Date: Fri, 26 Jan 2018 00:25:05 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 225438] panic in6_unlink_ifa() due to race Message-ID: <bug-225438-2472-aaEd0EwDDm@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-225438-2472@https.bugs.freebsd.org/bugzilla/> References: <bug-225438-2472@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225438 --- Comment #2 from Dave Baukus <daveb@spectralogic.com> --- Admittedly, the test case listed is specious, but the following a bit less so: while : do setfib 1 arp -d $ADDR & setfib 1 ping -c 4 $ADDR & setfib 1 arp -d $ADDR & /etc/rc.d/netif restart igb1 & setfib 1 ping -c 4 $ADDR & setfib 1 arp -d $ADDR & wait sleep 5 done panic: in6_ifattach_linklocal: ia == NULL, ifp=0xfffff8012150f800 (struct thread *)0xfffff8171e964560, tid 102323 ifconfig :: (struct proc *)0xfffff8171e298588, pid 48226 args: /sbin/ifconfig igb1 up #9 0xffffffff804ffacb in kdb_enter (why=0xffffffff80862eef "panic", msg=<value optimized out>) at cpufunc.h:63 #10 0xffffffff804bf0c3 in vpanic (fmt=<value optimized out>, ap=0xfffffe1b8ef285c0) at sys/kern/kern_shutdown.c:752 #11 0xffffffff804bef16 in kassert_panic (fmt=<value optimized out>) at sys/kern/kern_shutdown.c:649 #12 0xffffffff80682613 in in6_ifattach (ifp=0xfffff8012150f800, altifp=<value optimized out>) at sys/netinet6/in6_ifattach.c:506 #13 0xffffffff805ade5a in if_up (ifp=0xfffff8012150f800) at sys/net/if.c:2155 #14 0xffffffff805af399 in ifioctl (so=<value optimized out>, cmd=<value optimized out>, data=0xfffffe1b8ef28880 "igb1", td=<value optimized out>) at sys/net/if.c:2459 #15 0xffffffff80524ad4 in kern_ioctl (td=<value optimized out>, fd=<value optimized out>, com=<value optimized out>, data=<value optimized out>) at file.h:323 #16 0xffffffff8052478e in sys_ioctl (td=0xfffff8171e964560, uap=0xfffffe1b8ef28a30) at sys/kern/sys_generic.c:745 -- You are receiving this mail because: You are the assignee for the bug.
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