[Bug 209158] node / npm triggering zfs rename deadlock

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209158

--- Comment #17 from Doug Luce <doug at freebsd.con.com> ---
A little more luck, got the panic message at least:

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x118
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff8229551d
stack pointer           = 0x28:0xfffffe01232905e0
frame pointer           = 0x28:0xfffffe0123290600
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 3233 (emacs-25.0.93)
trap number             = 12
panic: page fault
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01232900a0
kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe0123290150
vpanic() at vpanic+0x189/frame 0xfffffe01232901d0
panic() at panic+0x43/frame 0xfffffe0123290230
trap_fatal() at trap_fatal+0x36b/frame 0xfffffe0123290290
trap_pfault() at trap_pfault+0x200/frame 0xfffffe0123290310
trap() at trap+0x4cc/frame 0xfffffe0123290520
calltrap() at calltrap+0x8/frame 0xfffffe0123290520
--- trap 0xc, rip = 0xffffffff8229551d, rsp = 0xfffffe01232905f0, rbp =
0xfffffe0123290600 ---
rrm_exit() at rrm_exit+0xd/frame 0xfffffe0123290600
zfs_freebsd_rename() at zfs_freebsd_rename+0x12e/frame 0xfffffe0123290710
VOP_RENAME_APV() at VOP_RENAME_APV+0xfc/frame 0xfffffe0123290740
kern_renameat() at kern_renameat+0x4a6/frame 0xfffffe01232909a0
amd64_syscall() at amd64_syscall+0x2de/frame 0xfffffe0123290ab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe0123290ab0
--- syscall (128, FreeBSD ELF64, sys_rename), rip = 0x807c5fbaa, rsp =
0x7fffffffc418, rbp = 0x7fffffffc450 ---
Uptime: 28m4s
Automatic reboot in 15 seconds - press a key on the console to abort
--> Press a key on the console to reboot,
--> or switch off the system now.

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