Warning: Permanently added '10.128.0.89' (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 syzkaller login: [ 49.907885] ------------[ cut here ]------------ [ 49.912807] generic_make_request: Trying to write to read-only block-device sda1 (partno 1) [ 49.922426] WARNING: CPU: 0 PID: 2992 at block/blk-core.c:2182 generic_make_request_checks+0x1f9b/0x22e0 [ 49.932060] Kernel panic - not syncing: panic_on_warn set ... [ 49.932060] [ 49.939423] CPU: 0 PID: 2992 Comm: kworker/u4:4 Not tainted 4.19.155-syzkaller #0 [ 49.947029] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.956376] Workqueue: writeback wb_workfn (flush-8:0) [ 49.961642] Call Trace: [ 49.964223] dump_stack+0x1fc/0x2fe [ 49.967838] panic+0x26a/0x50e [ 49.971021] ? __warn_printk+0xf3/0xf3 [ 49.974921] ? generic_make_request_checks+0x1f9b/0x22e0 [ 49.980409] ? __probe_kernel_read+0x130/0x1b0 [ 49.985019] ? __warn.cold+0x5/0x61 [ 49.988636] ? __warn+0xe4/0x200 [ 49.991987] ? generic_make_request_checks+0x1f9b/0x22e0 [ 49.997544] __warn.cold+0x20/0x61 [ 50.001080] ? generic_make_request_checks+0x1f9b/0x22e0 [ 50.006519] report_bug+0x262/0x2b0 [ 50.010141] do_error_trap+0x1d7/0x310 [ 50.014023] ? math_error+0x310/0x310 [ 50.017810] ? __irq_work_queue_local+0x101/0x160 [ 50.022730] ? irq_work_queue+0x29/0x80 [ 50.026690] ? error_entry+0x72/0xd0 [ 50.030388] ? trace_hardirqs_off_caller+0x6e/0x210 [ 50.035401] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.040254] invalid_op+0x14/0x20 [ 50.043700] RIP: 0010:generic_make_request_checks+0x1f9b/0x22e0 [ 50.049746] Code: 2c 03 00 00 45 8b be 9c 04 00 00 48 8d 74 24 68 48 89 ef e8 77 24 06 00 48 c7 c7 20 f8 b1 88 48 89 c6 44 89 fa e8 b0 e1 ce fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 0f b6 04 [ 50.068632] RSP: 0018:ffff8880abe37150 EFLAGS: 00010286 [ 50.073983] RAX: 0000000000000000 RBX: ffff8880ae7d7000 RCX: 0000000000000000 [ 50.081255] RDX: 0000000000000000 RSI: ffffffff814fda81 RDI: ffffed10157c6e1c [ 50.088519] RBP: ffff8880aa52e000 R08: 0000000000000001 R09: 0000000000000000 [ 50.095771] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880aa52e030 [ 50.103023] R13: ffff8880aa52e008 R14: ffff8880a8ea04c0 R15: 0000000000000001 [ 50.110296] ? vprintk_func+0x81/0x17e [ 50.114186] ? should_fail_bio.isra.0+0xa0/0xa0 [ 50.118840] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 50.123839] ? kmem_cache_alloc+0x315/0x370 [ 50.128144] generic_make_request+0x23f/0xdf0 [ 50.132623] ? blk_put_request+0x110/0x110 [ 50.136839] ? sb_mark_inode_writeback+0xc8/0x490 [ 50.141668] submit_bio+0xb1/0x430 [ 50.145191] ? generic_make_request+0xdf0/0xdf0 [ 50.149862] ? check_preemption_disabled+0x41/0x280 [ 50.154865] ? guard_bio_eod+0x2a0/0x640 [ 50.158909] submit_bh_wbc+0x5a7/0x760 [ 50.162809] __block_write_full_page+0x71a/0xf60 [ 50.167552] ? block_llseek+0xc0/0xc0 [ 50.171335] block_write_full_page+0x1f3/0x260 [ 50.175904] ? block_llseek+0xc0/0xc0 [ 50.179696] __writepage+0x5e/0xe0 [ 50.183217] write_cache_pages+0x802/0x12d0 [ 50.187542] ? tag_pages_for_writeback+0x2f0/0x2f0 [ 50.192457] ? clear_page_dirty_for_io+0xee0/0xee0 [ 50.197372] ? lock_repin_lock+0x2f/0x470 [ 50.201508] ? mark_held_locks+0xf0/0xf0 [ 50.205553] ? blkdev_readpages+0x30/0x30 [ 50.209680] generic_writepages+0xdb/0x150 [ 50.213898] ? dirty_poll_interval.part.0+0x30/0x30 [ 50.218896] ? __lock_acquire+0x6de/0x3ff0 [ 50.223115] ? mark_held_locks+0xf0/0xf0 [ 50.227158] do_writepages+0xe5/0x290 [ 50.230962] ? page_writeback_cpu_online+0x10/0x10 [ 50.235875] ? wbc_attach_and_unlock_inode+0x11d/0x9e0 [ 50.241138] ? check_preemption_disabled+0x41/0x280 [ 50.246141] __writeback_single_inode+0x113/0x1340 [ 50.251057] ? _raw_spin_unlock+0x29/0x40 [ 50.255187] ? wbc_attach_and_unlock_inode+0x11d/0x9e0 [ 50.260450] writeback_sb_inodes+0x537/0xef0 [ 50.264871] ? do_raw_spin_unlock+0x171/0x230 [ 50.269352] ? wbc_detach_inode+0x840/0x840 [ 50.273658] ? down_read_trylock+0x4e/0x90 [ 50.277873] ? trylock_super+0x1d/0x100 [ 50.281830] __writeback_inodes_wb+0xc6/0x280 [ 50.286321] wb_writeback+0x841/0xcc0 [ 50.290115] ? writeback_inodes_wb.constprop.0+0x1d0/0x1d0 [ 50.295728] ? cpumask_next+0x3c/0x40 [ 50.299517] ? get_nr_dirty_inodes+0x19e/0x210 [ 50.304085] wb_workfn+0x90f/0x12f0 [ 50.307700] ? inode_wait_for_writeback+0x30/0x30 [ 50.312530] process_one_work+0x864/0x1570 [ 50.316767] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 50.321424] worker_thread+0x64c/0x1130 [ 50.325392] ? __kthread_parkme+0x133/0x1e0 [ 50.329695] ? process_one_work+0x1570/0x1570 [ 50.334171] kthread+0x33f/0x460 [ 50.337520] ? kthread_park+0x180/0x180 [ 50.341477] ret_from_fork+0x24/0x30 [ 50.346067] Kernel Offset: disabled [ 50.349727] Rebooting in 86400 seconds..