[Bug 200210] adding vtnet to bridge results to kernel panic

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Thu May 14 20:47:03 UTC 2015


            Bug ID: 200210
           Summary: adding vtnet to bridge results to kernel panic
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: grehan at FreeBSD.org

Reported by Nikos Vassiliadis on the freebsd-virtualization list,

Unread portion of the kernel message buffer:
panic: if_setflag: decrement non-positive refcount 0 for flag 256
cpuid = 1
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01a5be54c0
vpanic() at vpanic+0x189/frame 0xfffffe01a5be5540
kassert_panic() at kassert_panic+0x132/frame 0xfffffe01a5be55b0
if_setflag() at if_setflag+0x147/frame 0xfffffe01a5be5610
ifpromisc() at ifpromisc+0x2c/frame 0xfffffe01a5be5640
bridge_delete_member() at bridge_delete_member+0x3a8/frame 0xfffffe01a5be56c0
bridge_ioctl_add() at bridge_ioctl_add+0x574/frame 0xfffffe01a5be5710
bridge_ioctl() at bridge_ioctl+0x1ad/frame 0xfffffe01a5be57b0
ifioctl() at ifioctl+0x9df/frame 0xfffffe01a5be5860
kern_ioctl() at kern_ioctl+0x230/frame 0xfffffe01a5be58c0
sys_ioctl() at sys_ioctl+0x153/frame 0xfffffe01a5be59a0
amd64_syscall() at amd64_syscall+0x27f/frame 0xfffffe01a5be5ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe01a5be5ab0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8011e09aa, rsp =
0x7fffffffe1f8, rbp = 0x7fffffffe2a0 ---
KDB: enter: panic

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