https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278936
Bug ID: 278936
Summary: mqueuefs: Crashes when removing queue as user
Product: Base System
Version: 15.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
A mounted mqueuefs crashes when removing queue as user.
To reproduce:
$ sudo mount -t mqueuefs none /mnt
$ sudo touch /mnt/queue1
$ sudo rm -f /mnt/queue1
This only seems to crash on -CURRENT as I couldn't reproduce on -RELEASE or
-STABLE.
You can use the QEMU VM at
https://download.freebsd.org/snapshots/VM-IMAGES/15.0-CURRENT/amd64/Latest/FreeBSD-15.0-CURRENT-amd64-ufs.qcow2.xz
dmesg log:
Fatal trap 9: general protection fault while in kernel mode
cpuid = 1; apic id = 01
instruction pointer = 0x20:0xffffffff80ba8aae
stack pointer = 0x28:0xfffffe0068c12e50
frame pointer = 0x28:0xfffffe0068c12ec0
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 = 0 (thread taskq)
rdi: deadc0dedeadc0de rsi: 000000000000c0de rdx: 0000000000000000
rcx: 0000000000000001 r8: 0000000000000001 r9: 0000000000000000
rax: 0000000000000001 rbx: fffff800034f6400 rbp: fffffe0068c12ec0
r10: 0000000000010000 r11: 0000000000000001 r12: 0000000000000001
r13: 000000000000c0de r14: fffff800034f6458 r15: fffff80104001020
trap number = 9
panic: general protection fault
cpuid = 1
time = 1715530856
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0068c12b90
vpanic() at vpanic+0x13f/frame 0xfffffe0068c12cc0
panic() at panic+0x43/frame 0xfffffe0068c12d20
trap_fatal() at trap_fatal+0x40b/frame 0xfffffe0068c12d80
calltrap() at calltrap+0x8/frame 0xfffffe0068c12d80
--- trap 0x9, rip = 0xffffffff80ba8aae, rsp = 0xfffffe0068c12e50, rbp =
0xfffffe0068c12ec0 ---
taskqueue_run_locked() at taskqueue_run_locked+0x1be/frame 0xfffffe0068c12ec0
taskqueue_thread_loop() at taskqueue_thread_loop+0xd3/frame 0xfffffe0068c12ef0
fork_exit() at fork_exit+0x82/frame 0xfffffe0068c12f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0068c12f30
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
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