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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-09 09:54:46 -0700 |
commit | a5ad5742f671de906adbf29fbedf0a04705cebad (patch) | |
tree | 88d1a4c18e2025a5a8335dbbc9dea8bebeba5789 /arch/sh/mm/fault.c | |
parent | 013b2deba9a6b80ca02f4fafd7dedf875e9b4450 (diff) | |
parent | 4fa7252338a56fbc90220e6330f136a379175a7a (diff) | |
download | linux-a5ad5742f671de906adbf29fbedf0a04705cebad.tar.gz linux-a5ad5742f671de906adbf29fbedf0a04705cebad.tar.bz2 linux-a5ad5742f671de906adbf29fbedf0a04705cebad.zip |
Merge branch 'akpm' (patches from Andrew)
Merge even more updates from Andrew Morton:
- a kernel-wide sweep of show_stack()
- pagetable cleanups
- abstract out accesses to mmap_sem - prep for mmap_sem scalability work
- hch's user acess work
Subsystems affected by this patch series: debug, mm/pagemap, mm/maccess,
mm/documentation.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (93 commits)
include/linux/cache.h: expand documentation over __read_mostly
maccess: return -ERANGE when probe_kernel_read() fails
x86: use non-set_fs based maccess routines
maccess: allow architectures to provide kernel probing directly
maccess: move user access routines together
maccess: always use strict semantics for probe_kernel_read
maccess: remove strncpy_from_unsafe
tracing/kprobes: handle mixed kernel/userspace probes better
bpf: rework the compat kernel probe handling
bpf:bpf_seq_printf(): handle potentially unsafe format string better
bpf: handle the compat string in bpf_trace_copy_string better
bpf: factor out a bpf_trace_copy_string helper
maccess: unify the probe kernel arch hooks
maccess: remove probe_read_common and probe_write_common
maccess: rename strnlen_unsafe_user to strnlen_user_nofault
maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel_nofault
maccess: rename strncpy_from_unsafe_user to strncpy_from_user_nofault
maccess: update the top of file comment
maccess: clarify kerneldoc comments
maccess: remove duplicate kerneldoc comments
...
Diffstat (limited to 'arch/sh/mm/fault.c')
-rw-r--r-- | arch/sh/mm/fault.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index 7260a1a7fdca..fbe1f2fe9a8c 100644 --- a/arch/sh/mm/fault.c +++ b/arch/sh/mm/fault.c @@ -214,7 +214,7 @@ show_fault_oops(struct pt_regs *regs, unsigned long address) : "paging request", address); pr_alert("PC:"); - printk_address(regs->pc, 1); + printk_address(regs->pc, 1, KERN_ALERT); show_pte(NULL, address); } @@ -279,7 +279,7 @@ __bad_area(struct pt_regs *regs, unsigned long error_code, * Something tried to access memory that isn't in our memory map.. * Fix it, but check if it's kernel or user first.. */ - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); __bad_area_nosemaphore(regs, error_code, address, si_code); } @@ -303,7 +303,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address) struct task_struct *tsk = current; struct mm_struct *mm = tsk->mm; - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); /* Kernel mode? Handle exceptions or die: */ if (!user_mode(regs)) @@ -326,9 +326,9 @@ mm_fault_error(struct pt_regs *regs, unsigned long error_code, return 1; } - /* Release mmap_sem first if necessary */ + /* Release mmap_lock first if necessary */ if (!(fault & VM_FAULT_RETRY)) - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); if (!(fault & VM_FAULT_ERROR)) return 0; @@ -442,7 +442,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs, } retry: - down_read(&mm->mmap_sem); + mmap_read_lock(mm); vma = find_vma(mm, address); if (unlikely(!vma)) { @@ -502,7 +502,7 @@ good_area: flags |= FAULT_FLAG_TRIED; /* - * No need to up_read(&mm->mmap_sem) as we would + * No need to mmap_read_unlock(mm) as we would * have already released it in __lock_page_or_retry * in mm/filemap.c. */ @@ -510,5 +510,5 @@ good_area: } } - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); } |