Buildresult: powerpc-fixes/ppc44x_defconfig/powerpc-gcc4.9 built on Mar 28 2021, 01:00

kisskb

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Status:	OK
Date/Time:	Mar 28 2021, 01:00
Duration:	0:01:14.260838
Builder:	blade4b
Revision:	powerpc/mm/book3s64: Use the correct storage key value when calling H_PROTECT (`53f1d31708f6240e4615b0927df31f182e389e2f)`
Target:	powerpc-fixes/ppc44x_defconfig/powerpc-gcc4.9
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.9 (powerpc64-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	ppc44x_defconfig (download)
Log:	Download original Possible warnings (2) block/genhd.c:1313:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=] lib/zstd/compress.c:1393:1: warning: the frame size of 1584 bytes is larger than 1024 bytes [-Wframe-larger-than=] Full Log # git rev-parse -q --verify 53f1d31708f6240e4615b0927df31f182e389e2f^{commit} 53f1d31708f6240e4615b0927df31f182e389e2f already have revision, skipping fetch # git checkout -q -f -B kisskb 53f1d31708f6240e4615b0927df31f182e389e2f # git clean -qxdf # < git log -1 # commit 53f1d31708f6240e4615b0927df31f182e389e2f # Author: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> # Date: Fri Mar 26 12:37:55 2021 +0530 # # powerpc/mm/book3s64: Use the correct storage key value when calling H_PROTECT # # H_PROTECT expects the flag value to include flags: # AVPN, pp0, pp1, pp2, key0-key4, Noexec, CMO Option flags # # This patch updates hpte_updatepp() to fetch the storage key value from # the linux page table and use the same in H_PROTECT hcall. # # native_hpte_updatepp() is not updated because the kernel doesn't clear # the existing storage key value there. The kernel also doesn't use # hpte_updatepp() callback for updating storage keys. # # This fixes the below kernel crash observed with KUAP enabled. # # BUG: Unable to handle kernel data access on write at 0xc009fffffc440000 # Faulting instruction address: 0xc0000000000b7030 # Key fault AMR: 0xfcffffffffffffff IAMR: 0xc0000077bc498100 # Found HPTE: v = 0x40070adbb6fffc05 r = 0x1ffffffffff1194 # Oops: Kernel access of bad area, sig: 11 [#1] # LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries # ... # CFAR: c000000000010100 DAR: c009fffffc440000 DSISR: 02200000 IRQMASK: 0 # ... # NIP memset+0x68/0x104 # LR pcpu_alloc+0x54c/0xb50 # Call Trace: # pcpu_alloc+0x55c/0xb50 (unreliable) # blk_stat_alloc_callback+0x94/0x150 # blk_mq_init_allocated_queue+0x64/0x560 # blk_mq_init_queue+0x54/0xb0 # scsi_mq_alloc_queue+0x30/0xa0 # scsi_alloc_sdev+0x1cc/0x300 # scsi_probe_and_add_lun+0xb50/0x1020 # __scsi_scan_target+0x17c/0x790 # scsi_scan_channel+0x90/0xe0 # scsi_scan_host_selected+0x148/0x1f0 # do_scan_async+0x2c/0x2a0 # async_run_entry_fn+0x78/0x220 # process_one_work+0x264/0x540 # worker_thread+0xa8/0x600 # kthread+0x190/0x1a0 # ret_from_kernel_thread+0x5c/0x6c # # With KUAP enabled the kernel uses storage key 3 for all its # translations. But as shown by the debug print, in this specific case we # have the hash page table entry created with key value 0. # # Found HPTE: v = 0x40070adbb6fffc05 r = 0x1ffffffffff1194 # # and DSISR indicates a key fault. # # This can happen due to parallel fault on the same EA by different CPUs: # # CPU 0 CPU 1 # fault on X # # H_PAGE_BUSY set # fault on X # # finish fault handling and # clear H_PAGE_BUSY # check for H_PAGE_BUSY # continue with fault handling. # # This implies CPU1 will end up calling hpte_updatepp for address X and # the kernel updated the hash pte entry with key 0 # # Fixes: d94b827e89dc ("powerpc/book3s64/kuap: Use Key 3 for kernel mapping with hash translation") # Reported-by: Murilo Opsfelder Araujo <muriloo@linux.ibm.com> # Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> # Debugged-by: Michael Ellerman <mpe@ellerman.id.au> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20210326070755.304625-1-aneesh.kumar@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 53f1d31708f6240e4615b0927df31f182e389e2f # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc44x_defconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1313:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ /kisskb/src/lib/zstd/compress.c: In function 'ZSTD_compressBlock_doubleFast': /kisskb/src/lib/zstd/compress.c:1393:1: warning: the frame size of 1584 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x6139c8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3117285 Bytes = 3044.22 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 00701498 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3116530 Bytes = 3043.49 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007014a8 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3117236 Bytes = 3044.18 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007001b8 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3117193 Bytes = 3044.13 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007014a8 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3117323 Bytes = 3044.26 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007014b8 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3117351 Bytes = 3044.29 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007014a8 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3116522 Bytes = 3043.48 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007014a0 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3116556 Bytes = 3043.51 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 00701488 Image Name: Linux-5.12.0-rc2-g53f1d31708f6 Created: Sun Mar 28 01:01:46 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3116443 Bytes = 3043.40 KiB = 2.97 MiB Load Address: 00700000 Entry Point: 007000c4 Completed OK # rm -rf /kisskb/build/powerpc-fixes_ppc44x_defconfig_powerpc-gcc4.9 # Build took: 0:01:14.260838

© Michael Ellerman 2006-2018.