Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.563605] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 45.575162] audit: type=1800 audit(1652124299.461:2): pid=8118 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor425" name="bus" dev="loop0" ino=17 res=0 [ 45.610790] ------------[ cut here ]------------ [ 45.615615] kernel BUG at fs/ext4/inode.c:2794! [ 45.620555] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 45.625917] CPU: 1 PID: 8118 Comm: syz-executor425 Not tainted 4.19.211-syzkaller #0 [ 45.633781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.643139] RIP: 0010:ext4_writepages+0x2d31/0x37f0 [ 45.648138] Code: 00 fc ff df 44 89 64 24 18 48 c1 ea 03 80 3c 02 00 0f 84 25 da ff ff 48 8b 3c 24 e8 89 2d b8 ff e9 17 da ff ff e8 8f 50 82 ff <0f> 0b 4c 8b b4 24 20 01 00 00 e8 80 50 82 ff 0f b6 ac 24 50 02 00 [ 45.667020] RSP: 0018:ffff88809f317588 EFLAGS: 00010293 [ 45.672361] RAX: ffff8880b0f46040 RBX: 0000000000000001 RCX: ffffffff81e03070 [ 45.679620] RDX: 0000000000000000 RSI: ffffffff81e034e1 RDI: 0000000000000007 [ 45.686878] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 45.694137] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000001 [ 45.701391] R13: dffffc0000000000 R14: ffff88808dbe87f0 R15: 0000000000000000 [ 45.708641] FS: 00005555571a3300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 45.716843] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.722721] CR2: 000055c7d16138e0 CR3: 000000009724b000 CR4: 00000000003406e0 [ 45.729969] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 45.737221] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 45.744468] Call Trace: [ 45.747047] ? ext4_mark_iloc_dirty+0x1b0d/0x2b30 [ 45.751872] ? check_preemption_disabled+0x41/0x280 [ 45.756866] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 45.761877] ? ext4_mark_inode_dirty+0x870/0x870 [ 45.766612] ? dirty_poll_interval.part.0+0xd/0x30 [ 45.771522] ? balance_dirty_pages+0x11a1/0x28a0 [ 45.776257] ? __lock_acquire+0x6de/0x3ff0 [ 45.780470] ? ext4_chunk_trans_blocks+0x30/0x30 [ 45.785202] ? wb_position_ratio+0x540/0x540 [ 45.789591] ? mark_held_locks+0xf0/0xf0 [ 45.793631] ? ext4_mark_inode_dirty+0x222/0x870 [ 45.798369] ? ext4_mark_inode_dirty+0x870/0x870 [ 45.803100] do_writepages+0xe5/0x290 [ 45.806882] ? page_writeback_cpu_online+0x10/0x10 [ 45.811789] ? do_raw_spin_unlock+0x171/0x230 [ 45.816261] ? _raw_spin_unlock+0x29/0x40 [ 45.820389] ? wbc_attach_and_unlock_inode+0x11d/0x9e0 [ 45.825651] __filemap_fdatawrite_range+0x27d/0x350 [ 45.830646] ? delete_from_page_cache_batch+0xcc0/0xcc0 [ 45.835990] ? generic_perform_write+0x36c/0x4d0 [ 45.840726] file_write_and_wait_range+0x93/0x100 [ 45.845547] __generic_file_fsync+0x74/0x1f0 [ 45.849937] ext4_sync_file+0xa35/0x1420 [ 45.853977] ? ext4_getfsmap+0x980/0x980 [ 45.858016] vfs_fsync_range+0x13a/0x220 [ 45.862060] ext4_file_write_iter+0x726/0xf20 [ 45.866533] ? ext4_file_open+0x600/0x600 [ 45.870660] ? mark_held_locks+0xf0/0xf0 [ 45.874699] ? mark_held_locks+0xf0/0xf0 [ 45.878737] ? debug_check_no_obj_freed+0x201/0x490 [ 45.883734] __vfs_write+0x51b/0x770 [ 45.887425] ? common_file_perm+0x4e5/0x850 [ 45.891726] ? kernel_read+0x110/0x110 [ 45.895596] ? check_preemption_disabled+0x41/0x280 [ 45.900592] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 45.905587] vfs_write+0x1f3/0x540 [ 45.909106] ksys_write+0x12b/0x2a0 [ 45.912710] ? __ia32_sys_read+0xb0/0xb0 [ 45.916751] ? trace_hardirqs_off_caller+0x6e/0x210 [ 45.921751] ? do_syscall_64+0x21/0x620 [ 45.925701] do_syscall_64+0xf9/0x620 [ 45.929484] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.934654] RIP: 0033:0x7f1754a40089 [ 45.938357] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 45.957245] RSP: 002b:00007ffccdee1358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 45.964933] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f1754a40089 [ 45.972186] RDX: 0000000000000016 RSI: 0000000020002580 RDI: 0000000000000007 [ 45.979434] RBP: 00007f17549ff920 R08: 0000000000000000 R09: 0000000000000000 [ 45.986681] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f17549ff9b0 [ 45.993927] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 46.001179] Modules linked in: [ 46.004584] ---[ end trace 9e375bfa25447493 ]--- [ 46.009356] RIP: 0010:ext4_writepages+0x2d31/0x37f0 [ 46.014805] Code: 00 fc ff df 44 89 64 24 18 48 c1 ea 03 80 3c 02 00 0f 84 25 da ff ff 48 8b 3c 24 e8 89 2d b8 ff e9 17 da ff ff e8 8f 50 82 ff <0f> 0b 4c 8b b4 24 20 01 00 00 e8 80 50 82 ff 0f b6 ac 24 50 02 00 [ 46.034262] RSP: 0018:ffff88809f317588 EFLAGS: 00010293 [ 46.039615] RAX: ffff8880b0f46040 RBX: 0000000000000001 RCX: ffffffff81e03070 [ 46.046918] RDX: 0000000000000000 RSI: ffffffff81e034e1 RDI: 0000000000000007 [ 46.054288] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 46.061668] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000001 [ 46.068931] R13: dffffc0000000000 R14: ffff88808dbe87f0 R15: 0000000000000000 [ 46.076269] FS: 00005555571a3300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 46.084529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.090413] CR2: 000055c7d16138e0 CR3: 000000009724b000 CR4: 00000000003406e0 [ 46.097745] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.105056] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.112360] Kernel panic - not syncing: Fatal exception [ 46.117887] Kernel Offset: disabled [ 46.121498] Rebooting in 86400 seconds..