[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.65' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.527754] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found
[   40.534706] UDF-fs: Scanning with blocksize 512 failed
[   40.543284] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found
[   40.550194] UDF-fs: Scanning with blocksize 1024 failed
[   40.555887] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found
[   40.562801] UDF-fs: Scanning with blocksize 2048 failed
[   40.569315] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256
[   40.579201] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
[   40.596182] ==================================================================
[   40.603655] BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x780/0x860
[   40.610508] Write of size 4 at addr ffff888094c5a870 by task syz-executor181/8103
[   40.618122] 
[   40.619748] CPU: 0 PID: 8103 Comm: syz-executor181 Not tainted 4.19.211-syzkaller #0
[   40.627610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   40.636947] Call Trace:
[   40.639529]  dump_stack+0x1fc/0x2ef
[   40.643143]  print_address_description.cold+0x54/0x219
[   40.648415]  kasan_report_error.cold+0x8a/0x1b9
[   40.653085]  ? udf_write_aext+0x780/0x860
[   40.657225]  __asan_report_store_n_noabort+0x8b/0xa0
[   40.662316]  ? udf_write_aext+0x780/0x860
[   40.666449]  udf_write_aext+0x780/0x860
[   40.670451]  udf_add_entry+0xdab/0x2a20
[   40.674417]  ? udf_write_fi+0xf40/0xf40
[   40.678375]  ? udf_new_inode+0xa7b/0xf30
[   40.682432]  udf_mkdir+0x145/0x650
[   40.685956]  ? map_id_up+0x178/0x2f0
[   40.689652]  ? udf_create+0x180/0x180
[   40.693435]  ? putname+0xe1/0x120
[   40.696871]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   40.701876]  ? generic_permission+0x116/0x4d0
[   40.706441]  ? security_inode_permission+0xc5/0xf0
[   40.711361]  ? inode_permission.part.0+0x10c/0x450
[   40.716277]  vfs_mkdir+0x508/0x7a0
[   40.719894]  do_mkdirat+0x262/0x2d0
[   40.723546]  ? __ia32_sys_mknod+0x120/0x120
[   40.727852]  ? trace_hardirqs_off_caller+0x6e/0x210
[   40.732850]  ? do_syscall_64+0x21/0x620
[   40.736807]  do_syscall_64+0xf9/0x620
[   40.740594]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   40.745767] RIP: 0033:0x7f850c19d909
[   40.749475] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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
[   40.768476] RSP: 002b:00007ffd6257cdd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[   40.776260] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f850c19d909
[   40.783513] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000004
[   40.790807] RBP: 00007f850c15d1a0 R08: 0000000000000000 R09: 0000000000000000
[   40.798175] R10: 000000000000002e R11: 0000000000000246 R12: 00007f850c15d230
[   40.805517] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   40.812777] 
[   40.814387] Allocated by task 8103:
[   40.817999]  __kmalloc+0x15a/0x3c0
[   40.821525]  udf_new_inode+0x220/0xf30
[   40.825393]  udf_mkdir+0xa8/0x650
[   40.828829]  vfs_mkdir+0x508/0x7a0
[   40.832351]  do_mkdirat+0x262/0x2d0
[   40.835960]  do_syscall_64+0xf9/0x620
[   40.839749]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   40.844918] 
[   40.846527] Freed by task 0:
[   40.849522] (stack is not available)
[   40.853212] 
[   40.854823] The buggy address belongs to the object at ffff888094c5a880
[   40.854823]  which belongs to the cache kmalloc-4096 of size 4096
[   40.867637] The buggy address is located 16 bytes to the left of
[   40.867637]  4096-byte region [ffff888094c5a880, ffff888094c5b880)
[   40.879942] The buggy address belongs to the page:
[   40.884855] page:ffffea0002531680 count:1 mapcount:0 mapping:ffff88813bff0dc0 index:0x0 compound_mapcount: 0
[   40.894891] flags: 0xfff00000008100(slab|head)
[   40.899544] raw: 00fff00000008100 ffffea0002cddc88 ffffea0002c09e88 ffff88813bff0dc0
[   40.907408] raw: 0000000000000000 ffff888094c5a880 0000000100000001 0000000000000000
[   40.915267] page dumped because: kasan: bad access detected
[   40.921042] 
[   40.922649] Memory state around the buggy address:
[   40.927559]  ffff888094c5a700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   40.934900]  ffff888094c5a780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   40.942238] >ffff888094c5a800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   40.949575]                                                              ^
[   40.956568]  ffff888094c5a880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   40.963915]  ffff888094c5a900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   40.971257] ==================================================================
[   40.978596] Disabling lock debugging due to kernel taint
[   40.988412] Kernel panic - not syncing: panic_on_warn set ...
[   40.988412] 
[   40.995886] CPU: 1 PID: 8103 Comm: syz-executor181 Tainted: G    B             4.19.211-syzkaller #0
[   41.005159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   41.014597] Call Trace:
[   41.017174]  dump_stack+0x1fc/0x2ef
[   41.020797]  panic+0x26a/0x50e
[   41.023977]  ? __warn_printk+0xf3/0xf3
[   41.027849]  ? preempt_schedule_common+0x45/0xc0
[   41.032589]  ? ___preempt_schedule+0x16/0x18
[   41.036980]  ? trace_hardirqs_on+0x55/0x210
[   41.041393]  kasan_end_report+0x43/0x49
[   41.045351]  kasan_report_error.cold+0xa7/0x1b9
[   41.050003]  ? udf_write_aext+0x780/0x860
[   41.054135]  __asan_report_store_n_noabort+0x8b/0xa0
[   41.059222]  ? udf_write_aext+0x780/0x860
[   41.063349]  udf_write_aext+0x780/0x860
[   41.067304]  udf_add_entry+0xdab/0x2a20
[   41.071260]  ? udf_write_fi+0xf40/0xf40
[   41.075218]  ? udf_new_inode+0xa7b/0xf30
[   41.079263]  udf_mkdir+0x145/0x650
[   41.082785]  ? map_id_up+0x178/0x2f0
[   41.086485]  ? udf_create+0x180/0x180
[   41.090266]  ? putname+0xe1/0x120
[   41.093699]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   41.098699]  ? generic_permission+0x116/0x4d0
[   41.103178]  ? security_inode_permission+0xc5/0xf0
[   41.108090]  ? inode_permission.part.0+0x10c/0x450
[   41.112999]  vfs_mkdir+0x508/0x7a0
[   41.116522]  do_mkdirat+0x262/0x2d0
[   41.120129]  ? __ia32_sys_mknod+0x120/0x120
[   41.124452]  ? trace_hardirqs_off_caller+0x6e/0x210
[   41.129449]  ? do_syscall_64+0x21/0x620
[   41.133413]  do_syscall_64+0xf9/0x620
[   41.137199]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   41.142368] RIP: 0033:0x7f850c19d909
[   41.146064] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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
[   41.164945] RSP: 002b:00007ffd6257cdd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
[   41.172634] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f850c19d909
[   41.179975] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000004
[   41.187228] RBP: 00007f850c15d1a0 R08: 0000000000000000 R09: 0000000000000000
[   41.194569] R10: 000000000000002e R11: 0000000000000246 R12: 00007f850c15d230
[   41.201822] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.209285] Kernel Offset: disabled
[   41.212910] Rebooting in 86400 seconds..