Tomislav Novak dc1d81ee93 hw_breakpoint: fix single-stepping when using bpf_overflow_handler ... [ Upstream commit d11a69873d ] Arm platforms use is_default_overflow_handler() to determine if the hw_breakpoint code should single-step over the breakpoint trigger or let the custom handler deal with it. Since bpf_overflow_handler() currently isn't recognized as a default handler, attaching a BPF program to a PERF_TYPE_BREAKPOINT event causes it to keep firing (the instruction triggering the data abort exception is never skipped). For example: # bpftrace -e 'watchpoint:0x10000:4:w { print("hit") }' -c ./test Attaching 1 probe... hit hit [...] ^C (./test performs a single 4-byte store to 0x10000) This patch replaces the check with uses_default_overflow_handler(), which accounts for the bpf_overflow_handler() case by also testing if one of the perf_event_output functions gets invoked indirectly, via orig_default_handler. Signed-off-by: Tomislav Novak <tnovak@meta.com> Tested-by: Samuel Gosselin <sgosselin@google.com> # arm64 Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/linux-arm-kernel/20220923203644.2731604-1-tnovak@fb.com/ Link: https://lore.kernel.org/r/20230605191923.1219974-1-tnovak@meta.com Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-09-23 11:11:00 +02:00
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acpi	…
asm-generic	…
clocksource	…
crypto	crypto: api - Use work queue in crypto_destroy_instance	2023-09-13 09:42:32 +02:00
drm	drm/display/dp: Fix the DP DSC Receiver cap size	2023-08-30 16:11:09 +02:00
dt-bindings	dt-bindings: clock: qcom,gcc-sc8280xp: Add missing GDSCs	2023-09-13 09:42:45 +02:00
keys	…
kunit	…
kvm	KVM: arm64: vgic-v4: Make the doorbell request robust w.r.t preemption	2023-08-23 17:52:28 +02:00
linux	hw_breakpoint: fix single-stepping when using bpf_overflow_handler	2023-09-23 11:11:00 +02:00
math-emu	…
media	media: cec: core: add adap_unconfigured() callback	2023-09-13 09:42:54 +02:00
memory	…
misc	…
net	tcp: Fix bind() regression for v4-mapped-v6 wildcard address.	2023-09-19 12:28:10 +02:00
pcmcia	…
ras	…
rdma	…
rv	…
scsi	scsi: core: Use 32-bit hostnum in scsi_host_lookup()	2023-09-13 09:42:56 +02:00
soc	…
sound	…
target	…
trace	ipv6: Remove in6addr_any alternatives.	2023-09-19 12:28:10 +02:00
uapi	dma-buf/sync_file: Fix docs syntax	2023-09-13 09:42:53 +02:00
ufs	…
vdso	…
video	…
xen	…