Hi Atish,
On Tue, Jan 25, 2022 at 9:17 PM Atish Patra <atishp@xxxxxxxxxxxxxx> wrote:
On Tue, Jan 25, 2022 at 12:12 PM Geert UytterhoevenSometimes they happen during startup (lots of failures from systemd),
<geert@xxxxxxxxxxxxxx> wrote:
On Thu, Jan 20, 2022 at 10:12 AM Atish Patra <atishp@xxxxxxxxxxxx> wrote:I have never seen one before during my testing. How frequently do you see them?
Currently, SBI APIs accept a hartmask that is generated from structThanks for your patch, which is now commit 26fb751ca37846c9 ("RISC-V:
cpumask. Cpumask data structure can hold upto NR_CPUs value. Thus, it
is not the correct data structure for hartids as it can be higher
than NR_CPUs for platforms with sparse or discontguous hartids.
Remove all association between hartid mask and struct cpumask.
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx> (For Linux RISC-V changes)
Acked-by: Anup Patel <anup@xxxxxxxxxxxxxx> (For KVM RISC-V changes)
Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx>
Do not use cpumask data structure for hartid bitmap") in v5.17-rc1.
I am having an issue with random userspace SEGVs on Starlight Beta
(which needs out-of-tree patches). It doesn't always manifest
itself immediately, so it took a while to bisect, but I suspect the
above commit to be the culprit.
Does it happen while running anything or just idle user space results
in SEGVs randomly.
sometimes they happen later, during interactive work.
Sometimes while idle, and something runs in the background (e.g. mandb).
Do you have a trace that I can look into ?# apt update
[ 807.499050] apt[258]: unhandled signal 11 code 0x1 at
0xffffff8300060020 in libapt-pkg.so.6.0.0[3fa49ac000+174000]
[ 807.509548] CPU: 0 PID: 258 Comm: apt Not tainted
5.16.0-starlight-11192-g26fb751ca378-dirty #153
[ 807.518674] Hardware name: BeagleV Starlight Beta (DT)
[ 807.524077] epc : 0000003fa4a47a0a ra : 0000003fa4a479fc sp :
0000003fcb4b39b0
[ 807.531383] gp : 0000002adcef4800 tp : 0000003fa43287b0 t0 :
0000000000000001
[ 807.538603] t1 : 0000000000000009 t2 : 00000000000003ff s0 :
0000000000000000
[ 807.545887] s1 : 0000002adcf3cb60 a0 : 0000000000000003 a1 :
0000000000000000
[ 807.553167] a2 : 0000003fcb4b3a30 a3 : 0000000000000000 a4 :
0000002adcf3cc1c
[ 807.560390] a5 : 0007000300060000 a6 : 0000000000000003 a7 :
1999999999999999
[ 807.567654] s2 : 0000003fcb4b3a28 s3 : 0000000000000002 s4 :
0000003fcb4b3a30
[ 807.575039] s5 : 0000003fa4baa810 s6 : 0000000000000010 s7 :
0000002adcf19a40
[ 807.582363] s8 : 0000003fcb4b4010 s9 : 0000003fa4baa810 s10:
0000003fcb4b3e90
[ 807.589606] s11: 0000003fa4b2a528 t3 : 0000000000000000 t4 :
0000003fa47906a0
[ 807.596891] t5 : 0000000000000005 t6 : ffffffffffffffff
[ 807.602302] status: 0000000200004020 badaddr: ffffff8300060020
cause: 000000000000000d
(-dirty due to Starlight DTS and driver updates)
Gr{oetje,eeting}s,
Geert
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