Displaying 6 results from an estimated 6 matches for "ziqi".
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2023 Aug 19
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
Hi Ziqi,
On 8/19/23 11:10, Ziqi Zhao wrote:
> In the bug reported by Syzbot, certain bridge devices would have a
> leaked reference created by race conditions in dev_ioctl, specifically,
> under SIOCBRADDIF or SIOCBRDELIF operations. The reference leak would
How would it leak a reference, could y...
2023 Aug 19
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
...y doing so, the extra reference introduced in dev_ioctl is no longer
needed, and hence the reference leak bug is now resolved.
Reported-by: syzbot+881d65229ca4f9ae8c84 at syzkaller.appspotmail.com
Fixes: ad2f99aedf8f ("net: bridge: move bridge ioctls out of .ndo_do_ioctl")
Signed-off-by: Ziqi Zhao <astrajoan at yahoo.com>
---
net/bridge/br_ioctl.c | 4 ----
net/core/dev_ioctl.c | 8 +-------
net/socket.c | 2 ++
3 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
index f213ed108361..291dbc5d2a99 100644
--- a/net/...
2023 Aug 22
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
On 8/20/23 01:50, Ziqi Zhao wrote:
> On Sat, Aug 19, 2023 at 12:25:15PM +0300, Nikolay Aleksandrov wrote:
> Hi Nik,
>
> Thank you so much for reviewing the patch and getting back to me!
>
>> IIRC there was no bug, it was a false-positive. The reference is held a bit
>> longer but then release...
2023 Aug 19
1
[Bridge] [PATCH] net: bridge: Fix refcnt issues in dev_ioctl
...lthough the
scenario created by the reproducer would probably never happen in real
usages?
Please let me know whether you have any thoughts on how the above
issues were triggered, and what other information I could gather to
further demystify this bug. Thank you again for your help!
Best regards,
Ziqi
2023 Jul 21
2
[Bridge] [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock
...ug
reported by Syzbot; instead, it solves a deadlock situation to prepare
for one or more further patches to actually fix the Syzbot bug, which
appears to be a reference counting problem within the j1939 codebase.
Reported-by: syzbot+1591462f226d9cbf0564 at syzkaller.appspotmail.com
Signed-off-by: Ziqi Zhao <astrajoan at yahoo.com>
---
net/can/j1939/j1939-priv.h | 2 +-
net/can/j1939/main.c | 2 +-
net/can/j1939/socket.c | 25 +++++++++++++------------
3 files changed, 15 insertions(+), 14 deletions(-)
diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
index...
2023 Jun 10
2
[Bridge] [syzbot] [net?] unregister_netdevice: waiting for DEV to become free (8)
Hello,
syzbot found the following issue on:
HEAD commit: 67faabbde36b selftests/bpf: Add missing prototypes for sev..
git tree: bpf-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1381363b280000
kernel config: https://syzkaller.appspot.com/x/.config?x=5335204dcdecfda
dashboard link: https://syzkaller.appspot.com/bug?extid=881d65229ca4f9ae8c84
compiler: gcc (Debian