[compiler-rt] Remove dlsym interceptor and support `-shared-libsan` for CSan
Summary:
Follow the UBSan offload runtime. Offload now resolves HSA through the
global scope, so the `dlsym` interceptor is no longer needed. The real
HSA entry points are still taken from the loaded HSA library rather than
`RTLD_NEXT`, since every DSO with a static runtime exports the same
wrappers and they would otherwise chain back into each other.
Build `libclang_rt.csan.so` with the offload objects folded in. The
exported HSA wrappers report failure when HSA is absent and warn when HSA
was loaded ahead of the runtime. The preinit hook moves to a separate
`csan_offload-preinit` archive for executables.
[compiler-rt] Add 'csan' library for the concurrency sanitizer
Summary:
Adds the runtime for the concurrency sanitizer, both CPU and GPU.
Fundamentally, this works using the following pseudocode:
```c
static u64 watchpoints[N]; // Hash-indexed, zero is empty.
// Emitted before the access, so we never trip on our own write.
void check_access(volatile void *addr, u32 size, u32 type) {
// Every access probes. A read conflicts only with a watched write, a
// write conflicts with either.
if (u64 *wp = find_watchpoint(addr, size, type))
consume(wp, this_pc()); // Hand our location to the owner.
if (!should_sample()) // Wave-uniform, 1-in-N chance.
return;
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[Clang] Support `-shared-libsan` for offload CSan
Summary:
Follow the UBSan handling. The shared runtime embeds the HSA
interceptors, so `csan_offload` is only linked with static runtimes and
executables pull in `csan_offload-preinit` to initialize early.
[Clang] Add support for the `-fsanitize=concurrency` runtime
Summary:
Add the frontend sanitizer kind, function attributes, pass pipeline
integration, predefined macro, driver handling, and documentation for
ConcurrencySanitizer.
amdgpio: Suspend routine
Mask all interrupts when suspending and warn when there are unserviced
interrupts which might block entry to S0i3.
In the future we won't want to mask wake interrupts.
Once we can actually make use of GPIO interrupts on x86, we'll also want
to unmask relevant pins when resuming.
Reviewed by: aokblast, avg
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D51589
[offload][nfc] Pull OpenMP's InteropTbl out of PluginManager
PluginManager is shared with OpenACC, so the OpenMP interop table moves
to OmpPluginManager in libomptarget. The OpenMP PM is defined there, and
interop cleanup is registered from initRuntime.
[RISCV] Custom lower fixed length mask_beforefirst (#230482)
Rather than add a new _VL node, just put it in a scalable container with
VLMAX so it gets the scalable vmsbf.m pattern. RISCVVLOptimizer can
optimize the VL of it based on its users.
[SLP]Fix crash for widened strided loads/stores of pointers
The widened strided access type always has integer elements, so casting
its result to a pointer vector type (or a pointer vector value to it)
requires a ptr/int conversion plus a bitcast.
Fixes #230447
Reviewers:
Pull Request: https://github.com/llvm/llvm-project/pull/230683
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
Pull fsverity fix from Eric Biggers:
"Fix a regression from commit f77f281b6118 ("fsverity: use a hashtable
to find the fsverity_info")"
* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux:
fsverity: RCU-delay the freeing of struct fsverity_info
fix(AMDGPU): fold AND of any-extended booleans
Demanded-bits simplification can turn a boolean sign extension into an
any extension before the target AND combine. Choose sign extension for
the undefined high bits so the AND still folds to a select.
Cover reduced demand, swapped operands, and zero extension.
Merge tag 'vfs-7.3-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"This contains fixes for the current development cycle.
All of them came out of a review of the mount code that started with a
bug report. The review modeled the corner cases of mount propagation,
unmounting and mount reference counting and turned up a lot of bugs.
Most of them years old. Most fixes come with a selftest.
- Rework connected mounts.
A mount that is unmounted together with its parent can stay
attached to the parent to keep its mountpoint covered. That happens
when the mountpoint is removed with rmdir(), unlink() or rename(),
when a detached tree is dissolved, and for locked mounts in any
umount that isn't synchronous, including the teardown of their
mount namespace. The parent then owns the child and drops it on its
own final mntput(). So any reference from the child's superblock
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[AMDGPU] Add async and tensor waits to `isWaitcnt` (#230663)
`S_WAIT_ASYNCCNT` and `S_WAIT_TENSORCNT` were missing, so passes treated
them as ordinary instructions. `S_SET_VGPR_MSB` was not coissued past
them, and `SIPreEmitPeephole` could drop the execz skip around them.
