Warning: Permanently added '10.128.1.109' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.079941][ T8353] IPVS: ftp: loaded support on port[0] = 21 [ 48.129304][ T8376] loop0: detected capacity change from 0 to 519 [ 48.196985][ T8381] ------------[ cut here ]------------ [ 48.202554][ T8381] Trying to write to read-only block-device loop0 (partno 0) [ 48.214948][ T8381] WARNING: CPU: 1 PID: 8381 at block/blk-core.c:706 submit_bio_checks+0x110b/0x1600 [ 48.224425][ T8381] Modules linked in: [ 48.229777][ T8381] CPU: 1 PID: 8381 Comm: syz-executor987 Not tainted 5.12.0-rc6-syzkaller #0 [ 48.242391][ T8381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.253615][ T8381] RIP: 0010:submit_bio_checks+0x110b/0x1600 [ 48.260427][ T8381] Code: 03 48 b9 00 00 00 00 00 fc ff df 8a 04 08 84 c0 0f 85 e8 04 00 00 0f b6 13 48 c7 c7 e0 3b 0f 8a 4c 89 f6 31 c0 e8 f5 e4 88 fd <0f> 0b 4c 8b 6c 24 10 49 be 00 00 00 00 00 fc ff df e9 bd f2 ff ff [ 48.280916][ T8381] RSP: 0018:ffffc9000166f3c0 EFLAGS: 00010246 [ 48.287502][ T8381] RAX: 11bd8c14abd8f300 RBX: ffff888016af4ae0 RCX: ffff88801e700000 [ 48.296947][ T8381] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 48.305097][ T8381] RBP: ffffc9000166f480 R08: ffffffff8160b632 R09: ffffed10173a5fe8 [ 48.313205][ T8381] R10: ffffed10173a5fe8 R11: 0000000000000000 R12: ffff888022727788 [ 48.321947][ T8381] R13: ffff888022727780 R14: ffffc9000166f420 R15: 1ffff110044e4ef1 [ 48.330054][ T8381] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 48.339111][ T8381] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.345873][ T8381] CR2: 000055cc83c47160 CR3: 000000000c48e000 CR4: 00000000001506f0 [ 48.353877][ T8381] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.362082][ T8381] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.370267][ T8381] Call Trace: [ 48.373572][ T8381] submit_bio_noacct+0x36/0x1020 [ 48.379618][ T8381] ? bio_add_page+0x2e9/0x470 [ 48.384310][ T8381] ? rcu_lock_release+0x5/0x20 [ 48.389169][ T8381] submit_bio+0x1a4/0x640 [ 48.393504][ T8381] __block_write_full_page+0x8fb/0x10a0 [ 48.399096][ T8381] ? mark_buffer_write_io_error+0x340/0x340 [ 48.405295][ T8381] ? blkdev_direct_IO+0x150/0x150 [ 48.410409][ T8381] __writepage+0x60/0x120 [ 48.414796][ T8381] write_cache_pages+0x8b7/0xdc0 [ 48.419740][ T8381] ? generic_writepages+0xd0/0xd0 [ 48.425038][ T8381] generic_writepages+0x8f/0xd0 [ 48.429924][ T8381] ? blkdev_readpage+0x20/0x20 [ 48.434782][ T8381] do_writepages+0xda/0x1f0 [ 48.439336][ T8381] ? __filemap_fdatawrite_range+0x299/0x350 [ 48.445320][ T8381] __filemap_fdatawrite_range+0x2a4/0x350 [ 48.451046][ T8381] filemap_write_and_wait_range+0xca/0x160 [ 48.456910][ T8381] __blkdev_put+0x103/0x670 [ 48.461416][ T8381] ? __mutex_unlock_slowpath+0x12d/0x520 [ 48.467148][ T8381] ? dput+0x641/0x6f0 [ 48.471150][ T8381] blkdev_put+0x2cd/0x440 [ 48.475526][ T8381] blkdev_close+0x7a/0xa0 [ 48.479853][ T8381] ? blkdev_open+0x2c0/0x2c0 [ 48.484500][ T8381] __fput+0x352/0x7b0 [ 48.488502][ T8381] task_work_run+0x146/0x1c0 [ 48.493086][ T8381] do_exit+0x6b2/0x2290 [ 48.497313][ T8381] ? get_signal+0x16ef/0x2030 [ 48.501991][ T8381] do_group_exit+0x168/0x2d0 [ 48.507693][ T8381] ? lockdep_hardirqs_on+0x8d/0x130 [ 48.512926][ T8381] get_signal+0x186f/0x2030 [ 48.517631][ T8381] arch_do_signal_or_restart+0x41/0x620 [ 48.523305][ T8381] ? exit_to_user_mode_prepare+0x49/0x1e0 [ 48.529168][ T8381] exit_to_user_mode_prepare+0xac/0x1e0 [ 48.535021][ T8381] ? trace_irq_disable_rcuidle+0x11/0x170 [ 48.540791][ T8381] syscall_exit_to_user_mode+0x26/0x70 [ 48.546359][ T8381] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.552255][ T8381] RIP: 0033:0x44a6a9 [ 48.556458][ T8381] Code: Unable to access opcode bytes at RIP 0x44a67f. [ 48.563327][ T8381] RSP: 002b:00007f35af3802f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 48.571849][ T8381] RAX: fffffffffffffe00 RBX: 00000000004cb4f0 RCX: 000000000044a6a9 [ 48.580011][ T8381] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb4f8 [ 48.588103][ T8381] RBP: 00000000004cb4fc R08: 0000000000000000 R09: 0000000000000000 [ 48.596242][ T8381] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049b004 [ 48.604562][ T8381] R13: 6f6f6c2f7665642f R14: f821000000006cf9 R15: 00000000004cb4f8 [ 48.612611][ T8381] Kernel panic - not syncing: panic_on_warn set ... [ 48.619202][ T8381] CPU: 0 PID: 8381 Comm: syz-executor987 Not tainted 5.12.0-rc6-syzkaller #0 [ 48.627968][ T8381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.638030][ T8381] Call Trace: [ 48.641318][ T8381] dump_stack+0x176/0x24e [ 48.645662][ T8381] panic+0x291/0x800 [ 48.649583][ T8381] ? __warn+0x13e/0x270 [ 48.653763][ T8381] __warn+0x26a/0x270 [ 48.657755][ T8381] ? submit_bio_checks+0x110b/0x1600 [ 48.663026][ T8381] ? submit_bio_checks+0x110b/0x1600 [ 48.668291][ T8381] report_bug+0x1b1/0x2e0 [ 48.672606][ T8381] handle_bug+0x3d/0x70 [ 48.676747][ T8381] exc_invalid_op+0x16/0x40 [ 48.681231][ T8381] asm_exc_invalid_op+0x12/0x20 [ 48.686083][ T8381] RIP: 0010:submit_bio_checks+0x110b/0x1600 [ 48.691957][ T8381] Code: 03 48 b9 00 00 00 00 00 fc ff df 8a 04 08 84 c0 0f 85 e8 04 00 00 0f b6 13 48 c7 c7 e0 3b 0f 8a 4c 89 f6 31 c0 e8 f5 e4 88 fd <0f> 0b 4c 8b 6c 24 10 49 be 00 00 00 00 00 fc ff df e9 bd f2 ff ff [ 48.711542][ T8381] RSP: 0018:ffffc9000166f3c0 EFLAGS: 00010246 [ 48.717595][ T8381] RAX: 11bd8c14abd8f300 RBX: ffff888016af4ae0 RCX: ffff88801e700000 [ 48.725548][ T8381] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 48.733586][ T8381] RBP: ffffc9000166f480 R08: ffffffff8160b632 R09: ffffed10173a5fe8 [ 48.741642][ T8381] R10: ffffed10173a5fe8 R11: 0000000000000000 R12: ffff888022727788 [ 48.749596][ T8381] R13: ffff888022727780 R14: ffffc9000166f420 R15: 1ffff110044e4ef1 [ 48.757552][ T8381] ? wake_up_klogd+0xb2/0xf0 [ 48.762138][ T8381] submit_bio_noacct+0x36/0x1020 [ 48.767059][ T8381] ? bio_add_page+0x2e9/0x470 [ 48.771717][ T8381] ? rcu_lock_release+0x5/0x20 [ 48.776468][ T8381] submit_bio+0x1a4/0x640 [ 48.780785][ T8381] __block_write_full_page+0x8fb/0x10a0 [ 48.786313][ T8381] ? mark_buffer_write_io_error+0x340/0x340 [ 48.792187][ T8381] ? blkdev_direct_IO+0x150/0x150 [ 48.797293][ T8381] __writepage+0x60/0x120 [ 48.801615][ T8381] write_cache_pages+0x8b7/0xdc0 [ 48.806537][ T8381] ? generic_writepages+0xd0/0xd0 [ 48.811549][ T8381] generic_writepages+0x8f/0xd0 [ 48.816378][ T8381] ? blkdev_readpage+0x20/0x20 [ 48.821207][ T8381] do_writepages+0xda/0x1f0 [ 48.825691][ T8381] ? __filemap_fdatawrite_range+0x299/0x350 [ 48.831567][ T8381] __filemap_fdatawrite_range+0x2a4/0x350 [ 48.837273][ T8381] filemap_write_and_wait_range+0xca/0x160 [ 48.843062][ T8381] __blkdev_put+0x103/0x670 [ 48.847545][ T8381] ? __mutex_unlock_slowpath+0x12d/0x520 [ 48.853159][ T8381] ? dput+0x641/0x6f0 [ 48.857123][ T8381] blkdev_put+0x2cd/0x440 [ 48.861435][ T8381] blkdev_close+0x7a/0xa0 [ 48.865745][ T8381] ? blkdev_open+0x2c0/0x2c0 [ 48.870313][ T8381] __fput+0x352/0x7b0 [ 48.874287][ T8381] task_work_run+0x146/0x1c0 [ 48.878893][ T8381] do_exit+0x6b2/0x2290 [ 48.883028][ T8381] ? get_signal+0x16ef/0x2030 [ 48.887689][ T8381] do_group_exit+0x168/0x2d0 [ 48.892256][ T8381] ? lockdep_hardirqs_on+0x8d/0x130 [ 48.897447][ T8381] get_signal+0x186f/0x2030 [ 48.901945][ T8381] arch_do_signal_or_restart+0x41/0x620 [ 48.907475][ T8381] ? exit_to_user_mode_prepare+0x49/0x1e0 [ 48.913175][ T8381] exit_to_user_mode_prepare+0xac/0x1e0 [ 48.918700][ T8381] ? trace_irq_disable_rcuidle+0x11/0x170 [ 48.924412][ T8381] syscall_exit_to_user_mode+0x26/0x70 [ 48.929852][ T8381] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.935728][ T8381] RIP: 0033:0x44a6a9 [ 48.939602][ T8381] Code: Unable to access opcode bytes at RIP 0x44a67f. [ 48.946422][ T8381] RSP: 002b:00007f35af3802f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 48.954816][ T8381] RAX: fffffffffffffe00 RBX: 00000000004cb4f0 RCX: 000000000044a6a9 [ 48.962787][ T8381] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb4f8 [ 48.970754][ T8381] RBP: 00000000004cb4fc R08: 0000000000000000 R09: 0000000000000000 [ 48.978706][ T8381] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049b004 [ 48.986687][ T8381] R13: 6f6f6c2f7665642f R14: f821000000006cf9 R15: 00000000004cb4f8 [ 48.995383][ T8381] Kernel Offset: disabled [ 48.999804][ T8381] Rebooting in 86400 seconds..