[syzbot] [rdma?] WARNING: ODEBUG bug in siw_netdev_event

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: b1d3a0e70c38 Add linux-next specific files for 20240208
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1325c020180000
kernel config: https://syzkaller.appspot.com/x/.config?x=bb693ba195662a06
dashboard link: https://syzkaller.appspot.com/bug?extid=e7c51d3be3a5ddfa0d7a
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/176a6b395bbe/disk-b1d3a0e7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/02d7d46f81bd/vmlinux-b1d3a0e7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/18a5a5030e19/bzImage-b1d3a0e7.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e7c51d...@syzkaller.appspotmail.com

netlink: 'syz-executor.1': attribute type 27 has an invalid length.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
: port 3(erspan0) entered disabled state
------------[ cut here ]------------
ODEBUG: init active (active state 0) object: ffff88802de95128 object type: work_struct hint: siw_netdev_down+0x0/0x1f0
WARNING: CPU: 1 PID: 16397 at lib/debugobjects.c:517 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514
Modules linked in:
CPU: 1 PID: 16397 Comm: syz-executor.1 Not tainted 6.8.0-rc3-next-20240208-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514
Code: e8 1b e3 4d fd 4c 8b 0b 48 c7 c7 00 89 fe 8b 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 2b 97 ae fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 bc 2f dd 0a 48 83 c4 10 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90014536758 EFLAGS: 00010282
RAX: 5f296badc3198f00 RBX: ffffffff8ba9e6a0 RCX: 0000000000040000
RDX: ffffc90004f8b000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffffff8bfe8a80 R08: ffffffff8157b862 R09: fffffbfff1bf95c4
R10: dffffc0000000000 R11: fffffbfff1bf95c4 R12: 0000000000000000
R13: ffffffff8bfe8998 R14: dffffc0000000000 R15: ffff88802de95128
FS: 00007fc00b12a6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1fd40f000 CR3: 000000003e1a6000 CR4: 00000000003506f0
DR0: 000000000000d8dd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__debug_object_init+0x2a9/0x400 lib/debugobjects.c:653
siw_device_goes_down drivers/infiniband/sw/siw/siw_main.c:395 [inline]
siw_netdev_event+0x3bd/0x620 drivers/infiniband/sw/siw/siw_main.c:422
notifier_call_chain+0x18f/0x3b0 kernel/notifier.c:93
call_netdevice_notifiers_extack net/core/dev.c:2012 [inline]
call_netdevice_notifiers net/core/dev.c:2026 [inline]
__dev_close_many+0x146/0x300 net/core/dev.c:1512
__dev_close net/core/dev.c:1550 [inline]
__dev_change_flags+0x30e/0x6f0 net/core/dev.c:8683
dev_change_flags+0x8b/0x1a0 net/core/dev.c:8757
do_setlink+0xcb0/0x41c0 net/core/rtnetlink.c:2894
rtnl_group_changelink net/core/rtnetlink.c:3443 [inline]
__rtnl_newlink net/core/rtnetlink.c:3702 [inline]
rtnl_newlink+0x1117/0x20a0 net/core/rtnetlink.c:3739
rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6606
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3c/0xd70 net/netlink/af_netlink.c:1908
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc00a47dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc00b12a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc00a5ac1f0 RCX: 00007fc00a47dda9
RDX: 0000000000000000 RSI: 0000000020006440 RDI: 0000000000000005
RBP: 00007fc00a4ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc00a5ac1f0 R15: 00007fff19fc38d8
</TASK>


---
This report 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 syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

[Leon Romanovsky]

On Mon, Feb 12, 2024 at 02:26:24AM -0800, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: b1d3a0e70c38 Add linux-next specific files for 20240208
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=1325c020180000
> kernel config: https://syzkaller.appspot.com/x/.config?x=bb693ba195662a06
> dashboard link: https://syzkaller.appspot.com/bug?extid=e7c51d3be3a5ddfa0d7a
> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/176a6b395bbe/disk-b1d3a0e7.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/02d7d46f81bd/vmlinux-b1d3a0e7.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/18a5a5030e19/bzImage-b1d3a0e7.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+e7c51d...@syzkaller.appspotmail.com
>
> netlink: 'syz-executor.1': attribute type 27 has an invalid length.
> netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'.
> : port 3(erspan0) entered disabled state
> ------------[ cut here ]------------
> ODEBUG: init active (active state 0) object: ffff88802de95128 object type: work_struct hint: siw_netdev_down+0x0/0x1f0

It means that you are trying to reinitalize work_struct. I'm not sure
that SIW should listen to NETDEV_GOING_DOWN event.

Thanks

[Bernard Metzler]

> -----Original Message-----
> From: Leon Romanovsky <le...@kernel.org>
> Sent: Tuesday, February 13, 2024 2:22 PM
> To: Bernard Metzler <B...@zurich.ibm.com>
> Cc: syzbot <syzbot+e7c51d...@syzkaller.appspotmail.com>;
> j...@ziepe.ca; linux-...@vger.kernel.org; linux...@vger.kernel.org;
> net...@vger.kernel.org; syzkall...@googlegroups.com
> Subject: [EXTERNAL] Re: [syzbot] [rdma?] WARNING: ODEBUG bug in
> siw_netdev_event
>
> On Mon, Feb 12, 2024 at 02:26:24AM -0800, syzbot wrote:
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: b1d3a0e70c38 Add linux-next specific files for 20240208
> > git tree: linux-next

> > console output: INVALID URI REMOVED
> 3A__syzkaller.appspot.com_x_log.txt-3Fx-
> 3D1325c020180000&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-j&s=hgwELv-
> goeZcdq455t1I04emPAj72NmfR0ov2vUSKZI&e=
> > kernel config: INVALID URI REMOVED
> 3A__syzkaller.appspot.com_x_.config-3Fx-
> 3Dbb693ba195662a06&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-
> j&s=Q482ArHYYdvaWRLfjy6uNWnbEURwJxYnp5gfVC_riVA&e=
> > dashboard link: INVALID URI REMOVED
> 3A__syzkaller.appspot.com_bug-3Fextid-
> 3De7c51d3be3a5ddfa0d7a&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-j&s=d34IHrTtfyuyMsoBbn4-_n-
> 94tdvtpkwjBOFNDY3flE&e=

> > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for
> Debian) 2.40
> >
> > Unfortunately, I don't have any reproducer for this issue yet.
> >
> > Downloadable assets:

> > disk image: INVALID URI REMOVED
> 3A__storage.googleapis.com_syzbot-2Dassets_176a6b395bbe_disk-
> 2Db1d3a0e7.raw.xz&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-
> j&s=qCbExgqdot3pvbGd1uAIEihhU7lrb7pK0ZJot5edl0s&e=
> > vmlinux: INVALID URI REMOVED
> 3A__storage.googleapis.com_syzbot-2Dassets_02d7d46f81bd_vmlinux-
> 2Db1d3a0e7.xz&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-j&s=vVIZttea1-
> 8ENzBivZAADsNo43kiourBw2FAqL88GW0&e=
> > kernel image: INVALID URI REMOVED
> 3A__storage.googleapis.com_syzbot-2Dassets_18a5a5030e19_bzImage-
> 2Db1d3a0e7.xz&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-
> j&s=NOT258m7hucq5plqUHBseBFiWWSdbEsGQyh7KLdc0BE&e=

> >
> > IMPORTANT: if you fix the issue, please add the following tag to the
> commit:
> > Reported-by: syzbot+e7c51d...@syzkaller.appspotmail.com
> >
> > netlink: 'syz-executor.1': attribute type 27 has an invalid length.
> > netlink: 4 bytes leftover after parsing attributes in process `syz-
> executor.1'.
> > : port 3(erspan0) entered disabled state
> > ------------[ cut here ]------------
> > ODEBUG: init active (active state 0) object: ffff88802de95128 object
> type: work_struct hint: siw_netdev_down+0x0/0x1f0
>
> It means that you are trying to reinitalize work_struct. I'm not sure
> that SIW should listen to NETDEV_GOING_DOWN event.
>

Thanks Leon, will look into it.

Bernard

> > See INVALID URI REMOVED
> 3A__goo.gl_tpsmEJ&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-
> j&s=VKVZddkUXUUPb8P0d0TYU7gK07WVmdv89Uy0UNlHdcw&e= for more information

> about syzbot.
> > syzbot engineers can be reached at syzk...@googlegroups.com.
> >
> > syzbot will keep track of this issue. See:

> > INVALID URI REMOVED
> 23status&d=DwIFAg&c=jf_iaSHvJObTbx-siA1ZOg&r=2TaYXQ0T-
> r8ZO1PP1alNwU_QJcRRLfmYTAgd3QCvqSc&m=-buWaJng5x9YDIkGUftP-PSUlBitcOCYQuai-
> l9fgVjbeQ_KZhlJWd5PVtLd-Q-
> j&s=i6zpjc5oRro076Wqv6aJ0999vK6CpaHFhTh8m9Clx4c&e= for how to communicate

[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.