Yuanyuan ZhongandGreg Kroah-Hartman 2eeff6e36c mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again ...

commit 6d065f507d upstream.

After switching smaps_rollup to use VMA iterator, searching for next entry
is part of the condition expression of the do-while loop.  So the current
VMA needs to be addressed before the continue statement.

Otherwise, with some VMAs skipped, userspace observed memory
consumption from /proc/pid/smaps_rollup will be smaller than the sum of
the corresponding fields from /proc/pid/smaps.

Link: https://lkml.kernel.org/r/20240523183531.2535436-1-yzhong@purestorage.com
Fixes: c4c84f0628 ("fs/proc/task_mmu: stop using linked list and highest_vm_end")
Signed-off-by: Yuanyuan Zhong <yzhong@purestorage.com>
Reviewed-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-06-16 13:47:42 +02:00

..

array.c

fs/proc: do_task_stat: move thread_group_cputime_adjusted() outside of lock_task_sighand()

2024-02-23 09:25:17 +01:00

base.c

mm/ksm: fix ksm_zero_pages accounting

2024-06-16 13:47:41 +02:00

bootconfig.c

…

cmdline.c

…

consoles.c

…

cpuinfo.c

…

devices.c

…

fd.c

proc: Move fdinfo PTRACE_MODE_READ check into the inode .permission operation

2024-06-16 13:47:33 +02:00

fd.h

…

generic.c

…

inode.c

…

internal.h

proc: nommu: fix empty /proc/<pid>/maps

2023-09-19 13:21:34 -07:00

interrupts.c

…

Kconfig

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kcore.c

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kmsg.c

…

loadavg.c

…

Makefile

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meminfo.c

mm: memtest: convert to memtest_report_meminfo()

2023-08-21 13:37:47 -07:00

namespaces.c

…

nommu.c

…

page.c

mm: support page_mapcount() on page_has_type() pages

2024-05-02 16:32:43 +02:00

proc_net.c

Merge tag 'v6.6-fs.proc.uapi' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2023-08-28 11:43:19 -07:00

proc_sysctl.c

sysctl: Fix out of bounds access for empty sysctl registers

2024-02-05 20:14:17 +00:00

proc_tty.c

…

root.c

…

self.c

…

softirqs.c

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stat.c

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task_mmu.c

mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again

2024-06-16 13:47:42 +02:00

task_nommu.c

proc: nommu: fix empty /proc/<pid>/maps

2023-09-19 13:21:34 -07:00

thread_self.c

…

uptime.c

…

util.c

…

version.c

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vmcore.c

…