mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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| Filename | Latest commit message | Latest commit date |
|---|---|---|
920d451f9c
The current tests for read/write after free work on slab allocated memory. Memory straight from the buddy allocator may behave slightly differently and have a different set of parameters to test. Add tests for those cases as well. On a basic x86 boot: # echo WRITE_BUDDY_AFTER_FREE > /sys/kernel/debug/provoke-crash/DIRECT [ 22.291950] lkdtm: Performing direct entry WRITE_BUDDY_AFTER_FREE [ 22.292983] lkdtm: Writing to the buddy page before free [ 22.293950] lkdtm: Attempting bad write to the buddy page after free # echo READ_BUDDY_AFTER_FREE > /sys/kernel/debug/provoke-crash/DIRECT [ 32.375601] lkdtm: Performing direct entry READ_BUDDY_AFTER_FREE [ 32.379896] lkdtm: Value in memory before free: 12345678 [ 32.383854] lkdtm: Attempting to read from freed memory [ 32.389309] lkdtm: Buddy page was not poisoned On x86 with CONFIG_DEBUG_PAGEALLOC and debug_pagealloc=on: # echo WRITE_BUDDY_AFTER_FREE > /sys/kernel/debug/provoke-crash/DIRECT [ 17.475533] lkdtm: Performing direct entry WRITE_BUDDY_AFTER_FREE [ 17.477360] lkdtm: Writing to the buddy page before free [ 17.479089] lkdtm: Attempting bad write to the buddy page after free [ 17.480904] BUG: unable to handle kernel paging request at ffff88000ebd8000 # echo READ_BUDDY_AFTER_FREE > /sys/kernel/debug/provoke-crash/DIRECT [ 14.606433] lkdtm: Performing direct entry READ_BUDDY_AFTER_FREE [ 14.607447] lkdtm: Value in memory before free: 12345678 [ 14.608161] lkdtm: Attempting to read from freed memory [ 14.608860] BUG: unable to handle kernel paging request at ffff88000eba3000 Note that arches without ARCH_SUPPORTS_DEBUG_PAGEALLOC may not produce the same crash. Signed-off-by: Laura Abbott <labbott@fedoraproject.org> Signed-off-by: Kees Cook <keescook@chromium.org> |
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| .. | ||
| altera-stapl | ||
| c2port | ||
| cb710 | ||
| cxl | ||
| echo | ||
| eeprom | ||
| genwqe | ||
| ibmasm | ||
| lis3lv02d | ||
| mei | ||
| mic | ||
| sgi-gru | ||
| sgi-xp | ||
| ti-st | ||
| vmw_vmci | ||
| ad525x_dpot-i2c.c | ||
| ad525x_dpot-spi.c | ||
| ad525x_dpot.c | ||
| ad525x_dpot.h | ||
| apds990x.c | ||
| apds9802als.c | ||
| arm-charlcd.c | ||
| atmel-ssc.c | ||
| atmel_tclib.c | ||
| bh1770glc.c | ||
| bh1780gli.c | ||
| bmp085-i2c.c | ||
| bmp085-spi.c | ||
| bmp085.c | ||
| bmp085.h | ||
| cs5535-mfgpt.c | ||
| ds1682.c | ||
| dummy-irq.c | ||
| enclosure.c | ||
| fsa9480.c | ||
| hmc6352.c | ||
| hpilo.c | ||
| hpilo.h | ||
| ics932s401.c | ||
| ioc4.c | ||
| isl29003.c | ||
| isl29020.c | ||
| Kconfig | ||
| kgdbts.c | ||
| lattice-ecp3-config.c | ||
| lkdtm.c | ||
| Makefile | ||
| pch_phub.c | ||
| phantom.c | ||
| pti.c | ||
| qcom-coincell.c | ||
| spear13xx_pcie_gadget.c | ||
| sram.c | ||
| ti_dac7512.c | ||
| tifm_7xx1.c | ||
| tifm_core.c | ||
| tsl2550.c | ||
| vexpress-syscfg.c | ||
| vmw_balloon.c | ||