https://github.com/torvalds/linux
Revision 3b3376f222e3ab58367d9dd405cafd09d5e37b7c authored by Lin Feng on 26 February 2021, 01:20:53 UTC, committed by Linus Torvalds on 26 February 2021, 17:41:03 UTC
Apart from subsystem specific .proc_handler handler, all ctl_tables with extra1 and extra2 members set should use proc_dointvec_minmax instead of proc_dointvec, or the limit set in extra* never work and potentially echo underflow values(negative numbers) is likely make system unstable. Especially vfs_cache_pressure and zone_reclaim_mode, -1 is apparently not a valid value, but we can set to them. And then kernel may crash. # echo -1 > /proc/sys/vm/vfs_cache_pressure Link: https://lkml.kernel.org/r/20201223105535.2875-1-linf@wangsu.com Signed-off-by: Lin Feng <linf@wangsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 4508943
Tip revision: 3b3376f222e3ab58367d9dd405cafd09d5e37b7c authored by Lin Feng on 26 February 2021, 01:20:53 UTC
sysctl.c: fix underflow value setting risk in vm_table
sysctl.c: fix underflow value setting risk in vm_table
Tip revision: 3b3376f
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| init | ||
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| .clang-format | -rw-r--r-- | 16.4 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 62 bytes |
| .gitignore | -rw-r--r-- | 1.9 KB |
| .mailmap | -rw-r--r-- | 18.5 KB |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 98.4 KB |
| Kbuild | -rw-r--r-- | 1.3 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 576.4 KB |
| Makefile | -rw-r--r-- | 64.5 KB |
| README | -rw-r--r-- | 727 bytes |
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