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| author | Kees Cook <[email protected]> | 2024-02-01 17:32:58 +0000 |
|---|---|---|
| committer | Russell King (Oracle) <[email protected]> | 2024-02-24 16:47:20 +0000 |
| commit | 169f9102f9198b04afffa6164372a4ba4070f412 (patch) | |
| tree | c6f6b01f8900066b45c8730e03fd7a8284b4abc1 /tools/perf/scripts/python/mem-phys-addr.py | |
| parent | ARM: 9349/1: unwind: Add missing "Call trace:" line (diff) | |
| download | kernel-169f9102f9198b04afffa6164372a4ba4070f412.tar.gz kernel-169f9102f9198b04afffa6164372a4ba4070f412.zip | |
ARM: 9350/1: fault: Implement copy_from_kernel_nofault_allowed()
Under PAN emulation when dumping backtraces from things like the
LKDTM EXEC_USERSPACE test[1], a double fault (which would hang a CPU)
would happen because of dump_instr() attempting to read a userspace
address. Make sure copy_from_kernel_nofault() does not attempt this
any more.
Closes: https://lava.sirena.org.uk/scheduler/job/497571
Link: https://lore.kernel.org/all/202401181125.D48DCB4C@keescook/ [1]
Reported-by: Mark Brown <[email protected]>
Suggested-by: Russell King (Oracle) <[email protected]>
Reviewed-by: Ard Biesheuvel <[email protected]>
Tested-by: Mark Brown <[email protected]>
Cc: Wang Kefeng <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Ben Hutchings <[email protected]>
Cc: [email protected]
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Russell King (Oracle) <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/mem-phys-addr.py')
0 files changed, 0 insertions, 0 deletions