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Date:      Sun, 23 Feb 2020 20:13:27 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 244349] [5] [Kernel panic: wrong length 34560 for sectorsize 512] observed while plugging the UFS USB drive on FreeBSD 13-CURRENT
Message-ID:  <bug-244349-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244349

            Bug ID: 244349
           Summary: [5] [Kernel panic: wrong length 34560 for sectorsize
                    512] observed while plugging the UFS USB drive on
                    FreeBSD 13-CURRENT
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: neerajpal09@gmail.com

Created attachment 211871
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D211871&action=
=3Dedit
Contains PoC UFS image and detailed logs includes 13-current

Hi there,

Kernel Panic is observed while attaching the usb drive which contains malic=
ious
UFS filesystem image. No user authentication and interaction is needed.

Just flash the attached UFS image to usb drive and plug the usb drive to
FreeBSD 13-CURRENT.

This doesn't observe on=20
+ FreeBSD 12.1-RELEASE r354233
+ FreeBSD 12.1-STABLE r358121.

[Kernel Log - FreeBSD 13-CURRENT]

freebsd dumped core - see /var/crash/vmcore.6

Wed Feb 19 15:59:08 UTC 2020

FreeBSD freebsd 13.0-CURRENT FreeBSD 13.0-CURRENT #0: Wed Feb 19
01:58:08 UTC 2020
root@freebsd:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64

panic: wrong length 34560 for sectorsize 512

GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain condition=
s.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...

Unread portion of the kernel message buffer:
Superblock check-hash failed: recorded check-hash 0xc0428f31 !=3D
computed check-hash 0x5efc8da1 (Ignored)
panic: wrong length 34560 for sectorsize 512
cpuid =3D 0
time =3D 1582127757
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe002c779=
840
vpanic() at vpanic+0x185/frame 0xfffffe002c7798a0
panic() at panic+0x43/frame 0xfffffe002c779900
g_io_request() at g_io_request+0x331/frame 0xfffffe002c779930
g_read_data() at g_read_data+0x94/frame 0xfffffe002c779970
g_use_g_read_data() at g_use_g_read_data+0x35/frame 0xfffffe002c779990
ffs_sbget() at ffs_sbget+0x24f/frame 0xfffffe002c779a00
g_label_ufs_taste_common() at g_label_ufs_taste_common+0x79/frame
0xfffffe002c779a40
g_label_taste() at g_label_taste+0x2ac/frame 0xfffffe002c779b50
g_new_provider_event() at g_new_provider_event+0xaa/frame 0xfffffe002c779b70
g_run_events() at g_run_events+0x176/frame 0xfffffe002c779bb0
fork_exit() at fork_exit+0x80/frame 0xfffffe002c779bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe002c779bf0
--- trap 0, rip =3D 0, rsp =3D 0, rbp =3D 0 ---
KDB: enter: panic
Uptime: 17m41s
Dumping 260 out of 4062 MB:..7%..13%..25%..31%..44%..56%..62%..74%..87%..93%

[Attachments]
+ UFS filesystem image
+ detailed logs from FreeBSD 13-CURRENT

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