Warning: Permanently added '10.128.1.50' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   52.011566][ T8117] ------------[ cut here ]------------
[   52.018924][ T8117] generic_make_request: Trying to write to read-only block-device nullb0 (partno 0)
[   52.019139][ T8117] WARNING: CPU: 0 PID: 8117 at block/blk-core.c:803 generic_make_request_checks+0x636/0x1540
[   52.031563][ T4086] kobject: 'nullb0' (000000008c6abf69): fill_kobj_path: path = '/devices/virtual/block/nullb0'
[   52.043444][ T8117] Kernel panic - not syncing: panic_on_warn set ...
[   52.043463][ T8117] CPU: 0 PID: 8117 Comm: syz-executor029 Not tainted 5.4.0-syzkaller #0
[   52.043468][ T8117] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.043472][ T8117] Call Trace:
[   52.043496][ T8117]  dump_stack+0x1fb/0x318
[   52.043510][ T8117]  panic+0x264/0x7a9
[   52.043518][ T8117]  ? __warn+0x105/0x210
[   52.043533][ T8117]  ? generic_make_request_checks+0x636/0x1540
[   52.043543][ T8117]  __warn+0x20e/0x210
[   52.043552][ T8117]  ? generic_make_request_checks+0x636/0x1540
[   52.043563][ T8117]  report_bug+0x1b6/0x2f0
[   52.043581][ T8117]  ? generic_make_request_checks+0x636/0x1540
[   52.124066][ T8117]  do_error_trap+0xd7/0x440
[   52.130304][ T8117]  do_invalid_op+0x36/0x40
[   52.135530][ T8117]  ? generic_make_request_checks+0x636/0x1540
[   52.149537][ T8117]  invalid_op+0x23/0x30
[   52.153987][ T8117] RIP: 0010:generic_make_request_checks+0x636/0x1540
[   52.160825][ T8117] Code: 5c 05 00 00 4c 89 f8 48 c1 e8 03 8a 04 08 84 c0 0f 85 f8 0e 00 00 41 8b 17 48 c7 c7 8d 3a c8 88 4c 89 f6 31 c0 e8 ba e9 cd fd <0f> 0b e9 2d fc ff ff e8 de d1 fb fd c6 05 4e f4 c4 05 01 48 c7 c7
[   52.187835][ T8117] RSP: 0018:ffff88808ea97450 EFLAGS: 00010246
[   52.210063][ T8117] RAX: 383e45848dfe2f00 RBX: 0000000000000001 RCX: ffff888097b1e500
[   52.218032][ T8117] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
[   52.225986][ T8117] RBP: ffff88808ea97510 R08: ffffffff815fa3f4 R09: ffffed1015d4458a
[   52.235817][ T8117] R10: ffffed1015d4458a R11: 0000000000000000 R12: 1ffff110145bef21
[   52.246300][ T8117] R13: ffff8880a2df7908 R14: ffff88808ea974b0 R15: ffff8880a27a155c
[   52.255944][ T8117]  ? vprintk_emit+0x2d4/0x3a0
[   52.260619][ T8117]  ? rcu_lock_release+0xd/0x30
[   52.265886][ T8117]  generic_make_request+0x33/0x980
[   52.270984][ T8117]  ? rcu_lock_release+0xd/0x30
[   52.280856][ T8117]  submit_bio+0x26b/0x540
[   52.285501][ T8117]  ? wbc_account_cgroup_owner+0x110/0x340
[   52.291854][ T8117]  ? bio_associate_blkg_from_css+0x1c4/0x1d0
[   52.298385][ T8117]  submit_bh_wbc+0x619/0x700
[   52.302989][ T8117]  __block_write_full_page+0x943/0x1070
[   52.308777][ T8117]  ? blkdev_direct_IO+0xd0/0xd0
[   52.314140][ T8117]  ? mark_buffer_write_io_error+0x160/0x160
[   52.320423][ T8117]  block_write_full_page+0x1a4/0x220
[   52.326243][ T8117]  ? blkdev_direct_IO+0xd0/0xd0
[   52.331089][ T8117]  blkdev_writepage+0x24/0x30
[   52.335751][ T8117]  __writepage+0x63/0xd0
[   52.339987][ T8117]  write_cache_pages+0x94a/0xe70
[   52.344996][ T8117]  ? generic_writepages+0xd0/0xd0
[   52.351268][ T8117]  ? wbc_attach_and_unlock_inode+0x3a0/0x5d0
[   52.357351][ T8117]  generic_writepages+0x93/0xd0
[   52.362399][ T8117]  blkdev_writepages+0x1d/0x30
[   52.367189][ T8117]  ? blkdev_readpage+0x20/0x20
[   52.372082][ T8117]  do_writepages+0xfb/0x1f0
[   52.377633][ T8117]  ? wbc_attach_and_unlock_inode+0x3f0/0x5d0
[   52.383931][ T8117]  __filemap_fdatawrite_range+0x2c2/0x360
[   52.389817][ T8117]  filemap_write_and_wait+0xca/0x160
[   52.396093][ T8117]  __blkdev_put+0x1a2/0x6d0
[   52.400707][ T8117]  ? __mutex_unlock_slowpath+0x13c/0x5b0
[   52.406752][ T8117]  blkdev_put+0x2c8/0x3b0
[   52.411218][ T8117]  blkdev_close+0x7b/0xa0
[   52.415649][ T8117]  ? blkdev_open+0x2c0/0x2c0
[   52.420374][ T8117]  __fput+0x2e4/0x740
[   52.424590][ T8117]  ____fput+0x15/0x20
[   52.428943][ T8117]  task_work_run+0x17e/0x1b0
[   52.434735][ T8117]  do_exit+0x5c4/0x2020
[   52.438980][ T8117]  ? block_ioctl+0xbd/0x100
[   52.444121][ T8117]  ? check_preemption_disabled+0xb4/0x260
[   52.450483][ T8117]  do_group_exit+0x15c/0x2b0
[   52.456051][ T8117]  __do_sys_exit_group+0x17/0x20
[   52.461062][ T8117]  __se_sys_exit_group+0x14/0x20
[   52.466105][ T8117]  __x64_sys_exit_group+0x3b/0x40
[   52.471476][ T8117]  do_syscall_64+0xf7/0x1c0
[   52.476083][ T8117]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   52.482154][ T8117] RIP: 0033:0x43edf8
[   52.486160][ T8117] Code: Bad RIP value.
[   52.490308][ T8117] RSP: 002b:00007ffe99417018 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   52.499070][ T8117] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043edf8
[   52.507031][ T8117] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
[   52.515727][ T8117] RBP: 00000000004be608 R08: 00000000000000e7 R09: ffffffffffffffd0
[   52.524329][ T8117] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000001
[   52.532380][ T8117] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000
[   52.542295][ T8117] Kernel Offset: disabled
[   52.546850][ T8117] Rebooting in 86400 seconds..