Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts. syzkaller login: [ 55.397052][ T8372] IPVS: ftp: loaded support on port[0] = 21 executing program [ 55.495179][ T8406] loop0: detected capacity change from 0 to 519 [ 55.628182][ T8406] ------------[ cut here ]------------ [ 55.634028][ T8406] Trying to write to read-only block-device loop0 (partno 0) [ 55.642628][ T8406] WARNING: CPU: 0 PID: 8406 at block/blk-core.c:704 submit_bio_checks+0x165c/0x1aa0 [ 55.652814][ T8406] Modules linked in: [ 55.657385][ T8406] CPU: 0 PID: 8406 Comm: syz-executor384 Not tainted 5.12.0-rc6-syzkaller #0 [ 55.666590][ T8406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.685649][ T8406] RIP: 0010:submit_bio_checks+0x165c/0x1aa0 [ 55.703332][ T8406] Code: 00 00 45 0f b6 a4 24 e0 05 00 00 48 8d 74 24 60 48 89 ef e8 c6 3e fe ff 48 c7 c7 20 09 c0 89 48 89 c6 44 89 e2 e8 a0 0b 0f 05 <0f> 0b e9 36 f3 ff ff e8 18 14 c1 fd 0f 0b e9 bf f1 ff ff e8 0c 14 [ 55.724566][ T8406] RSP: 0018:ffffc900016bf0d8 EFLAGS: 00010286 [ 55.732058][ T8406] RAX: 0000000000000000 RBX: ffff88814393e158 RCX: 0000000000000000 [ 55.741492][ T8406] RDX: ffff888014b70000 RSI: ffffffff815c4cb5 RDI: fffff520002d7e0d [ 55.750948][ T8406] RBP: ffff88801181cb40 R08: 0000000000000000 R09: 0000000000000000 [ 55.759442][ T8406] R10: ffffffff815bda4e R11: 0000000000000000 R12: 0000000000000000 [ 55.767544][ T8406] R13: ffff88801181cb50 R14: ffff8881427f4500 R15: ffff88814393e664 [ 55.775627][ T8406] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 55.784613][ T8406] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.791350][ T8406] CR2: 0000562de50a1160 CR3: 0000000013dcb000 CR4: 0000000000350ee0 [ 55.799388][ T8406] Call Trace: [ 55.802664][ T8406] ? trace_event_raw_event_block_rq_requeue+0x510/0x510 [ 55.809671][ T8406] ? __lock_acquire+0xb43/0x54c0 [ 55.814612][ T8406] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 55.820798][ T8406] submit_bio_noacct+0x81/0xf20 [ 55.825661][ T8406] ? blk_queue_enter+0xb50/0xb50 [ 55.831339][ T8406] ? bio_associate_blkg_from_css+0x563/0xf60 [ 55.837368][ T8406] ? lock_downgrade+0x6e0/0x6e0 [ 55.842222][ T8406] submit_bio+0x263/0x5e0 [ 55.847457][ T8406] ? submit_bio_noacct+0xf20/0xf20 [ 55.853054][ T8406] ? bio_add_page+0x186/0x1f0 [ 55.858011][ T8406] ? __bio_try_merge_page+0x350/0x350 [ 55.863669][ T8406] submit_bh_wbc+0x5eb/0x7f0 [ 55.868744][ T8406] __block_write_full_page+0x86c/0x1340 [ 55.874671][ T8406] ? bdev_disk_changed+0x3c0/0x3c0 [ 55.880302][ T8406] block_write_full_page+0x14d/0x190 [ 55.885615][ T8406] ? bdev_disk_changed+0x3c0/0x3c0 [ 55.890821][ T8406] __writepage+0x60/0x180 [ 55.895152][ T8406] write_cache_pages+0x759/0x11a0 [ 55.900226][ T8406] ? tag_pages_for_writeback+0x450/0x450 [ 55.905861][ T8406] ? clear_page_dirty_for_io+0xa10/0xa10 [ 55.911732][ T8406] ? free_zapped_rcu+0x2f1/0x310 [ 55.916728][ T8406] ? lock_chain_count+0x20/0x20 [ 55.921592][ T8406] ? __lock_acquire+0x16b3/0x54c0 [ 55.926696][ T8406] ? blkdev_readahead+0x20/0x20 [ 55.931548][ T8406] generic_writepages+0xe2/0x150 [ 55.936521][ T8406] ? write_cache_pages+0x11a0/0x11a0 [ 55.941813][ T8406] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 55.947843][ T8406] ? find_held_lock+0x2d/0x110 [ 55.952623][ T8406] do_writepages+0xec/0x290 [ 55.957160][ T8406] ? writeback_set_ratelimit+0x150/0x150 [ 55.962793][ T8406] ? do_raw_spin_lock+0x120/0x2b0 [ 55.967882][ T8406] ? do_raw_spin_unlock+0x171/0x230 [ 55.973084][ T8406] ? _raw_spin_unlock+0x24/0x40 [ 55.978553][ T8406] ? wbc_attach_and_unlock_inode+0x117/0x9e0 [ 55.984738][ T8406] __filemap_fdatawrite_range+0x2a5/0x390 [ 55.991111][ T8406] ? delete_from_page_cache_batch+0xe20/0xe20 [ 55.997297][ T8406] ? blkdev_put+0x86/0x580 [ 56.001739][ T8406] ? lock_downgrade+0x6e0/0x6e0 [ 56.006670][ T8406] filemap_write_and_wait_range+0xe1/0x1c0 [ 56.012483][ T8406] __blkdev_put+0x6b7/0x800 [ 56.017061][ T8406] ? __mutex_unlock_slowpath+0xe2/0x610 [ 56.022605][ T8406] ? freeze_bdev+0x250/0x250 [ 56.027238][ T8406] ? wait_for_completion_io+0x270/0x270 [ 56.032783][ T8406] ? _raw_spin_unlock+0x24/0x40 [ 56.037785][ T8406] ? locks_remove_file+0x312/0x560 [ 56.042911][ T8406] blkdev_put+0x92/0x580 [ 56.047205][ T8406] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 56.053465][ T8406] blkdev_close+0x8c/0xb0 [ 56.057847][ T8406] __fput+0x288/0x920 [ 56.061848][ T8406] ? blkdev_put+0x580/0x580 [ 56.066409][ T8406] task_work_run+0xdd/0x1a0 [ 56.070930][ T8406] do_exit+0xbfc/0x2a60 [ 56.075073][ T8406] ? find_held_lock+0x2d/0x110 [ 56.079869][ T8406] ? mm_update_next_owner+0x7a0/0x7a0 [ 56.085245][ T8406] ? get_signal+0x337/0x2150 [ 56.089875][ T8406] ? lock_downgrade+0x6e0/0x6e0 [ 56.094743][ T8406] do_group_exit+0x125/0x310 [ 56.099369][ T8406] get_signal+0x47f/0x2150 [ 56.103797][ T8406] ? futex_exit_release+0x220/0x220 [ 56.110060][ T8406] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.117229][ T8406] arch_do_signal_or_restart+0x2a8/0x1eb0 [ 56.123898][ T8406] ? find_held_lock+0x2d/0x110 [ 56.128762][ T8406] ? copy_siginfo_to_user32+0xa0/0xa0 [ 56.134575][ T8406] ? __do_sys_futex+0x2a2/0x470 [ 56.139511][ T8406] ? __do_sys_futex+0x2ab/0x470 [ 56.144368][ T8406] ? do_futex+0x1710/0x1710 [ 56.149290][ T8406] exit_to_user_mode_prepare+0x148/0x250 [ 56.155669][ T8406] syscall_exit_to_user_mode+0x19/0x60 [ 56.161649][ T8406] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 56.167660][ T8406] RIP: 0033:0x44afb9 [ 56.171713][ T8406] Code: Unable to access opcode bytes at RIP 0x44af8f. [ 56.179022][ T8406] RSP: 002b:00007f60d0e9e2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 56.188739][ T8406] RAX: fffffffffffffe00 RBX: 00000000004cc4e0 RCX: 000000000044afb9 [ 56.196793][ T8406] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cc4e8 [ 56.204996][ T8406] RBP: 00000000004cc4ec R08: 0000000000000000 R09: 0000000000000000 [ 56.213148][ T8406] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049c004 [ 56.221175][ T8406] R13: 6f6f6c2f7665642f R14: f821000000006cf9 R15: 00000000004cc4e8 [ 56.229998][ T8406] Kernel panic - not syncing: panic_on_warn set ... [ 56.236822][ T8406] CPU: 1 PID: 8406 Comm: syz-executor384 Not tainted 5.12.0-rc6-syzkaller #0 [ 56.246355][ T8406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.256606][ T8406] Call Trace: [ 56.259864][ T8406] dump_stack+0x141/0x1d7 [ 56.264182][ T8406] panic+0x306/0x73d [ 56.268060][ T8406] ? __warn_printk+0xf3/0xf3 [ 56.272636][ T8406] ? __warn.cold+0x1a/0x44 [ 56.277033][ T8406] ? submit_bio_checks+0x165c/0x1aa0 [ 56.282303][ T8406] __warn.cold+0x35/0x44 [ 56.286525][ T8406] ? wake_up_klogd.part.0+0x8e/0xd0 [ 56.291708][ T8406] ? submit_bio_checks+0x165c/0x1aa0 [ 56.296975][ T8406] report_bug+0x1bd/0x210 [ 56.301302][ T8406] handle_bug+0x3c/0x60 [ 56.305441][ T8406] exc_invalid_op+0x14/0x40 [ 56.309931][ T8406] asm_exc_invalid_op+0x12/0x20 [ 56.314774][ T8406] RIP: 0010:submit_bio_checks+0x165c/0x1aa0 [ 56.320677][ T8406] Code: 00 00 45 0f b6 a4 24 e0 05 00 00 48 8d 74 24 60 48 89 ef e8 c6 3e fe ff 48 c7 c7 20 09 c0 89 48 89 c6 44 89 e2 e8 a0 0b 0f 05 <0f> 0b e9 36 f3 ff ff e8 18 14 c1 fd 0f 0b e9 bf f1 ff ff e8 0c 14 [ 56.340793][ T8406] RSP: 0018:ffffc900016bf0d8 EFLAGS: 00010286 [ 56.346849][ T8406] RAX: 0000000000000000 RBX: ffff88814393e158 RCX: 0000000000000000 [ 56.354809][ T8406] RDX: ffff888014b70000 RSI: ffffffff815c4cb5 RDI: fffff520002d7e0d [ 56.362767][ T8406] RBP: ffff88801181cb40 R08: 0000000000000000 R09: 0000000000000000 [ 56.370725][ T8406] R10: ffffffff815bda4e R11: 0000000000000000 R12: 0000000000000000 [ 56.378683][ T8406] R13: ffff88801181cb50 R14: ffff8881427f4500 R15: ffff88814393e664 [ 56.386647][ T8406] ? wake_up_klogd.part.0+0x8e/0xd0 [ 56.391841][ T8406] ? vprintk_func+0x95/0x1e0 [ 56.396424][ T8406] ? submit_bio_checks+0x165c/0x1aa0 [ 56.401703][ T8406] ? trace_event_raw_event_block_rq_requeue+0x510/0x510 [ 56.409326][ T8406] ? __lock_acquire+0xb43/0x54c0 [ 56.414256][ T8406] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.420406][ T8406] submit_bio_noacct+0x81/0xf20 [ 56.425249][ T8406] ? blk_queue_enter+0xb50/0xb50 [ 56.430269][ T8406] ? bio_associate_blkg_from_css+0x563/0xf60 [ 56.436420][ T8406] ? lock_downgrade+0x6e0/0x6e0 [ 56.441377][ T8406] submit_bio+0x263/0x5e0 [ 56.445704][ T8406] ? submit_bio_noacct+0xf20/0xf20 [ 56.450807][ T8406] ? bio_add_page+0x186/0x1f0 [ 56.455479][ T8406] ? __bio_try_merge_page+0x350/0x350 [ 56.461023][ T8406] submit_bh_wbc+0x5eb/0x7f0 [ 56.465610][ T8406] __block_write_full_page+0x86c/0x1340 [ 56.471147][ T8406] ? bdev_disk_changed+0x3c0/0x3c0 [ 56.476256][ T8406] block_write_full_page+0x14d/0x190 [ 56.481534][ T8406] ? bdev_disk_changed+0x3c0/0x3c0 [ 56.486812][ T8406] __writepage+0x60/0x180 [ 56.491307][ T8406] write_cache_pages+0x759/0x11a0 [ 56.496326][ T8406] ? tag_pages_for_writeback+0x450/0x450 [ 56.501953][ T8406] ? clear_page_dirty_for_io+0xa10/0xa10 [ 56.507576][ T8406] ? free_zapped_rcu+0x2f1/0x310 [ 56.512508][ T8406] ? lock_chain_count+0x20/0x20 [ 56.517357][ T8406] ? __lock_acquire+0x16b3/0x54c0 [ 56.522384][ T8406] ? blkdev_readahead+0x20/0x20 [ 56.527229][ T8406] generic_writepages+0xe2/0x150 [ 56.532176][ T8406] ? write_cache_pages+0x11a0/0x11a0 [ 56.537539][ T8406] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.543707][ T8406] ? find_held_lock+0x2d/0x110 [ 56.548550][ T8406] do_writepages+0xec/0x290 [ 56.553046][ T8406] ? writeback_set_ratelimit+0x150/0x150 [ 56.558667][ T8406] ? do_raw_spin_lock+0x120/0x2b0 [ 56.563770][ T8406] ? do_raw_spin_unlock+0x171/0x230 [ 56.568965][ T8406] ? _raw_spin_unlock+0x24/0x40 [ 56.573803][ T8406] ? wbc_attach_and_unlock_inode+0x117/0x9e0 [ 56.579772][ T8406] __filemap_fdatawrite_range+0x2a5/0x390 [ 56.585488][ T8406] ? delete_from_page_cache_batch+0xe20/0xe20 [ 56.591557][ T8406] ? blkdev_put+0x86/0x580 [ 56.595964][ T8406] ? lock_downgrade+0x6e0/0x6e0 [ 56.600809][ T8406] filemap_write_and_wait_range+0xe1/0x1c0 [ 56.606607][ T8406] __blkdev_put+0x6b7/0x800 [ 56.611102][ T8406] ? __mutex_unlock_slowpath+0xe2/0x610 [ 56.616721][ T8406] ? freeze_bdev+0x250/0x250 [ 56.621300][ T8406] ? wait_for_completion_io+0x270/0x270 [ 56.626838][ T8406] ? _raw_spin_unlock+0x24/0x40 [ 56.631693][ T8406] ? locks_remove_file+0x312/0x560 [ 56.636798][ T8406] blkdev_put+0x92/0x580 [ 56.641031][ T8406] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 56.647263][ T8406] blkdev_close+0x8c/0xb0 [ 56.651582][ T8406] __fput+0x288/0x920 [ 56.655554][ T8406] ? blkdev_put+0x580/0x580 [ 56.660050][ T8406] task_work_run+0xdd/0x1a0 [ 56.664550][ T8406] do_exit+0xbfc/0x2a60 [ 56.668702][ T8406] ? find_held_lock+0x2d/0x110 [ 56.673471][ T8406] ? mm_update_next_owner+0x7a0/0x7a0 [ 56.678834][ T8406] ? get_signal+0x337/0x2150 [ 56.683500][ T8406] ? lock_downgrade+0x6e0/0x6e0 [ 56.688358][ T8406] do_group_exit+0x125/0x310 [ 56.692964][ T8406] get_signal+0x47f/0x2150 [ 56.697469][ T8406] ? futex_exit_release+0x220/0x220 [ 56.702658][ T8406] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 56.708629][ T8406] arch_do_signal_or_restart+0x2a8/0x1eb0 [ 56.714343][ T8406] ? find_held_lock+0x2d/0x110 [ 56.719099][ T8406] ? copy_siginfo_to_user32+0xa0/0xa0 [ 56.724464][ T8406] ? __do_sys_futex+0x2a2/0x470 [ 56.729298][ T8406] ? __do_sys_futex+0x2ab/0x470 [ 56.734139][ T8406] ? do_futex+0x1710/0x1710 [ 56.738638][ T8406] exit_to_user_mode_prepare+0x148/0x250 [ 56.744349][ T8406] syscall_exit_to_user_mode+0x19/0x60 [ 56.749799][ T8406] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 56.755680][ T8406] RIP: 0033:0x44afb9 [ 56.759558][ T8406] Code: Unable to access opcode bytes at RIP 0x44af8f. [ 56.766381][ T8406] RSP: 002b:00007f60d0e9e2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 56.774786][ T8406] RAX: fffffffffffffe00 RBX: 00000000004cc4e0 RCX: 000000000044afb9 [ 56.782745][ T8406] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cc4e8 [ 56.790704][ T8406] RBP: 00000000004cc4ec R08: 0000000000000000 R09: 0000000000000000 [ 56.798660][ T8406] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049c004 [ 56.806636][ T8406] R13: 6f6f6c2f7665642f R14: f821000000006cf9 R15: 00000000004cc4e8 [ 56.818477][ T8406] Kernel Offset: disabled [ 56.823076][ T8406] Rebooting in 86400 seconds..