glibc/stdlib
Adhemerval Zanella 961d7cff51 stdlib: Add testcase for BZ #26241
Old implementation of realpath allocates a PATH_MAX using alloca for
each symlink in the path, leading to MAXSYMLINKS times PATH_MAX
maximum stack usage.

The test create a symlink with __eloop_threshold() loops and creates
a thread with minimum stack size (obtained through
support_small_stack_thread_attribute).  The thread issues a stack
allocations that fill the thread allocated stack minus some slack
plus and the realpath usage (which assumes a bounded stack usage).
If realpath uses more than about 2 * PATH_MAX plus some slack it
triggers a stackoverflow.

Checked on x86_64-linux-gnu and i686-linux-gnu.

Reviewed-by: DJ Delorie <dj@redhat.com>
2021-01-20 11:13:53 -03:00
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bug-fmtmsg1.c
bug-getcontext.c Simplify tilegx sysdeps folder 2017-12-20 16:55:26 -02:00
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canonicalize.c stdlib: Sync canonicalize with gnulib [BZ #10635] [BZ #26592] [BZ #26341] [BZ #24970] 2021-01-05 11:33:16 -03:00
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Makefile stdlib: Add testcase for BZ #26241 2021-01-20 11:13:53 -03:00
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test-bz22786.c stdlib: Sync canonicalize with gnulib [BZ #10635] [BZ #26592] [BZ #26341] [BZ #24970] 2021-01-05 11:33:16 -03:00
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tst-strtod-round-data Fix strtod multiple-precision division bug (bug 26137). 2020-06-30 23:04:06 +00:00
tst-strtod-round-data.h Fix strtod multiple-precision division bug (bug 26137). 2020-06-30 23:04:06 +00:00
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tst-system.c posix: Fix return value of system if shell can not be executed [BZ #27053] 2021-01-11 12:26:58 -03:00
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Versions Move __fentry__ version definition to sysdeps/{i386,x86_64} 2018-08-10 09:07:44 +02:00
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