Our "yBSD" builder needs to mount a disk image temporarily that has a dos partition (for openstack-ish things) to put configs into it. It seems that under high stress, we can squeeze a panic out of it in namei(). Sean Unread portion of the kernel message buffer: panic: namei: nameiop contaminated with flags cpuid = 8 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe048d8e53b0 kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe048d8e5460 vpanic() at vpanic+0x126/frame 0xfffffe048d8e54a0 kassert_panic() at kassert_panic+0x136/frame 0xfffffe048d8e5510 namei() at namei+0x2c8/frame 0xfffffe048d8e5600 msdosfs_mount() at msdosfs_mount+0x556/frame 0xfffffe048d8e57c0 vfs_donmount() at vfs_donmount+0xc35/frame 0xfffffe048d8e5aa0 sys_nmount() at sys_nmount+0x72/frame 0xfffffe048d8e5ae0 amd64_syscall() at amd64_syscall+0x223/frame 0xfffffe048d8e5bf0 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe048d8e5bf0 --- syscall (378, FreeBSD ELF64, sys_nmount), rip = 0x8000a8b68a, rsp = 0x7fffffffd508, rbp = 0x7fffffffdb30 --- Uptime: 34m55s Dumping 1140 out of 16350 MB:..2%..12%..22%..31%..41%..51%..61%..71%..82%..92% Reading symbols from /boot/modules/msdosfs.ko...done. Loaded symbols for /boot/modules/msdosfs.ko #0 doadump (textdump=1) at pcpu.h:227 227 pcpu.h: No such file or directory. in pcpu.h (kgdb) Hangup detected on fd 0 error detected on stdin
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