linux

iv/linux

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Vasily Gorbik 2095574632 s390/kasan: avoid false positives during stack unwind

Avoid kasan false positive when current task is interrupted in-between
stack frame allocation and backchain write instructions leaving new stack
frame backchain invalid. In particular if backchain is 0 the unwinder
tries to read pt_regs from the stack and might hit kasan poisoned bytes,
leading to kasan "stack-out-of-bounds" report.

Disable kasan instrumentation of unwinder stack reads, since this
limitation couldn't be handled otherwise with current backchain unwinder
implementation.

Fixes: 78c98f907413 ("s390/unwind: introduce stack unwind API")
Reported-by: Julian Wiedmann <jwi@linux.ibm.com>
Tested-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

2019-07-02 16:00:27 +02:00

appldata

sched: loadavg: consolidate LOAD_INT, LOAD_FRAC, CALC_LOAD

2018-10-26 16:26:32 -07:00

boot

s390/boot: fix compiler error due to missing awk strtonum

2019-05-07 14:37:14 +02:00

configs

s390: replace defconfig with performance_defconfig

2019-06-19 17:54:27 +02:00

crypto

s390/crypto: sha: Use -ENODEV instead of -EOPNOTSUPP