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| author | Florian Weimer <fweimer@redhat.com> | 2021-12-09 09:49:32 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-12-09 09:49:32 +0100 |
| commit | a41c8e92350e744a4bc639df5025153d05263e7f (patch) | |
| tree | cf0cd4d0cdc757f83409f2c0c867a0b2a2ae6828 /nptl | |
| parent | c901c3e764d7c7079f006b4e21e877d5036eb4f5 (diff) | |
| download | glibc-a41c8e92350e744a4bc639df5025153d05263e7f.tar.gz glibc-a41c8e92350e744a4bc639df5025153d05263e7f.tar.xz glibc-a41c8e92350e744a4bc639df5025153d05263e7f.zip | |
nptl: rseq failure after registration on main thread is fatal
This simplifies the application programming model. Browser sandboxes have already been fixed: Sandbox is incompatible with rseq registration <https://bugzilla.mozilla.org/show_bug.cgi?id=1651701> Allow rseq in the Linux sandboxes. r=gcp <https://hg.mozilla.org/mozilla-central/rev/042425712eb1> Sandbox needs to support rseq system call <https://bugs.chromium.org/p/chromium/issues/detail?id=1104160> Linux sandbox: Allow rseq(2) <https://chromium.googlesource.com/chromium/src.git/+/230675d9ac8f1> Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/pthread_create.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c index 4608fd9068..c097fc54e6 100644 --- a/nptl/pthread_create.c +++ b/nptl/pthread_create.c @@ -370,7 +370,8 @@ start_thread (void *arg) /* Register rseq TLS to the kernel. */ { bool do_rseq = THREAD_GETMEM (pd, flags) & ATTR_FLAG_DO_RSEQ; - rseq_register_current_thread (pd, do_rseq); + if (!rseq_register_current_thread (pd, do_rseq) && do_rseq) + __libc_fatal ("Fatal glibc error: rseq registration failed\n"); } #ifndef __ASSUME_SET_ROBUST_LIST |