Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'parisc-for-6.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fix from Helge Deller:
"Fix a double SIGFPE crash"
* tag 'parisc-for-6.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix double SIGFPE crash
+13
-3
+13
-3
arch/parisc/math-emu/driver.c
+13
-3
arch/parisc/math-emu/driver.c
···
97
97
98
98
memcpy(regs->fr, frcopy, sizeof regs->fr);
99
99
if (signalcode != 0) {
100
-
force_sig_fault(signalcode >> 24, signalcode & 0xffffff,
101
-
(void __user *) regs->iaoq[0]);
102
-
return -1;
100
+
int sig = signalcode >> 24;
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+
102
+
if (sig == SIGFPE) {
103
+
/*
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+
* Clear floating point trap bit to avoid trapping
105
+
* again on the first floating-point instruction in
106
+
* the userspace signal handler.
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+
*/
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+
regs->fr[0] &= ~(1ULL << 38);
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+
}
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+
force_sig_fault(sig, signalcode & 0xffffff,
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+
(void __user *) regs->iaoq[0]);
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+
return -1;
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}
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return signalcode ? -1 : 0;