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History log of /src/lib/libpthread/pthread_attr_getguardsize.3
RevisionDateAuthorComments
 1.6  07-Dec-2023  riastradh pthread: Document the setstack vs setguardsize bug.

Suggest the safe, compatible workaround.
 1.5  22-Oct-2017  abhinav branches: 1.5.14;
Add missing function names in the NAME section for rest of the man pages in libpthread
 1.4  02-Jul-2017  joerg Export the guard size of the main thread via vm.guard_size. Add a
complementary writable sysctl for the initial guard size of threads
created via pthread_create. Let the existing attribut accessors do the
right thing. Raise the default guard size for threads to 64KB.
 1.3  07-Apr-2016  dholland branches: 1.3.8;
_SC_PAGESIZE is not the page size; it's a symbolic code for retrieving
the page size.
 1.2  08-Jul-2010  wiz Whitespace nit.
 1.1  07-Jul-2010  jruoho Move pthread_attr_getguardsize() and pthread_attr_setguardsize() to a
separate page, and actually document these.
 1.3.8.1  31-Aug-2017  bouyer Pull up following revision(s) (requested by joerg in ticket #234):
sys/arch/amd64/include/vmparam.h: revision 1.43
sys/kern/exec_subr.c: revision 1.79
lib/libpthread/pthread_int.h: revision 1.94
sys/arch/mips/include/vmparam.h: revision 1.58
sys/arch/mips/include/vmparam.h: revision 1.59
lib/libpthread/TODO: revision 1.19
sys/arch/powerpc/include/vmparam.h: revision 1.20
sys/arch/riscv/include/vmparam.h: revision 1.2
sys/arch/riscv/include/vmparam.h: revision 1.3
sys/arch/i386/include/vmparam.h: revision 1.85
tests/lib/libpthread/t_join.c: revision 1.9
sys/uvm/uvm_meter.c: revision 1.66
sys/uvm/uvm_param.h: revision 1.36
sys/kern/exec_subr.c: revision 1.80
sys/uvm/uvm_param.h: revision 1.37
sys/kern/exec_subr.c: revision 1.81
sys/kern/exec_subr.c: revision 1.82
lib/libpthread/pthread_attr_getguardsize.3: revision 1.4
lib/libpthread/pthread.c: revision 1.148
lib/libpthread/pthread_attr.c: revision 1.17
sys/arch/amd64/include/vmparam.h: revision 1.42
Always include a 1MB guard area beyond the end of stack. While ASLR will
normally create a guard area as well, this provides a deterministic area
for all binaries.
Mitigates the rest of CVE-2017-1000374 and CVE-2017-1000375 from
Qualys.
Revert for the moment, creates problems on i386.
Recommit exec_subr.c revision 1.79:
Always include a 1MB guard area beyond the end of stack. While ASLR will
normally create a guard area as well, this provides a deterministic area
for all binaries.
Mitigates the rest of CVE-2017-1000374 and CVE-2017-1000375 from
Qualys.
Additionally, change VM_DEFAULT_ADDRESS_TOPDOWN to include
user_stack_guard_size in the size reservation.
Update VM_DEFAULT_ADDRESS32_TOPDOWN to include guard area.
Export the guard size of the main thread via vm.guard_size. Add a
complementary writable sysctl for the initial guard size of threads
created via pthread_create. Let the existing attribut accessors do the
right thing. Raise the default guard size for threads to 64KB.
 1.5.14.1  20-Jul-2024  martin Pull up following revision(s) (requested by rin in ticket #758):

lib/libpthread/pthread_attr_getstack.3: revision 1.9
lib/libpthread/pthread_attr_getguardsize.3: revision 1.6

pthread: Document the setstack vs setguardsize bug.
Suggest the safe, compatible workaround.

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