Johannes Thumshirn 0df68fd72b zonefs: handle integer overflow in zonefs_fname_to_fno ...

[ Upstream commit 3a8389d42b ]

In zonefs the file name in one of the two directories corresponds to the
zone number.

Here Alexey reported a possible integer overflow in zonefs_fname_to_fno(),
where the parsing of the zone number from the file name can overflow the
'long' data type.

Add a check for integer overflows and if the fno 'long' did overflow
return -ENOENT.

Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Fixes: d207794aba ("zonefs: Dynamically create file inodes when needed")
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-06-01 17:43:12 +02:00

..

file.c

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Kconfig

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Makefile

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super.c

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sysfs.c

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trace.h

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zonefs.h

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