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| author | Andi Kleen <ak@linux.intel.com> | 2010-09-27 22:03:33 +0200 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2010-10-07 09:45:44 +0200 |
| commit | 0d9ee6a2d4a6e92c49e6fa9469e5731d21ee203e (patch) | |
| tree | 563ee93b63198db99f60fff24f98db3d9d12cc08 /mm | |
| parent | HWPOISON: Copy si_addr_lsb to user (diff) | |
| download | linux-0d9ee6a2d4a6e92c49e6fa9469e5731d21ee203e.tar.xz linux-0d9ee6a2d4a6e92c49e6fa9469e5731d21ee203e.zip | |
HWPOISON: Report correct address granuality for AO huge page errors
The SIGBUS user space signalling is supposed to report the
address granuality of a corruption. Pass this information correctly
for huge pages by querying the hpage order.
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory-failure.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 9c26eeca1342..cd7e6974de77 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -183,7 +183,7 @@ EXPORT_SYMBOL_GPL(hwpoison_filter); * signal. */ static int kill_proc_ao(struct task_struct *t, unsigned long addr, int trapno, - unsigned long pfn) + unsigned long pfn, struct page *page) { struct siginfo si; int ret; @@ -198,7 +198,7 @@ static int kill_proc_ao(struct task_struct *t, unsigned long addr, int trapno, #ifdef __ARCH_SI_TRAPNO si.si_trapno = trapno; #endif - si.si_addr_lsb = PAGE_SHIFT; + si.si_addr_lsb = compound_order(compound_head(page)) + PAGE_SHIFT; /* * Don't use force here, it's convenient if the signal * can be temporarily blocked. @@ -327,7 +327,7 @@ static void add_to_kill(struct task_struct *tsk, struct page *p, * wrong earlier. */ static void kill_procs_ao(struct list_head *to_kill, int doit, int trapno, - int fail, unsigned long pfn) + int fail, struct page *page, unsigned long pfn) { struct to_kill *tk, *next; @@ -352,7 +352,7 @@ static void kill_procs_ao(struct list_head *to_kill, int doit, int trapno, * process anyways. */ else if (kill_proc_ao(tk->tsk, tk->addr, trapno, - pfn) < 0) + pfn, page) < 0) printk(KERN_ERR "MCE %#lx: Cannot send advisory machine check signal to %s:%d\n", pfn, tk->tsk->comm, tk->tsk->pid); @@ -928,7 +928,7 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn, * any accesses to the poisoned memory. */ kill_procs_ao(&tokill, !!PageDirty(hpage), trapno, - ret != SWAP_SUCCESS, pfn); + ret != SWAP_SUCCESS, p, pfn); return ret; } |