padata/pcrypt: fixes
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- v1 Latest4 patches 1 replyIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | padata: Fix cpu index countingkernel/ | +1 | 0 replies | |
| 2/4 | padata: Allocate cpumask dependend recources in any casekernel/ | +7 | 0 replies | |
| 3/4 | padata: Check for valid cpumaskskernel/ | +1 | 0 replies | |
| 4/4 | crypto: pcrypt - Dont calulate a callback cpu on empty callback cpumaskcrypto/ | +3 | 0 replies |
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Cover letter [PATCH 0/4] padata/pcrypt: fixes
This patchset contains the following fixes:
1. padata - Fix a potential hang of the parallel worker threads on cpu hotplug.
2. padata - Fix two NULL pointer dereference crashes if one of the padata cpumasks is empty. The crashes can be triggered by doing echo 0 > /sys/kernel/pcrypt/pencrypt/[parallel_cpumask/serial_cpumask]
3. padata - Fix a division by zero crash if the parallel cpumask contains no active cpu. Can be triggered by doing
echo 0 > /sys/kernel/pcrypt/pencrypt/parallel_cpumask
4. pcrypt - Fix division by zero crash if the callback cpumask is empty. Can be triggered by doing
echo 0 > /sys/kernel/pcrypt/pencrypt/serial_cpumask
I ran a script that does cpumask changes and cpu hotplugs as fast as possible while sending IPsec packets on maximal rate with pcrypt. It showed no furter crashes overnight, so I hope I've got them all.
padata API corrections and some minor fixes/cleanups are comming later.
Steffen