[Bug 202178] [pf] pf recursion panic when running ifconfig stf create
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Sat Aug 8 19:09:55 UTC 2015
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202178
Bug ID: 202178
Summary: [pf] pf recursion panic when running ifconfig stf
create
Product: Base System
Version: 10.1-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: freebsd-bugs at FreeBSD.org
Reporter: brian.salcedo at hardenedbsd.org
This was reported for 10.1-RELEASE by ketas @ IRC. I have also confirmed it in
HEAD.
groupname = all
if_addgroup(): groups insert
pfi_kif_update(): 0xfffff8000480cb00
pfi_kif_update(): 0xfffff8000480c400
pfi_kif_update(): 0xfffff8000480cb00
groupname = stf
if_addgroup(): ifg == NULL
if_addgroup(): groups insert
pfi_kif_update(): 0xfffff8000480c400
pfi_kif_update(): 0xfffff8000480cb00
pfi_kif_update(): 0xfffff8000480c400
pfi_kif_update(): 0xfffff8000480cb00
pfi_kif_update(): 0xfffff8000480c400
[ ... ]
Fatal double fault
rip = 0xffffffff809ed9fc
rsp = 0xfffffe0238914000
rbp = 0xfffffe0238914020
cpuid = 0; apic id = 00
panic: double fault
cpuid = 0
KDB: stack backtrace:
[ ... ]
pfi_kif_update() at pfi_kif_update+0x29/frame 0xfffffe0238914630
pfi_kif_update() at pfi_kif_update+0x23c/frame 0xfffffe0238914690
pfi_kif_update() at pfi_kif_update+0x23c/frame 0xfffffe02389146f0
pfi_kif_update() at pfi_kif_update+0x23c/frame 0xfffffe0238914750
pfi_kif_update() at pfi_kif_update+0x23c/frame 0xfffffe02389147b0
[ ... more recursion ... ]
pfi_change_group_event() at pfi_change_group_event+0x56/frame
0xfffffe02389178f0
if_addgroup() at if_addgroup+0x4ce/frame 0xfffffe0238917950
if_clone_createif() at if_clone_createif+0x1cf/frame 0xfffffe02389179a0
kern_ioctl() at kern_ioctl+0x230/frame 0xfffffe0238917a00
sys_ioctl() at sys_ioctl+0x16a/frame 0xfffffe0238917ae0
amd64_syscall() at amd64_syscall+0x282/frame 0xfffffe0238917bf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0238917bf0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x3c54795a85a, rsp =
0x74f3a9666078, rbp = 0x74f3a96660c0 ---
KDB: enter: panic
[ thread pid 70905 tid 100584 ]
Stopped at kdb_enter+0x3e: movq $0,kdb_why
How-To-Repeat: # ifconfig stf create
This seems related to #127042.
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