Warning: Permanently added '10.128.1.102' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.635328] F2FS-fs (loop0): Invalid blocksize (65536), supports only 4KB [ 36.635328] [ 36.643956] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 36.656138] F2FS-fs (loop0): Found nat_bits in checkpoint [ 36.691977] F2FS-fs (loop0): Mounted with checkpoint version = 3e17dab1 executing program [ 36.945903] kasan: CONFIG_KASAN_INLINE enabled [ 36.950678] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.958148] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.964365] Modules linked in: [ 36.967539] CPU: 0 PID: 22 Comm: kworker/u4:1 Not tainted 4.14.299-syzkaller #0 [ 36.974959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 36.984296] Workqueue: writeback wb_workfn (flush-7:0) [ 36.989550] task: ffff8880b55ee5c0 task.stack: ffff8880b55f8000 [ 36.995587] RIP: 0010:update_sit_entry+0x684/0x1560 [ 37.000573] RSP: 0018:ffff8880b55ff1b8 EFLAGS: 00010246 [ 37.005912] RAX: dffffc0000000000 RBX: ffff8880b336e5c0 RCX: 000000000000007c [ 37.013155] RDX: 0000000000000000 RSI: 1ffff110145be4c4 RDI: ffff8880b3121730 [ 37.020398] RBP: ffff8880b3121710 R08: ffff8880b3048780 R09: ffffed1012b40535 [ 37.027644] R10: ffff888095a029a9 R11: ffff8880b55ee5c0 R12: 0000000000000000 [ 37.034891] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000001 [ 37.042139] FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 37.050341] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.056198] CR2: 00007f0a28ad2fb0 CR3: 000000009a7c1000 CR4: 00000000003406f0 [ 37.063459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.070709] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.078127] Call Trace: [ 37.080696] refresh_sit_entry+0x2c/0x730 [ 37.084827] allocate_data_block+0x47d/0xf60 [ 37.089213] do_write_page+0x222/0x7f0 [ 37.093079] write_data_page+0x15d/0x3a0 [ 37.097126] ? write_node_page+0x230/0x230 [ 37.101342] do_write_data_page+0xc63/0x2ca0 [ 37.105725] ? f2fs_fiemap+0x700/0x700 [ 37.109588] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.115011] __write_data_page+0x115a/0x1480 [ 37.119394] ? do_write_data_page+0x2ca0/0x2ca0 [ 37.124038] ? lock_downgrade+0x740/0x740 [ 37.128163] f2fs_write_cache_pages+0x40d/0xe50 [ 37.132824] ? __mutex_unlock_slowpath+0x75/0x770 [ 37.137655] ? __write_data_page+0x1480/0x1480 [ 37.142217] ? __lock_acquire+0x5fc/0x3f20 [ 37.146430] ? __lock_acquire+0x5fc/0x3f20 [ 37.150641] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.156072] __f2fs_write_data_pages+0x2e2/0xb90 [ 37.160811] ? f2fs_write_data_page+0x30/0x30 [ 37.165280] ? trace_hardirqs_on+0x10/0x10 [ 37.169488] ? unwind_next_frame+0x404/0x17d0 [ 37.173959] ? __f2fs_write_data_pages+0xb90/0xb90 [ 37.178871] do_writepages+0xc3/0x240 [ 37.182650] ? page_writeback_cpu_online+0x10/0x10 [ 37.187559] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.192986] __writeback_single_inode+0xda/0x1010 [ 37.197806] writeback_sb_inodes+0x48b/0xd30 [ 37.202190] ? wbc_detach_inode+0x780/0x780 [ 37.206491] ? queue_io+0x400/0x5a0 [ 37.210097] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.215528] wb_writeback+0x243/0xb80 [ 37.219306] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 37.224916] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.230341] wb_workfn+0x2bd/0xf50 [ 37.233863] ? process_one_work+0x6c4/0x14a0 [ 37.238245] ? inode_wait_for_writeback+0x30/0x30 [ 37.243063] ? lock_acquire+0x170/0x3f0 [ 37.247012] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 37.252454] process_one_work+0x793/0x14a0 [ 37.256678] ? work_busy+0x320/0x320 [ 37.260371] ? worker_thread+0x158/0xff0 [ 37.264412] ? _raw_spin_unlock_irq+0x24/0x80 [ 37.268888] worker_thread+0x5cc/0xff0 [ 37.272884] ? rescuer_thread+0xc80/0xc80 [ 37.277016] kthread+0x30d/0x420 [ 37.280358] ? kthread_create_on_node+0xd0/0xd0 [ 37.285003] ret_from_fork+0x24/0x30 [ 37.288690] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 6c 0e 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 75 20 4d 01 e6 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 4c 89 f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 57 0e 00 [ 37.307780] RIP: update_sit_entry+0x684/0x1560 RSP: ffff8880b55ff1b8 [ 37.314640] ---[ end trace eec8cf03e5f7b5aa ]--- [ 37.319635] Kernel panic - not syncing: Fatal exception [ 37.325140] Kernel Offset: disabled [ 37.328753] Rebooting in 86400 seconds..