[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 30.414065] audit: type=1800 audit(1656674976.499:2): pid=7976 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor118" name="bus" dev="sda1" ino=13860 res=0 [ 30.433342] audit: type=1800 audit(1656674976.499:3): pid=7983 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor118" name="bus" dev="sda1" ino=13860 res=0 [ 30.453482] audit: type=1800 audit(1656674976.499:4): pid=7985 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor118" name="bus" dev="sda1" ino=13860 res=0 [ 30.472434] audit: type=1800 audit(1656674976.499:5): pid=7984 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor118" name="bus" dev="sda1" ino=13860 res=0 [ 30.491774] audit: type=1800 audit(1656674976.499:6): pid=7986 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor118" name="bus" dev="sda1" ino=13860 res=0 executing program executing program executing program executing program executing program executing program [ 30.650418] syz-executor118 (7983) used greatest stack depth: 25232 bytes left executing program executing program executing program executing program executing program executing program [ 30.743390] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 30.756420] File: /root/bus PID: 8016 Comm: syz-executor118 executing program executing program executing program executing program executing program executing program [ 30.878320] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 30.889621] File: /root/bus PID: 8038 Comm: syz-executor118 executing program executing program executing program executing program executing program executing program [ 30.991313] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 31.002505] File: /root/bus PID: 8065 Comm: syz-executor118 executing program executing program executing program executing program executing program executing program [ 31.326299] ------------[ cut here ]------------ [ 31.331069] WARNING: CPU: 1 PID: 8116 at fs/ext4/inode.c:3917 ext4_set_page_dirty+0xe8/0x130 [ 31.339623] Kernel panic - not syncing: panic_on_warn set ... [ 31.339623] [ 31.346966] CPU: 1 PID: 8116 Comm: syz-executor118 Not tainted 4.14.285-syzkaller #0 [ 31.354824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2022 [ 31.364161] Call Trace: [ 31.366734] dump_stack+0x1b2/0x281 [ 31.370340] panic+0x1f9/0x42d [ 31.373511] ? add_taint.cold+0x16/0x16 [ 31.377464] ? ext4_set_page_dirty+0xe8/0x130 [ 31.381939] ? ext4_set_page_dirty+0xe8/0x130 [ 31.386411] __warn.cold+0x20/0x44 [ 31.389931] ? ist_end_non_atomic+0x10/0x10 [ 31.394227] ? ext4_set_page_dirty+0xe8/0x130 [ 31.398697] report_bug+0x208/0x250 [ 31.402331] do_error_trap+0x195/0x2d0 [ 31.406197] ? math_error+0x2d0/0x2d0 [ 31.409986] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.414725] ? cmp_ex_sort+0xb0/0xb0 [ 31.418427] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.423254] invalid_op+0x1b/0x40 [ 31.426695] RIP: 0010:ext4_set_page_dirty+0xe8/0x130 [ 31.431795] RSP: 0018:ffff88809606fa58 EFLAGS: 00010297 [ 31.437140] RAX: ffff8880b050e380 RBX: ffffea00022d8b40 RCX: 0000000000000001 [ 31.444395] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffea00022d8b60 [ 31.451651] RBP: ffffea00022d8b40 R08: 0000000000000001 R09: ffffed10116c5bff [ 31.458901] R10: ffff88808b62dfff R11: 0000000000000000 R12: ffffea00024378e0 [ 31.466246] R13: ffffea00024378e0 R14: dffffc0000000000 R15: ffffea00022d8b40 [ 31.473509] ? ext4_set_page_dirty+0xe8/0x130 [ 31.477986] ? ext4_readpages+0x100/0x100 [ 31.482109] set_page_dirty+0x148/0x2a0 [ 31.486062] set_page_dirty_lock+0x61/0xa0 [ 31.490279] process_vm_rw_core.constprop.0+0x4a1/0xa40 [ 31.495624] ? pcpu_free_vm_areas+0xb0/0xb0 [ 31.499929] ? __might_fault+0x177/0x1b0 [ 31.503976] ? _copy_from_user+0x96/0x100 [ 31.508107] ? rw_copy_check_uvector+0x1dd/0x2b0 [ 31.512846] ? dup_iter+0x240/0x240 [ 31.516459] process_vm_rw+0x1c2/0x1f0 [ 31.520325] ? compat_process_vm_rw+0x1f0/0x1f0 [ 31.524975] ? vm_insert_page+0x7c0/0x7c0 [ 31.529103] ? __do_page_fault+0x571/0xad0 [ 31.533317] ? lock_downgrade+0x740/0x740 [ 31.537442] SyS_process_vm_writev+0x39/0x50 [ 31.541830] ? SyS_process_vm_readv+0x50/0x50 [ 31.546308] do_syscall_64+0x1d5/0x640 [ 31.550174] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.555341] RIP: 0033:0x7f0531294ba9 [ 31.559033] RSP: 002b:00007f05312042e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 [ 31.566715] RAX: ffffffffffffffda RBX: 00007f053131d440 RCX: 00007f0531294ba9 [ 31.573964] RDX: 0000000000000001 RSI: 0000000020c22000 RDI: 0000000000001fb4 [ 31.581223] RBP: 00007f053131d44c R08: 0000000000000001 R09: 0000000000000000 [ 31.588469] R10: 0000000020c22fa0 R11: 0000000000000246 R12: 00007f05312eb07c [ 31.595717] R13: 0000000000000000 R14: 65732f636f72702f R15: 00007f053131d448 [ 31.603233] Kernel Offset: disabled [ 31.606954] Rebooting in 86400 seconds..