kernel/linux.git, branch v5.10.80

Linux 5.10.80

2021-11-18T13:04:33+00:00

Link: https://lore.kernel.org/r/20211115165343.579890274@linuxfoundation.org Tested-by: Fox Chen Tested-by: Pavel Machek (CIP) Tested-by: Shuah Khan Tested-by: Hulk Robot Tested-by: Salvatore Bonaccorso Tested-by: Jon Hunter Tested-by: Linux Kernel Functional Testing Tested-by: Sudip Mukherjee Link: https://lore.kernel.org/r/20211116142545.607076484@linuxfoundation.org Tested-by: Shuah Khan Tested-by: Fox Chen Tested-by: Florian Fainelli Tested-by: Jon Hunter Tested-by: Linux Kernel Functional Testing Link: https://lore.kernel.org/r/20211117101457.890809587@linuxfoundation.org Tested-by: Fox Chen Link: https://lore.kernel.org/r/20211117144602.341592498@linuxfoundation.org Tested-by: Jon Hunter Tested-by: Fox Chen Tested-by: Florian Fainelli Tested-by: Guenter Roeck Tested-by: Pavel Machek (CIP) Tested-by: Linux Kernel Functional Testing Tested-by: Sudip Mukherjee Signed-off-by: Greg Kroah-Hartman

soc/tegra: pmc: Fix imbalanced clock disabling in error code path

2021-11-18T13:04:33+00:00

commit 19221e3083020bd9537624caa0ee0145ed92ba36 upstream. The tegra_powergate_power_up() has a typo in the error code path where it will try to disable clocks twice, fix it. In practice that error never happens, so this is a minor correction. Tested-by: Peter Geis # Ouya T30 Tested-by: Nicolas Chauvet # PAZ00 T20 and TK1 T124 Tested-by: Matt Merhar # Ouya T30 Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding Cc: Guenter Roeck Cc: Anders Roxell Signed-off-by: Greg Kroah-Hartman

x86/sev: Make the #VC exception stacks part of the default stacks storage

2021-11-18T13:04:32+00:00

commit 541ac97186d9ea88491961a46284de3603c914fd upstream. The size of the exception stacks was increased by the commit in Fixes, resulting in stack sizes greater than a page in size. The #VC exception handling was only mapping the first (bottom) page, resulting in an SEV-ES guest failing to boot. Make the #VC exception stacks part of the default exception stacks storage and allocate them with a CONFIG_AMD_MEM_ENCRYPT=y .config. Map them only when a SEV-ES guest has been detected. Rip out the custom VC stacks mapping and storage code. [ bp: Steal and adapt Tom's commit message. ] Fixes: 7fae4c24a2b8 ("x86: Increase exception stack sizes") Signed-off-by: Borislav Petkov Tested-by: Tom Lendacky Tested-by: Brijesh Singh Link: https://lkml.kernel.org/r/YVt1IMjIs7pIZTRR@zn.tnic Signed-off-by: Greg Kroah-Hartman

x86/sev: Add an x86 version of cc_platform_has()

2021-11-18T13:04:32+00:00

commit aa5a461171f98fde0df78c4f6b5018a1e967cf81 upstream. Introduce an x86 version of the cc_platform_has() function. This will be used to replace vendor specific calls like sme_active(), sev_active(), etc. Signed-off-by: Tom Lendacky Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20210928191009.32551-4-bp@alien8.de Signed-off-by: Greg Kroah-Hartman

arch/cc: Introduce a function to check for confidential computing features

2021-11-18T13:04:32+00:00

commit 46b49b12f3fc5e1347dba37d4639e2165f447871 upstream. In preparation for other confidential computing technologies, introduce a generic helper function, cc_platform_has(), that can be used to check for specific active confidential computing attributes, like memory encryption. This is intended to eliminate having to add multiple technology-specific checks to the code (e.g. if (sev_active() || tdx_active() || ... ). [ bp: s/_CC_PLATFORM_H/_LINUX_CC_PLATFORM_H/g ] Co-developed-by: Andi Kleen Signed-off-by: Andi Kleen Co-developed-by: Kuppuswamy Sathyanarayanan Signed-off-by: Kuppuswamy Sathyanarayanan Signed-off-by: Tom Lendacky Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20210928191009.32551-3-bp@alien8.de Signed-off-by: Greg Kroah-Hartman

selftests/bpf: Fix also no-alu32 strobemeta selftest

2021-11-18T13:04:32+00:00

commit a20eac0af02810669e187cb623bc904908c423af upstream. Previous fix aded bpf_clamp_umax() helper use to re-validate boundaries. While that works correctly, it introduces more branches, which blows up past 1 million instructions in no-alu32 variant of strobemeta selftests. Switching len variable from u32 to u64 also fixes the issue and reduces the number of validated instructions, so use that instead. Fix this patch and bpf_clamp_umax() removed, both alu32 and no-alu32 selftests pass. Fixes: 0133c20480b1 ("selftests/bpf: Fix strobemeta selftest regression") Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20211101230118.1273019-1-andrii@kernel.org Signed-off-by: Greg Kroah-Hartman

mmc: moxart: Fix null pointer dereference on pointer host

2021-11-18T13:04:32+00:00

commit 0eab756f8821d255016c63bb55804c429ff4bdb1 upstream. There are several error return paths that dereference the null pointer host because the pointer has not yet been set to a valid value. Fix this by adding a new out_mmc label and exiting via this label to avoid the host clean up and hence the null pointer dereference. Addresses-Coverity: ("Explicit null dereference") Fixes: 8105c2abbf36 ("mmc: moxart: Fix reference count leaks in moxart_probe") Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20211013100052.125461-1-colin.king@canonical.com Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman

ath10k: fix invalid dma_addr_t token assignment

2021-11-18T13:04:32+00:00

commit 937e79c67740d1d84736730d679f3cb2552f990e upstream. Using a kernel pointer in place of a dma_addr_t token can lead to undefined behavior if that makes it into cache management functions. The compiler caught one such attempt in a cast: drivers/net/wireless/ath/ath10k/mac.c: In function 'ath10k_add_interface': drivers/net/wireless/ath/ath10k/mac.c:5586:47: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] 5586 | arvif->beacon_paddr = (dma_addr_t)arvif->beacon_buf; | ^ Looking through how this gets used down the way, I'm fairly sure that beacon_paddr is never accessed again for ATH10K_DEV_TYPE_HL devices, and if it was accessed, that would be a bug. Change the assignment to use a known-invalid address token instead, which avoids the warning and makes it easier to catch bugs if it does end up getting used. Fixes: e263bdab9c0e ("ath10k: high latency fixes for beacon buffer") Signed-off-by: Arnd Bergmann Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20211014075153.3655910-1-arnd@kernel.org Signed-off-by: Greg Kroah-Hartman

SUNRPC: Partial revert of commit 6f9f17287e78

2021-11-18T13:04:32+00:00

commit ea7a1019d8baf8503ecd6e3ec8436dec283569e6 upstream. The premise of commit 6f9f17287e78 ("SUNRPC: Mitigate cond_resched() in xprt_transmit()") was that cond_resched() is expensive and unnecessary when there has been just a single send. The point of cond_resched() is to ensure that tasks that should pre-empt this one get a chance to do so when it is safe to do so. The code prior to commit 6f9f17287e78 failed to take into account that it was keeping a rpc_task pinned for longer than it needed to, and so rather than doing a full revert, let's just move the cond_resched. Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman

PCI: aardvark: Fix PCIe Max Payload Size setting

2021-11-18T13:04:32+00:00

commit a4e17d65dafdd3513042d8f00404c9b6068a825c upstream. Change PCIe Max Payload Size setting in PCIe Device Control register to 512 bytes to align with PCIe Link Initialization sequence as defined in Marvell Armada 3700 Functional Specification. According to the specification, maximal Max Payload Size supported by this device is 512 bytes. Without this kernel prints suspicious line: pci 0000:01:00.0: Upstream bridge's Max Payload Size set to 256 (was 16384, max 512) With this change it changes to: pci 0000:01:00.0: Upstream bridge's Max Payload Size set to 256 (was 512, max 512) Link: https://lore.kernel.org/r/20211005180952.6812-3-kabel@kernel.org Fixes: 8c39d710363c ("PCI: aardvark: Add Aardvark PCI host controller driver") Signed-off-by: Pali Rohár Signed-off-by: Marek Behún Signed-off-by: Lorenzo Pieralisi Reviewed-by: Marek Behún Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman