Messages in this thread | | | Date | Thu, 17 Aug 2023 14:29:03 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [BUG] missing return thunk: __ret+0x5/0x7e-__ret+0x0/0x7e: e9 f6 ff ff ff |
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On Thu, Aug 17, 2023 at 11:49:52PM +0300, Nikolay Borisov wrote: > > > On 16.08.23 г. 20:54 ч., Paul E. McKenney wrote: > > Hello! > > > > I hit the splat at the end of this message in recent mainline, and has > > appeared some time since v6.5-rc1. Should I be worried? > > > > Reproducer on a two-socket hyperthreaded 20-core-per-socket x86 system: > > > > tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5m --torture refscale --kcsan --kconfig "CONFIG_NR_CPUS=40" --kmake-args "CC=clang" --bootargs "refscale.scale_type=typesafe_seqlock refscale.nreaders=40 refscale.loops=10000 refscale.holdoff=20 torture.disable_onoff_at_boot refscale.verbose_batched=5 torture.verbose_sleep_frequency=8 torture.verbose_sleep_duration=5" > > > > This is from overnight testing that hit this only in the KCSAN runs. > > The KASAN and non-debug runs had no trouble. > > > > This commit added the warning long ago: > > > > 65cdf0d623be ("x86/alternative: Report missing return thunk details") > > > > Thoughts? > > > > Thanx, Paul > > Likely fixed by the following commit in tip/urgen : > 4ae68b26c3ab5a82aa271e6e9fc9b1a06e1d6b40 [tip: x86/urgent] objtool/x86: Fix > SRSO mess
Thank you! Given the "urgent", I am guessing that this is going upstream soon?
Thanx, Paul
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