From: Nathan Chancellor <nathan@kernel.org>
To: Konrad Dybcio <konrad.dybcio@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
corbet@lwn.net, will@kernel.org, boqun.feng@gmail.com,
mark.rutland@arm.com, catalin.marinas@arm.com, dennis@kernel.org,
tj@kernel.org, cl@linux.com, hca@linux.ibm.com,
gor@linux.ibm.com, agordeev@linux.ibm.com,
borntraeger@linux.ibm.com, svens@linux.ibm.com,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
joro@8bytes.org, suravee.suthikulpanit@amd.com,
robin.murphy@arm.com, dwmw2@infradead.org,
baolu.lu@linux.intel.com, Arnd Bergmann <arnd@arndb.de>,
Herbert Xu <herbert@gondor.apana.org.au>,
davem@davemloft.net, penberg@kernel.org, rientjes@google.com,
iamjoonsoo.kim@lge.com, Andrew Morton <akpm@linux-foundation.org>,
vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-s390@vger.kernel.org,
iommu@lists.linux.dev, linux-arch@vger.kernel.org,
linux-crypto@vger.kernel.org, sfr@canb.auug.org.au,
mpe@ellerman.id.au, James.Bottomley@hansenpartnership.com,
deller@gmx.de, linux-parisc@vger.kernel.org,
llvm@lists.linux.dev
Subject: Re: [PATCH v2 5/12] percpu: Add {raw,this}_cpu_try_cmpxchg()
Date: Fri, 9 Jun 2023 09:13:40 -0700 [thread overview]
Message-ID: <20230609161340.GA4019185@dev-arch.thelio-3990X> (raw)
In-Reply-To: <f320f021-88c4-c5c9-0781-c82d0b88f67d@linaro.org>
Hi Konrad,
On Fri, Jun 09, 2023 at 06:10:38PM +0200, Konrad Dybcio wrote:
>
>
> On 31.05.2023 15:08, Peter Zijlstra wrote:
> > Add the try_cmpxchg() form to the per-cpu ops.
> >
> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> > ---
> +CC Nathan, llvm list
>
> Hi all, this patch seems to break booting on Qualcomm ARM64 platforms
> when compiled with clang (GCC works fine) for some reason..:
>
> next-20230605 - works
> next-20230606 - doesn't
>
> grev -m 1 dc4e51fd9846 on next-20230606 - works again
> b4 shazam <this_msgid> -P 1-4 - still works
> b4 shazam <this_msgid> -P 5 - breaks
>
> Confirmed on at least Qualcomm QCM2290, SM8250.
>
> Checking the serial console, it hits a BUG_ON:
>
> [ 0.000000] ------------[ cut here ]------------
> [ 0.000000] kernel BUG at mm/vmalloc.c:1638!
> [ 0.000000] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP
> [ 0.000000] Modules linked in:
> [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted [snip]
> [ 0.000000] Hardware name: Qualcomm Technologies, Inc. Robotics RB1 (DT)
> [ 0.000000] pstate: 000000c5 (nzcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> [ 0.000000] pc : alloc_vmap_area+0xafc/0xb08
> [ 0.000000] lr : alloc_vmap_area+0x9e4/0xb08
> [ 0.000000] sp : ffffa50137f53c20
> [ 0.000000] x29: ffffa50137f53c60 x28: ffffa50137f30c18 x27: 0000000000000000
> [ 0.000000] x26: 0000000000007fff x25: ffff800080000000 x24: 000000000000cfff
> [ 0.000000] x23: ffffffffffff8000 x22: ffffa50137fef970 x21: fffffbfff0000000
> [ 0.000000] x20: ffff022982003208 x19: ffff0229820031f8 x18: ffffa50137f64f70
> [ 0.000000] x17: ffffa50137fef980 x16: ffffa501375e6d08 x15: 0000000000000001
> [ 0.000000] x14: ffffa5013831e1a0 x13: ffffa50137f30c18 x12: 0000000000402dc2
> [ 0.000000] x11: 0000000000000000 x10: ffff022982003018 x9 : ffffa5013831e188
> [ 0.000000] x8 : ffffcb55ff003228 x7 : 0000000000000000 x6 : 0000000000000048
> [ 0.000000] x5 : 0000000000000000 x4 : ffffa50137f53bd0 x3 : ffffa50136490000
> [ 0.000000] x2 : 0000000000000001 x1 : ffffa5013831e190 x0 : ffff022982003208
> [ 0.000000] Call trace:
> [ 0.000000] alloc_vmap_area+0xafc/0xb08
> [ 0.000000] __get_vm_area_node+0x108/0x1e8
> [ 0.000000] __vmalloc_node_range+0x1fc/0x728
> [ 0.000000] __vmalloc_node+0x5c/0x70
> [ 0.000000] init_IRQ+0x90/0x11c
> [ 0.000000] start_kernel+0x1ac/0x3bc
> [ 0.000000] __primary_switched+0xc4/0xcc
> [ 0.000000] Code: f000e300 91062000 943bd9ba 17ffff8f (d4210000)
> [ 0.000000] ---[ end trace 0000000000000000 ]---
> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
>
> Compiled with clang 15.0.7 from Arch repos, with
> make ARCH=arm64 LLVM=1
Thanks a lot for testing with LLVM, submitting this report, and doing a
bisect. I sent a patch to fix this a couple of days ago and Peter pushed
it to -tip today, so it should be in the next -next release:
https://git.kernel.org/tip/093d9b240a1fa261ff8aeb7c7cc484dedacfda53
Cheers,
Nathan
next prev parent reply other threads:[~2023-06-09 16:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 13:08 [PATCH 00/12] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() Peter Zijlstra
2023-05-31 13:08 ` [PATCH 01/12] cyrpto/b128ops: Remove struct u128 Peter Zijlstra
2023-05-31 13:08 ` [PATCH 02/12] types: Introduce [us]128 Peter Zijlstra
2023-05-31 13:08 ` [PATCH 03/12] arch: Introduce arch_{,try_}_cmpxchg128{,_local}() Peter Zijlstra
2023-05-31 13:08 ` [PATCH 04/12] instrumentation: Wire up cmpxchg128() Peter Zijlstra
2023-05-31 13:08 ` [PATCH 05/12] percpu: Add {raw,this}_cpu_try_cmpxchg() Peter Zijlstra
2023-06-09 16:10 ` [PATCH v2 5/12] " Konrad Dybcio
2023-06-09 16:13 ` Nathan Chancellor [this message]
2023-06-09 16:20 ` Konrad Dybcio
2023-05-31 13:08 ` [PATCH 06/12] percpu: Wire up cmpxchg128 Peter Zijlstra
2023-05-31 13:08 ` [PATCH 07/12] percpu: #ifndef __SIZEOF_INT128__ Peter Zijlstra
2023-05-31 14:21 ` Arnd Bergmann
2023-05-31 15:50 ` Peter Zijlstra
2023-06-01 10:14 ` [PATCH v2 07/12] parisc/percpu: Work around the lack of __SIZEOF_INT128__ Peter Zijlstra
2023-06-01 10:32 ` Helge Deller
2023-06-01 10:50 ` Peter Zijlstra
2023-06-01 21:08 ` Sam James
2023-06-01 13:29 ` Linus Torvalds
2023-06-01 17:38 ` Masahiro Yamada
2023-06-02 14:39 ` Peter Zijlstra
2023-06-02 14:50 ` Mark Rutland
2023-06-02 16:09 ` Linus Torvalds
2023-06-02 17:00 ` H. Peter Anvin
2023-06-02 19:10 ` Peter Zijlstra
2023-06-02 19:20 ` H. Peter Anvin
2023-06-02 19:40 ` Peter Zijlstra
2023-06-02 19:57 ` Linus Torvalds
2023-06-02 20:42 ` Helge Deller
2023-05-31 13:08 ` [PATCH 08/12] x86,amd_iommu: Replace cmpxchg_double() Peter Zijlstra
2023-05-31 13:08 ` [PATCH 09/12] x86,intel_iommu: " Peter Zijlstra
2023-05-31 13:08 ` [PATCH 10/12] slub: " Peter Zijlstra
2023-05-31 13:08 ` [PATCH 11/12] arch: Remove cmpxchg_double Peter Zijlstra
2023-05-31 13:08 ` [PATCH 12/12] s390/cpum_sf: Convert to cmpxchg128() Peter Zijlstra
2023-05-31 14:47 ` [PATCH 00/12] Introduce cmpxchg128() -- aka. the demise of cmpxchg_double() Mark Rutland
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