H.J. Lu 1cd6626a89 __check_pf: Add a cancellation cleanup handler [BZ #20975] ... There are reports for hang in __check_pf: https://github.com/JoeDog/siege/issues/4 It is reproducible only under specific configurations: 1. Large number of cores (>= 64) and large number of threads (> 3X of the number of cores) with long lived socket connection. 2. Low power (frequency) mode. 3. Power management is enabled. While holding lock, __check_pf calls make_request which calls __sendto and __recvmsg. Since __sendto and __recvmsg are cancellation points, lock held by __check_pf won't be released and can cause deadlock when thread cancellation happens in __sendto or __recvmsg. Add a cancellation cleanup handler for __check_pf to unlock the lock when cancelled by another thread. This fixes BZ #20975 and the siege hang issue. (cherry picked from commit a443bd3fb2)		2023-05-23 14:53:23 -07:00
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alpha
arm
bsd	login: Hidden prototypes for _getpt, __ptsname_r, grantpt, unlockpt	2021-06-30 07:28:12 +02:00
i386
inet
mips
powerpc
sh
sysv/linux	__check_pf: Add a cancellation cleanup handler [BZ #20975]	2023-05-23 14:53:23 -07:00
x86_64
confstr.h
get_child_max.c
getlogin_r.c
getlogin.c
getpagesize.c
grantpt.c	login: Hidden prototypes for _getpt, __ptsname_r, grantpt, unlockpt	2021-06-30 07:28:12 +02:00
ifreq.c
Implies
make-syscalls.sh
Makefile
s-proto-cancel.S
s-proto.S
setxid.h
sockatmark.c
syscall-template.S
syscall.S
syscalls.list	misc: Add time64 alias for ioctl	2021-07-21 11:58:09 +02:00
sysdep.h	Linux: Explicitly disable cancellation checking in the dynamic loader	2021-05-10 10:31:41 +02:00