[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 51.653680] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 51.662853] EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue [ 51.678142] EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue [ 51.686017] EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue [ 51.694896] audit: type=1804 audit(1667652064.078:2): pid=8009 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor351" name="/root/file0/bus" dev="loop5" ino=18 res=1 [ 51.724181] EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue [ 51.738093] EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue [ 51.752850] audit: type=1804 audit(1667652064.078:3): pid=7996 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor351" name="/root/file0/bus" dev="loop1" ino=18 res=1 [ 51.778504] EXT4-fs error (device loop1): ext4_validate_block_bitmap:405: comm syz-executor351: bg 0: block 5: invalid block bitmap [ 51.793305] EXT4-fs error (device loop1) in ext4_free_blocks:5010: Corrupt filesystem [ 51.800202] EXT4-fs error (device loop0): ext4_validate_block_bitmap:405: comm syz-executor351: bg 0: block 5: invalid block bitmap [ 51.802777] EXT4-fs error (device loop3): ext4_validate_block_bitmap:405: comm syz-executor351: bg 0: block 5: invalid block bitmap [ 51.813588] EXT4-fs error (device loop5): ext4_validate_block_bitmap:405: comm syz-executor351: bg 0: block 5: invalid block bitmap [ 51.837740] EXT4-fs error (device loop4): ext4_validate_block_bitmap:405: comm syz-executor351: bg 0: block 5: invalid block bitmap [ 51.850979] EXT4-fs error (device loop2): ext4_validate_block_bitmap:405: comm syz-executor351: bg 0: block 5: invalid block bitmap [ 51.864163] ------------[ cut here ]------------ [ 51.869081] kernel BUG at fs/ext4/inline.c:231! [ 51.873915] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 51.879358] Modules linked in: [ 51.882545] CPU: 0 PID: 8040 Comm: syz-executor351 Not tainted 4.14.298-syzkaller #0 [ 51.890415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 51.899726] EXT4-fs error (device loop0) in ext4_free_blocks:5010: Corrupt filesystem [ 51.899755] task: ffff88809532a240 task.stack: ffff8880b3bf8000 [ 51.899767] RIP: 0010:ext4_write_inline_data+0x2e6/0x380 [ 51.899773] RSP: 0018:ffff8880b3bff460 EFLAGS: 00010297 [ 51.908697] EXT4-fs (loop0): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1022 with error 28 [ 51.913754] RAX: ffff88809532a240 RBX: ffff8880a3fb1930 RCX: 000000000000000b [ 51.913758] RDX: 0000000000000000 RSI: ffff8880b3bff4e8 RDI: ffff8880a3fb1df8 [ 51.913761] RBP: 000000000000000b R08: 0000000000000ff5 R09: 0000000000000000 [ 51.913764] R10: ffff8880b3bff438 R11: 0000000000000000 R12: 0000000000000ff5 [ 51.913767] R13: ffff8880b3bff4e8 R14: ffff8880a3fb1df6 R15: ffff8880a3fb1798 [ 51.913772] FS: 00007f5b2f89c700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 51.913776] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.913779] CR2: 0000561b81db93c8 CR3: 00000000b3dd5000 CR4: 00000000003406f0 [ 51.913786] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.913792] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.919246] EXT4-fs (loop0): This should not happen!! Data will be lost [ 51.919246] [ 51.924549] Call Trace: [ 51.924566] ext4_write_inline_data_end+0x1db/0x490 [ 51.924575] ? ext4_try_to_write_inline_data+0x1590/0x1590 [ 51.924583] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 51.924590] ext4_write_end+0x18d/0xca0 [ 51.924597] ? memcpy+0x35/0x50 [ 51.924604] ext4_da_write_end+0x6da/0x8e0 [ 51.924617] generic_perform_write+0x268/0x420 [ 51.976220] EXT4-fs (loop0): Total free blocks count 0 [ 51.980765] ? __mnt_drop_write_file+0x5f/0x90 [ 51.980773] ? filemap_page_mkwrite+0x2d0/0x2d0 [ 51.980781] ? current_time+0xb0/0xb0 [ 51.980790] __generic_file_write_iter+0x227/0x590 [ 51.980798] ext4_file_write_iter+0x276/0xd20 [ 51.980806] ? aa_path_link+0x3a0/0x3a0 [ 51.980816] ? direct_splice_actor+0x115/0x160 [ 51.989685] EXT4-fs error (device loop5) in ext4_free_blocks:5010: Corrupt filesystem [ 51.993936] ? splice_direct_to_actor+0x27c/0x730 [ 51.993943] ? do_splice_direct+0x164/0x210 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory [ 51.993951] ? ext4_file_read_iter+0x330/0x330 [ 51.993961] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.016522] EXT4-fs (loop5): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 774 with error 28 [ 52.016673] ? ext4_journal_check_start+0x13d/0x1e0 [ 52.019351] EXT4-fs (loop5): This should not happen!! Data will be lost [ 52.019351] [ 52.024225] ? trace_hardirqs_on+0x10/0x10 [ 52.024239] do_iter_readv_writev+0x4cf/0x5f0 [ 52.024248] ? clone_verify_area+0x1e0/0x1e0 [ 52.024258] ? rw_verify_area+0xe1/0x2a0 [ 52.024265] do_iter_write+0x152/0x550 [ 52.024274] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 52.024281] vfs_iter_write+0x70/0xa0 [ 52.024290] iter_file_splice_write+0x52b/0xa90 [ 52.052185] EXT4-fs (loop0): Free/Dirty block details [ 52.056558] ? splice_from_pipe_next.part.0+0x2f0/0x2f0 [ 52.056572] ? rw_verify_area+0xe1/0x2a0 [ 52.056580] ? splice_from_pipe_next.part.0+0x2f0/0x2f0 [ 52.080767] EXT4-fs (loop5): Total free blocks count 0 [ 52.082982] direct_splice_actor+0x115/0x160 [ 52.082993] splice_direct_to_actor+0x27c/0x730 [ 52.083001] ? generic_pipe_buf_nosteal+0x10/0x10 [ 52.083008] ? do_splice_to+0x140/0x140 [ 52.083017] ? rw_verify_area+0xe1/0x2a0 [ 52.087679] EXT4-fs (loop5): Free/Dirty block details [ 52.095521] do_splice_direct+0x164/0x210 [ 52.095530] ? splice_direct_to_actor+0x730/0x730 [ 52.095541] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 52.095549] do_sendfile+0x47f/0xb30 [ 52.095557] ? do_compat_writev+0x180/0x180 [ 52.095565] ? SyS_futex+0x1da/0x290 [ 52.095572] SyS_sendfile64+0xff/0x110 [ 52.095578] ? SyS_sendfile+0x130/0x130 [ 52.095584] ? _raw_spin_unlock_irq+0x5a/0x80 [ 52.095594] ? do_syscall_64+0x4c/0x640 [ 52.119575] audit: type=1804 audit(1667652064.078:4): pid=7996 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor351" name="/root/file0/bus" dev="loop1" ino=18 res=1 [ 52.126203] ? SyS_sendfile+0x130/0x130 [ 52.126213] do_syscall_64+0x1d5/0x640 [ 52.126223] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 52.126230] Code: [ 52.131629] EXT4-fs error (device loop2) in ext4_free_blocks:5010: Corrupt filesystem [ 52.139427] 5f e9 0f 15 9c ff e8 0a 15 9c ff 45 8d 64 2c c4 b8 3c 00 00 00 29 e8 89 04 24 e9 e7 fe ff ff [ 52.144273] EXT4-fs (loop0): free_blocks=0 [ 52.148161] e8 f1 14 9c ff 0f 0b e8 ea 14 9c ff <0f> 0b e8 c3 d1 [ 52.159953] EXT4-fs (loop2): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 1060 with error 28 [ 52.160483] c5 ff e9 2a fe ff ff 4c 89 f7 e8 b6 d1 c5 [ 52.166026] EXT4-fs (loop2): This should not happen!! Data will be lost [ 52.166026] [ 52.169707] ff e9 [ 52.169724] RIP: ext4_write_inline_data+0x2e6/0x380 RSP: ffff8880b3bff460 [ 52.169774] ---[ end trace 70b46edd3f5dd3ee ]--- [ 52.188449] EXT4-fs (loop2): Total free blocks count 0 [ 52.188978] Kernel panic - not syncing: Fatal exception [ 52.189177] Kernel Offset: disabled [ 52.382686] Rebooting in 86400 seconds..