https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249257
Bug ID: 249257
Summary: panic: pgrp 9501 0xfffff8006654a780 pg_jobc 1 cnt 2
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
On amd64 13-CURRENT r365579M, running "truss -f sh" results in the following
panic:
panic: pgrp 9501 0xfffff8006654a780 pg_jobc 1 cnt 2
cpuid = 2
time = 1599852655
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00652068f0
vpanic() at vpanic+0x182/frame 0xfffffe0065206940
panic() at panic+0x43/frame 0xfffffe00652069a0
check_pgrp_jobc() at check_pgrp_jobc+0x124/frame 0xfffffe00652069e0
doenterpgrp() at doenterpgrp+0xc6/frame 0xfffffe0065206a30
enterpgrp() at enterpgrp+0x39e/frame 0xfffffe0065206a80
sys_setpgid() at sys_setpgid+0x219/frame 0xfffffe0065206ad0
amd64_syscall() at amd64_syscall+0x140/frame 0xfffffe0065206bf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0065206bf0
--- syscall (82, FreeBSD ELF64, sys_setpgid), rip = 0x80036f96a, rsp =
0x7fffffffe0d8, rbp = 0x7fffffffe110 ---
KDB: enter: panic
__curthread () at /usr/home/trasz/svn/syscall/sys/amd64/include/pcpu_aux.h:55
55 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
pcpu,
(kgdb) bt
#0 __curthread () at
/usr/home/trasz/svn/syscall/sys/amd64/include/pcpu_aux.h:55
#1 doadump (textdump=0) at
/usr/home/trasz/svn/syscall/sys/kern/kern_shutdown.c:394
#2 0xffffffff8049f9ea in db_dump (dummy=<optimized out>, dummy2=<optimized
out>, dummy3=<unavailable>, dummy4=<unavailable>) at
/usr/home/trasz/svn/syscall/sys/ddb/db_command.c:575
#3 0xffffffff8049f7b0 in db_command (last_cmdp=<optimized out>,
cmd_table=<optimized out>, dopager=1) at
/usr/home/trasz/svn/syscall/sys/ddb/db_command.c:482
#4 0xffffffff8049f50d in db_command_loop () at
/usr/home/trasz/svn/syscall/sys/ddb/db_command.c:535
#5 0xffffffff804a2826 in db_trap (type=<optimized out>, code=<optimized out>)
at /usr/home/trasz/svn/syscall/sys/ddb/db_main.c:270
#6 0xffffffff80c22954 in kdb_trap (type=3, code=0, tf=<optimized out>) at
/usr/home/trasz/svn/syscall/sys/kern/subr_kdb.c:699
#7 0xffffffff8101e63e in trap (frame=0xfffffe0065206820) at
/usr/home/trasz/svn/syscall/sys/amd64/amd64/trap.c:576
#8 <signal handler called>
#9 kdb_enter (why=0xffffffff811eca2f "panic", msg=<optimized out>) at
/usr/home/trasz/svn/syscall/sys/kern/subr_kdb.c:486
#10 0xffffffff80bd71be in vpanic (fmt=<optimized out>, ap=<optimized out>) at
/usr/home/trasz/svn/syscall/sys/kern/kern_shutdown.c:902
#11 0xffffffff80bd6f63 in panic (fmt=0xffffffff81c8dbc8 <cnputs_mtx>
"\250\357\032\201\377\377\377\377") at
/usr/home/trasz/svn/syscall/sys/kern/kern_shutdown.c:839
#12 0xffffffff80bbe174 in check_pgrp_jobc (pgrp=0xfffff8006654a780) at
/usr/home/trasz/svn/syscall/sys/kern/kern_proc.c:667
#13 0xffffffff80bba476 in doenterpgrp (p=0xfffff8016a7d0000,
pgrp=0xfffff80008ba7880) at
/usr/home/trasz/svn/syscall/sys/kern/kern_proc.c:691
#14 0xffffffff80bba2ee in enterpgrp (p=0xfffff8016a7d0000, pgid=<optimized
out>, pgrp=0xfffff80008ba7880, sess=0x0) at
/usr/home/trasz/svn/syscall/sys/kern/kern_proc.c:606
#15 0xffffffff80bc2389 in sys_setpgid (td=0xfffffe0064d1fa00, uap=<optimized
out>) at /usr/home/trasz/svn/syscall/sys/kern/kern_prot.c:434
#16 0xffffffff8101f480 in syscallenter (td=<optimized out>) at
/usr/home/trasz/svn/syscall/sys/amd64/amd64/../../kern/subr_syscall.c:162
#17 amd64_syscall (td=0xfffffe0064d1fa00, traced=0) at
/usr/home/trasz/svn/syscall/sys/amd64/amd64/trap.c:1156
#18 <signal handler called>
#19 0x000000080036f96a in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffffe0d8
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