Date: Fri, 24 Aug 2018 05:43:07 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 230857] loading carp module panic i386 kernel (VIMAGE related) Message-ID: <bug-230857-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230857 Bug ID: 230857 Summary: loading carp module panic i386 kernel (VIMAGE related) Product: Base System Version: CURRENT Hardware: i386 OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: olivier@freebsd.org It's very easy to panic an i386 current by just loading carp module. I believe there are still lot's of i386 setups (network appliance like Soekris or VMs) that will be impacted if this bug is still present when 12.0 will be released. Set to reproduce is very easy: 1. Download 12-ALPHA2 i386 image and start it 2. Login as root 3. Enter 'kldldoad carp' and system will panic Thread on the mailing list: https://lists.freebsd.org/pipermail/freebsd-current/2018-August/070780.html Panic message: root@freebsd:~ # kldload carp Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x24ef548c fault code = supervisor write, page not present instruction pointer = 0x20:0x1541635c stack pointer = 0x28:0x14de57f4 frame pointer = 0x28:0x14de57fc code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 703 (kldload) [ thread pid 703 tid 100073 ] Stopped at vnet_carpstats_init+0x2c: movl %eax,__stop_set_vnet(%ecx,%esi,1) db> bt Tracing pid 703 tid 100073 td 0x15152700 vnet_carpstats_init(0,0,1820be1,1e2,17c0321,...) at vnet_carpstats_init+0x2c/frame 0x14de57fc vnet_register_sysinit(154182cc,0,1732cd3,e6,0,...) at vnet_register_sysinit+0xf6/frame 0x14de5828 linker_load_module(0,0,14de5a6c,42e,115a201,...) at linker_load_module+0xc64/frame 0x14de5a4c kern_kldload(15152700,11a0b800,14de5a98,0,0,...) at kern_kldload+0xf5/frame 0x14de5a80 sys_kldload(15152700,15152984,180ca39,4,14de5ad4,...) at sys_kldload+0x6e/frame 0x14de5aa8 syscall(14de5ba8,3b,3b,3b,ffbfee90,...) at syscall+0x33f/frame 0x14de5b9c Xint0x80_syscall() at PTDpde+0x43af/frame 0x14de5b9c --- syscall (304, FreeBSD ELF32, sys_kldload), eip = 0x200a076f, esp = 0xffbfe7c4, ebp = 0xffbfed18 --- carp_list() at 0x200a076f -- You are receiving this mail because: You are the assignee for the bug.
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