61bf318eac
In https://bugs.gentoo.org/769614 Dmitry noticed that `ptrace(PTRACE_GET_SYSCALL_INFO)` does not return error sign properly. The bug is in mismatch between get/set errors: static inline long syscall_get_error(struct task_struct *task, struct pt_regs *regs) { return regs->r10 == -1 ? regs->r8:0; } static inline long syscall_get_return_value(struct task_struct *task, struct pt_regs *regs) { return regs->r8; } static inline void syscall_set_return_value(struct task_struct *task, struct pt_regs *regs, int error, long val) { if (error) { /* error < 0, but ia64 uses > 0 return value */ regs->r8 = -error; regs->r10 = -1; } else { regs->r8 = val; regs->r10 = 0; } } Tested on v5.10 on rx3600 machine (ia64 9040 CPU). Link: https://lkml.kernel.org/r/20210221002554.333076-2-slyfox@gentoo.org Link: https://bugs.gentoo.org/769614 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> Reported-by: Dmitry V. Levin <ldv@altlinux.org> Reviewed-by: Dmitry V. Levin <ldv@altlinux.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| cpu.h | ||
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| device.h | ||
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| hardirq.h | ||
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| idle.h | ||
| intrinsics.h | ||
| io.h | ||
| iommu.h | ||
| iommu_table.h | ||
| iosapic.h | ||
| irq.h | ||
| irq_regs.h | ||
| irq_remapping.h | ||
| irqflags.h | ||
| kdebug.h | ||
| kexec.h | ||
| kprobes.h | ||
| kregs.h | ||
| libata-portmap.h | ||
| linkage.h | ||
| local.h | ||
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| mmu.h | ||
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| mmzone.h | ||
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| param.h | ||
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| patch.h | ||
| pci.h | ||
| percpu.h | ||
| pgalloc.h | ||
| pgtable.h | ||
| processor.h | ||
| ptrace.h | ||
| sal.h | ||
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| serial.h | ||
| shmparam.h | ||
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| smp.h | ||
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| string.h | ||
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| syscall.h | ||
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| unaligned.h | ||
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