c0 [ 66.238606][ T2651] ? lock_downgrade+0x6e0/0x6e0 [ 66.244071][ T2651] ? do_raw_spin_lock+0x120/0x2b0 [ 66.249288][ T2651] ? rwlock_bug.part.0+0x90/0x90 [ 66.255128][ T2651] do_writepages+0x1ab/0x7b0 [ 66.259729][ T2651] ? writeback_set_ratelimit+0x150/0x150 [ 66.270332][ T2651] ? find_held_lock+0x2d/0x110 [ 66.275664][ T2651] ? wbc_attach_and_unlock_inode+0x111/0xa00 [ 66.281653][ T2651] ? lock_downgrade+0x6e0/0x6e0 [ 66.287319][ T2651] ? writeback_sb_inodes+0x3a6/0xf00 [ 66.292602][ T2651] __writeback_single_inode+0x126/0xff0 [ 66.298751][ T2651] ? wbc_attach_and_unlock_inode+0x111/0xa00 [ 66.305122][ T2651] writeback_sb_inodes+0x53d/0xf00 [ 66.310240][ T2651] ? sync_inode_metadata+0xd0/0xd0 [ 66.316079][ T2651] __writeback_inodes_wb+0xc6/0x280 [ 66.321276][ T2651] wb_writeback+0x7f8/0xc30 [ 66.326660][ T2651] ? __writeback_inodes_wb+0x280/0x280 [ 66.332304][ T2651] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 66.339396][ T2651] ? cpumask_next+0xa4/0xf0 [ 66.344322][ T2651] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 66.350044][ T2651] ? get_nr_dirty_inodes+0x16f/0x210 [ 66.356023][ T2651] wb_workfn+0xa4b/0x12d0 [ 66.360362][ T2651] ? inode_wait_for_writeback+0x30/0x30 [ 66.366641][ T2651] ? lock_release+0x720/0x720 [ 66.371321][ T2651] process_one_work+0x9bf/0x16b0 [ 66.376818][ T2651] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 66.382367][ T2651] ? rwlock_bug.part.0+0x90/0x90 [ 66.387511][ T2651] ? _raw_spin_lock_irq+0x41/0x50 [ 66.392559][ T2651] worker_thread+0x658/0x11f0 [ 66.397558][ T2651] ? process_one_work+0x16b0/0x16b0 [ 66.402771][ T2651] kthread+0x3e5/0x4d0 [ 66.407299][ T2651] ? set_kthread_struct+0x130/0x130 [ 66.412600][ T2651] ret_from_fork+0x1f/0x30 [ 66.417429][ T2651] Kernel panic - not syncing: panic_on_warn set ... [ 66.424010][ T2651] CPU: 1 PID: 2651 Comm: kworker/u4:5 Not tainted 5.15.0-rc4-syzkaller #0 [ 66.432594][ T2651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.442792][ T2651] Workqueue: writeback wb_workfn (flush-250:0) [ 66.448941][ T2651] Call Trace: [ 66.452296][ T2651] dump_stack_lvl+0xcd/0x134 [ 66.456887][ T2651] panic+0x2b0/0x6dd [ 66.460769][ T2651] ? __warn_printk+0xf3/0xf3 [ 66.465363][ T2651] ? __warn.cold+0x1a/0x44 [ 66.469763][ T2651] ? submit_bio_checks+0x163a/0x1ac0 [ 66.475032][ T2651] __warn.cold+0x35/0x44 [ 66.479254][ T2651] ? wake_up_klogd.part.0+0x8e/0xd0 [ 66.484440][ T2651] ? submit_bio_checks+0x163a/0x1ac0 [ 66.489878][ T2651] report_bug+0x1bd/0x210 [ 66.494203][ T2651] handle_bug+0x3c/0x60 [ 66.498348][ T2651] exc_invalid_op+0x14/0x40 [ 66.502833][ T2651] asm_exc_invalid_op+0x12/0x20 [ 66.507840][ T2651] RIP: 0010:submit_bio_checks+0x163a/0x1ac0 [ 66.513802][ T2651] Code: 00 00 45 0f b6 a4 24 88 05 00 00 48 8d 74 24 60 48 89 ef e8 38 21 fe ff 48 c7 c7 20 19 e2 89 48 89 c6 44 89 e2 e8 82 e8 2e 05 <0f> 0b e9 86 f3 ff ff e8 4a 55 b2 fd e8 75 86 71 05 31 ff 89 c3 89 [ 66.533758][ T2651] RSP: 0018:ffffc9000ac57080 EFLAGS: 00010286 [ 66.539905][ T2651] RAX: 0000000000000000 RBX: ffff88801bd68e40 RCX: 0000000000000000 [ 66.547877][ T2651] RDX: ffff8880250fd580 RSI: ffffffff815daf18 RDI: fffff5200158ae02 [ 66.555836][ T2651] RBP: ffff88806f0a7140 R08: 0000000000000000 R09: 0000000000000000 [ 66.563791][ T2651] R10: ffffffff815d4cbe R11: 0000000000000000 R12: 0000000000000000 [ 66.571835][ T2651] R13: ffff88806f0a7150 R14: ffff8881444a0bc0 R15: ffff88801bd693b4 [ 66.579803][ T2651] ? wake_up_klogd.part.0+0x8e/0xd0 [ 66.585004][ T2651] ? vprintk+0x88/0x90 [ 66.589070][ T2651] ? __lock_acquire+0xbc2/0x54a0 [ 66.593996][ T2651] ? trace_event_raw_event_block_rq_requeue+0x510/0x510 [ 66.600931][ T2651] submit_bio_noacct+0x81/0xf20 [ 66.605769][ T2651] ? blk_queue_enter+0xb60/0xb60 [ 66.610688][ T2651] ? lock_downgrade+0x6e0/0x6e0 [ 66.615533][ T2651] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 66.621775][ T2651] ? __bio_add_page+0x377/0x540 [ 66.626706][ T2651] submit_bio+0x1ea/0x470 [ 66.631109][ T2651] ? submit_bio_noacct+0xf20/0xf20 [ 66.636214][ T2651] submit_bh_wbc+0x5eb/0x7f0 [ 66.640812][ T2651] __block_write_full_page+0x879/0x1360 [ 66.646347][ T2651] ? __blkdev_direct_IO_simple+0x900/0x900 [ 66.652147][ T2651] block_write_full_page+0x14d/0x190 [ 66.657508][ T2651] ? __blkdev_direct_IO_simple+0x900/0x900 [ 66.663312][ T2651] __writepage+0x60/0x180 [ 66.667890][ T2651] write_cache_pages+0x754/0x11c0 [ 66.672905][ T2651] ? tag_pages_for_writeback+0x440/0x440 [ 66.678547][ T2651] ? clear_page_dirty_for_io+0xa70/0xa70 [ 66.684168][ T2651] ? rwsem_mark_wake+0x6d2/0x830 [ 66.689098][ T2651] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 66.695081][ T2651] ? find_held_lock+0x2d/0x110 [ 66.699849][ T2651] ? find_held_lock+0x2d/0x110 [ 66.704597][ T2651] ? blkdev_readahead+0x20/0x20 [ 66.709434][ T2651] generic_writepages+0xe2/0x150 [ 66.714359][ T2651] ? write_cache_pages+0x11c0/0x11c0 [ 66.719646][ T2651] ? lock_downgrade+0x6e0/0x6e0 [ 66.724482][ T2651] ? do_raw_spin_lock+0x120/0x2b0 [ 66.729503][ T2651] ? rwlock_bug.part.0+0x90/0x90 [ 66.734434][ T2651] do_writepages+0x1ab/0x7b0 [ 66.739014][ T2651] ? writeback_set_ratelimit+0x150/0x150 [ 66.744635][ T2651] ? find_held_lock+0x2d/0x110 [ 66.749400][ T2651] ? wbc_attach_and_unlock_inode+0x111/0xa00 [ 66.755384][ T2651] ? lock_downgrade+0x6e0/0x6e0 [ 66.760217][ T2651] ? writeback_sb_inodes+0x3a6/0xf00 [ 66.765607][ T2651] __writeback_single_inode+0x126/0xff0 [ 66.771144][ T2651] ? wbc_attach_and_unlock_inode+0x111/0xa00 [ 66.777117][ T2651] writeback_sb_inodes+0x53d/0xf00 [ 66.782230][ T2651] ? sync_inode_metadata+0xd0/0xd0 [ 66.787350][ T2651] __writeback_inodes_wb+0xc6/0x280 [ 66.792564][ T2651] wb_writeback+0x7f8/0xc30 [ 66.797080][ T2651] ? __writeback_inodes_wb+0x280/0x280 [ 66.802549][ T2651] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 66.808794][ T2651] ? cpumask_next+0xa4/0xf0 [ 66.813288][ T2651] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 66.818993][ T2651] ? get_nr_dirty_inodes+0x16f/0x210 [ 66.824274][ T2651] wb_workfn+0xa4b/0x12d0 [ 66.828786][ T2651] ? inode_wait_for_writeback+0x30/0x30 [ 66.834322][ T2651] ? lock_release+0x720/0x720 [ 66.839104][ T2651] process_one_work+0x9bf/0x16b0 [ 66.844664][ T2651] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 66.850030][ T2651] ? rwlock_bug.part.0+0x90/0x90 [ 66.854953][ T2651] ? _raw_spin_lock_irq+0x41/0x50 [ 66.860324][ T2651] worker_thread+0x658/0x11f0 [ 66.864991][ T2651] ? process_one_work+0x16b0/0x16b0 [ 66.870182][ T2651] kthread+0x3e5/0x4d0 [ 66.874238][ T2651] ? set_kthread_struct+0x130/0x130 [ 66.880135][ T2651] ret_from_fork+0x1f/0x30 [ 66.884768][ T2651] Kernel Offset: disabled [ 66.889246][ T2651] Rebooting in 86400 seconds..