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dbdf2a7feb
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Miguel Ojeda dbdf2a7feb objtool/rust: add one more noreturn Rust function 
Between Rust 1.79 and 1.86, under `CONFIG_RUST_KERNEL_DOCTESTS=y`,
`objtool` may report:

    rust/doctests_kernel_generated.o: warning: objtool:
    rust_doctest_kernel_alloc_kbox_rs_13() falls through to next
    function rust_doctest_kernel_alloc_kvec_rs_0()

(as well as in rust_doctest_kernel_alloc_kvec_rs_0) due to calls to the
`noreturn` symbol:

    core::option::expect_failed

from code added in commits 779db37373 ("rust: alloc: kvec: implement
AsPageIter for VVec") and 671618432f ("rust: alloc: kbox: implement
AsPageIter for VBox").

Thus add the mangled one to the list so that `objtool` knows it is
actually `noreturn`.

This can be reproduced as well in other versions by tweaking the code,
such as the latest stable Rust (1.90.0).

Stable does not have code that triggers this, but it could have it in
the future. Downstream forks could too. Thus tag it for backport.

See commit 56d680dd23 ("objtool/rust: list `noreturn` Rust functions")
for more details.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Cc: stable@vger.kernel.org # Needed in 6.12.y and later.
Link: https://patch.msgid.link/20251020020714.2511718-1-ojeda@kernel.org
2025-10-22 15:21:54 +02:00
..
accounting tools/delaytop: improve error handling for missing PSI support 2025-09-13 17:32:56 -07:00
arch - Simplify inline asm flag output operands now that the minimum compiler 2025-10-11 10:51:14 -07:00
bootconfig bootconfig: Fix negative seeks on 32-bit with LFS enabled 2025-08-21 08:16:31 +09:00
bpf bpftool: Remove duplicate string.h header 2025-09-27 04:23:15 -07:00
build perf build: Correct CROSS_ARCH for clang 2025-10-06 16:49:25 -03:00
certs
cgroup
counter
crypto
debugging
docs docs: add tools/docs/gen-redirects.py 2025-09-09 13:37:16 -06:00
firewire
firmware
gpio tools: gpio: remove the include directory on make clean 2025-09-04 16:29:28 +02:00
hv
iio iio: add power and energy measurement modifiers 2025-09-13 13:47:19 +01:00
include - Remove a bunch of asm implementing condition flags testing in KVM's 2025-10-11 11:19:16 -07:00
kvm/kvm_stat
laptop
leds
lib bpf-fixes 2025-10-11 10:31:38 -07:00
memory-model
mm tools/mm/slabinfo: fix access to null terminator in string boundary 2025-09-21 14:22:00 -07:00
net NFSD 6.18 Release Notes 2025-10-06 13:22:21 -07:00
objtool objtool/rust: add one more noreturn Rust function 2025-10-22 15:21:54 +02:00
pcmcia
perf - Simplify inline asm flag output operands now that the minimum compiler 2025-10-11 10:51:14 -07:00
power Kbuild updates for 6.18 2025-10-01 20:58:51 -07:00
rcu
sched
sched_ext tools/sched_ext: scx_qmap: Make debug output quieter by default 2025-09-23 09:03:26 -10:00
scripts tools headers: Sync syscall tables with the kernel source 2025-08-18 13:49:25 -07:00
sound
spi
testing hid-for-linus-2025101701 2025-10-18 08:18:18 -10:00
thermal
time
tracing rtla: Updates for v6.18 2025-10-05 09:38:26 -07:00
usb tools/usb/usbip: fix spelling mistakes in usbipd.c 2025-09-06 15:22:14 +02:00
verification
virtio kmsan: convert kmsan_handle_dma to use physical addresses 2025-09-12 00:18:20 +02:00
wmi
workqueue
writeback
Makefile