[Bug 275920] Kernel crash in sys/netlink/route/iface.c:124
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Date: Mon, 20 May 2024 07:39:30 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275920 --- Comment #9 from commit-hook@FreeBSD.org --- A commit in branch releng/14.1 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=fecd303882565954f58d984e4a13735e080b5263 commit fecd303882565954f58d984e4a13735e080b5263 Author: Kristof Provost <kp@FreeBSD.org> AuthorDate: 2024-05-06 09:39:08 +0000 Commit: Kristof Provost <kp@FreeBSD.org> CommitDate: 2024-05-20 07:38:40 +0000 if: guard against if_ioctl being NULL There are situations where an struct ifnet has a NULL if_ioctl pointer. For example, e6000sw creates such struct ifnets for each of its ports so it can call into the MII code. If there is then a link state event this calls do_link_state_change() -> rtnl_handle_ifevent() -> dump_iface() -> get_operstate() -> get_operstate_ether(). That wants to know if the link is up or down, so it tries to ioctl(SIOCGIFMEDIA), which doesn't go well if if_ioctl is NULL. Guard against this, and return EOPNOTSUPP. PR: 275920 MFC ater: 3 days Approved by: re (cperciva) Sponsored by: Rubicon Communications, LLC ("Netgate") (cherry picked from commit 43387b4e574043b78a58c8bcb7575161b055fce1) (cherry picked from commit 9a8a26aefb366ef6f497d48547a1562a1de566c1) sys/net/if.c | 3 +++ 1 file changed, 3 insertions(+) -- You are receiving this mail because: You are the assignee for the bug.