[ 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 '10.128.0.93' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 503.967245] kasan: CONFIG_KASAN_INLINE enabled [ 503.971922] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 503.980456] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 503.986699] Modules linked in: [ 503.989894] CPU: 0 PID: 7981 Comm: syz-executor296 Not tainted 4.14.295-syzkaller #0 [ 503.997756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 504.007095] task: ffff8880a51e4180 task.stack: ffff8880b2c78000 [ 504.013142] RIP: 0010:dtInsertEntry.isra.0+0x10a2/0x1440 [ 504.018566] RSP: 0018:ffff8880b2c7f558 EFLAGS: 00010202 [ 504.023906] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900015b9180 [ 504.031223] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 0000000000000008 [ 504.038478] RBP: ffff888094dba446 R08: ffff8880b2c7f738 R09: ffff8880b2c7f718 [ 504.045733] R10: 0000000000000000 R11: ffff8880a51e4180 R12: ffff8880b0a0a59a [ 504.052979] R13: dffffc0000000000 R14: 0000000000000073 R15: ffff888094dba428 [ 504.060228] FS: 00005555561a8300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 504.068430] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 504.074296] CR2: 00007f5b29900a00 CR3: 00000000b3142000 CR4: 00000000003406f0 [ 504.081549] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 504.088795] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 504.096042] Call Trace: [ 504.098616] ? _raw_spin_unlock+0x29/0x40 [ 504.102745] ? modify_index+0x370/0x370 [ 504.106698] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 504.111751] ? __mark_inode_dirty+0x17d/0xf40 [ 504.116223] dtInsert+0x47a/0x9e0 [ 504.119654] ? dtSearch+0x1ba0/0x1ba0 [ 504.123432] ? txEnd+0x2d0/0x2d0 [ 504.126777] jfs_create.part.0+0x364/0x800 [ 504.130988] ? jfs_mkdir+0x50/0x50 [ 504.134504] ? jfs_lookup+0x99/0x170 [ 504.138193] ? __dquot_initialize+0x228/0xa70 [ 504.142663] ? dquot_initialize_needed+0x240/0x240 [ 504.147567] ? param_get_aalockpolicy+0x70/0x70 [ 504.152213] ? map_id_up+0xe9/0x180 [ 504.155816] ? security_inode_permission+0xb5/0xf0 [ 504.160718] jfs_create+0x35/0x50 [ 504.164163] ? jfs_create.part.0+0x800/0x800 [ 504.168554] lookup_open+0x77a/0x1750 [ 504.172341] ? vfs_mkdir+0x6e0/0x6e0 [ 504.176033] path_openat+0xe08/0x2970 [ 504.179912] ? path_lookupat+0x780/0x780 [ 504.183949] ? trace_hardirqs_on+0x10/0x10 [ 504.188158] do_filp_open+0x179/0x3c0 [ 504.191933] ? may_open_dev+0xe0/0xe0 [ 504.195708] ? lock_downgrade+0x740/0x740 [ 504.199830] ? do_raw_spin_unlock+0x164/0x220 [ 504.204299] ? _raw_spin_unlock+0x29/0x40 [ 504.208424] ? __alloc_fd+0x1be/0x490 [ 504.212203] do_sys_open+0x296/0x410 [ 504.215899] ? filp_open+0x60/0x60 [ 504.219414] ? __close_fd+0x159/0x230 [ 504.223188] ? do_syscall_64+0x4c/0x640 [ 504.227134] ? SyS_open+0x30/0x30 [ 504.230570] do_syscall_64+0x1d5/0x640 [ 504.234520] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 504.239682] RIP: 0033:0x7f5b29927029 [ 504.243371] RSP: 002b:00007fff1cee6208 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 504.251056] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f5b29927029 [ 504.258301] RDX: 000000000000275a RSI: 0000000020000040 RDI: 00000000ffffff9c [ 504.265545] RBP: 00007f5b298e6890 R08: 0000000000000000 R09: 0000000000000000 [ 504.272790] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000f8008000 [ 504.280034] R13: 0000000000000000 R14: 00080000000000f8 R15: 0000000000000000 [ 504.287309] Code: c6 40 04 ff e9 9f f9 ff ff e8 4b 50 19 ff 48 8b 84 24 b0 00 00 00 48 8d 78 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 df 01 00 [ 504.306372] RIP: dtInsertEntry.isra.0+0x10a2/0x1440 RSP: ffff8880b2c7f558 [ 504.317337] ---[ end trace 4929664e99c93945 ]--- [ 504.322099] Kernel panic - not syncing: Fatal exception [ 504.327623] Kernel Offset: disabled [ 504.331265] Rebooting in 86400 seconds..