From: syzbot <syzbot+e74a998ca8f1df9cc332@syzkaller.appspotmail.com>
To: andreyknvl@google.com, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
rafael@kernel.org, syzkaller-bugs@googlegroups.com
Subject: WARNING in pvr2_i2c_core_done
Date: Wed, 25 Sep 2019 05:59:05 -0700 [thread overview]
Message-ID: <000000000000c2ee6a059360376e@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: d9e63adc usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=16b5fcd5600000
kernel config: https://syzkaller.appspot.com/x/.config?x=f4fa60e981ee8e6a
dashboard link: https://syzkaller.appspot.com/bug?extid=e74a998ca8f1df9cc332
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16ec07b1600000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13ff0871600000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+e74a998ca8f1df9cc332@syzkaller.appspotmail.com
pvrusb2: Device being rendered inoperable
cx25840 0-0044: Unable to detect h/w, assuming cx23887
cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a)
pvrusb2: Attached sub-driver cx25840
pvrusb2: ***WARNING*** pvrusb2 device hardware appears to be jammed and I
can't clear it.
pvrusb2: You might need to power cycle the pvrusb2 device in order to
recover.
------------[ cut here ]------------
sysfs group 'power' not found for kobject 'i2c-0'
WARNING: CPU: 0 PID: 102 at fs/sysfs/group.c:278 sysfs_remove_group
fs/sysfs/group.c:278 [inline]
WARNING: CPU: 0 PID: 102 at fs/sysfs/group.c:278
sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:269
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 102 Comm: pvrusb2-context Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xca/0x13e lib/dump_stack.c:113
panic+0x2a3/0x6da kernel/panic.c:219
__warn.cold+0x20/0x4a kernel/panic.c:576
report_bug+0x262/0x2a0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:179 [inline]
fixup_bug arch/x86/kernel/traps.c:174 [inline]
do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:sysfs_remove_group fs/sysfs/group.c:278 [inline]
RIP: 0010:sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:269
Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c
01 00 75 41 48 8b 33 48 c7 c7 a0 dc d0 85 e8 e0 67 8a ff <0f> 0b eb 95 e8
72 c4 db ff e9 d2 fe ff ff 48 89 df e8 65 c4 db ff
RSP: 0018:ffff8881d5857c40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff85f33f80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8128d3fd RDI: ffffed103ab0af7a
RBP: 0000000000000000 R08: ffff8881d5e11800 R09: ffffed103b643ee7
R10: ffffed103b643ee6 R11: ffff8881db21f737 R12: ffff8881d2e68338
R13: ffffffff85f34520 R14: ffff8881d2e68900 R15: ffff8881d5e11800
dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:741
device_del+0x12a/0xb10 drivers/base/core.c:2352
device_unregister+0x11/0x30 drivers/base/core.c:2407
i2c_del_adapter drivers/i2c/i2c-core-base.c:1596 [inline]
i2c_del_adapter+0x42b/0x590 drivers/i2c/i2c-core-base.c:1535
pvr2_i2c_core_done+0x69/0xb6
drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:652
pvr2_hdw_destroy+0x179/0x370 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2680
pvr2_context_destroy+0x84/0x230
drivers/media/usb/pvrusb2/pvrusb2-context.c:70
pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline]
pvr2_context_thread_func+0x657/0x860
drivers/media/usb/pvrusb2/pvrusb2-context.c:158
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
next reply other threads:[~2019-09-25 12:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 12:59 syzbot [this message]
2019-09-25 14:10 ` WARNING in pvr2_i2c_core_done Alan Stern
2019-09-25 15:34 ` Andrey Konovalov
2019-09-26 21:44 ` Alan Stern
2019-09-27 5:10 ` Greg Kroah-Hartman
2019-09-27 14:21 ` Alan Stern
-- strict thread matches above, loose matches on Subject: below --
2020-07-21 11:10 [PATCH] i2c: fix " B K Karthik
2020-07-21 11:20 ` syzbot
2020-07-21 11:55 ` B K Karthik
2020-07-22 3:16 [PATCH v2] i2c: fix " B K Karthik
2020-07-22 4:06 ` syzbot
[not found] ` <20200722091201.2076-1-hdanton@sina.com>
2020-07-22 9:18 ` B K Karthik
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000c2ee6a059360376e@google.com \
--to=syzbot+e74a998ca8f1df9cc332@syzkaller.appspotmail.com \
--cc=andreyknvl@google.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=rafael@kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.