diff options
| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 10:43:19 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 07:58:36 -0700 |
| commit | 6668ed271eaefaa63e686bdfbedaeb7b8e492722 (patch) | |
| tree | 58e8288fead484f6755ad0815fc74c3742663761 /arch/alpha/configs/defconfig | |
| download | linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.tar.gz linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.zip | |
selftests/bpf: Reject graph kptr use after RCU unlockgrafted
Add a sleepable verifier test that loads a graph-node local kptr in an
explicit RCU read-side critical section, then passes its node to
bpf_rbtree_remove() after the section ends.
Before the verifier fix, the stale NON_OWN_REF flag makes the node look like
a live borrowed reference and the program is accepted. After the fix, the
pointer is demoted without NON_OWN_REF and the graph kfunc argument is
rejected.
Also exercise a graph kptr loaded while a spin lock provides implicit RCU
protection. The pointer must be invalidated when the lock is released, which
guards the required ordering between non-owning-reference invalidation and
RCU demotion.
Update the existing fault-protected load test state description. The
post-unlock pointer no longer carries NON_OWN_REF, but remains readable
because the load is rewritten to use BPF_PROBE_MEM.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'arch/alpha/configs/defconfig')
| -rw-r--r-- | arch/alpha/configs/defconfig | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/alpha/configs/defconfig b/arch/alpha/configs/defconfig new file mode 100644 index 000000000..29748bbd9 --- /dev/null +++ b/arch/alpha/configs/defconfig @@ -0,0 +1,68 @@ +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_KALLSYMS_ALL=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_VERBOSE_MCHECK=y +CONFIG_SRM_ENV=m +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_XFRM_USER=m +CONFIG_NET_KEY=m +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_INET_AH=m +CONFIG_INET_ESP=m +# CONFIG_IPV6 is not set +CONFIG_NETFILTER=y +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_FILTER=m +CONFIG_VLAN_8021Q=m +CONFIG_PNP=y +CONFIG_ISAPNP=y +CONFIG_BLK_DEV_FD=y +CONFIG_BLK_DEV_LOOP=m +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_BLK_DEV_SR=y +CONFIG_SCSI_AIC7XXX=m +CONFIG_AIC7XXX_CMDS_PER_DEVICE=253 +# CONFIG_AIC7XXX_DEBUG_ENABLE is not set +CONFIG_ATA=y +# CONFIG_SATA_PMP is not set +CONFIG_PATA_ALI=y +CONFIG_PATA_CMD64X=y +CONFIG_PATA_CYPRESS=y +CONFIG_ATA_GENERIC=y +CONFIG_NETDEVICES=y +CONFIG_DUMMY=m +CONFIG_NET_VENDOR_3COM=y +CONFIG_VORTEX=y +CONFIG_NET_TULIP=y +CONFIG_DE2104X=m +CONFIG_TULIP=y +CONFIG_TULIP_MMIO=y +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_CMOS=y +CONFIG_EXT2_FS=y +CONFIG_ISO9660_FS=y +CONFIG_MSDOS_FS=y +CONFIG_VFAT_FS=y +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_NFS_FS=m +CONFIG_NFS_V3=y +CONFIG_NFSD=m +CONFIG_NLS_CODEPAGE_437=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_DEBUG_KERNEL=y +CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y +CONFIG_ALPHA_LEGACY_START_ADDRESS=y +CONFIG_MATHEMU=y +CONFIG_CRYPTO_HMAC=y +CONFIG_DEVTMPFS=y |