# git rev-parse -q --verify 7ed2632ec7d72e926b9e8bcc9ad1bb0cd37274bf^{commit}
7ed2632ec7d72e926b9e8bcc9ad1bb0cd37274bf
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7ed2632ec7d72e926b9e8bcc9ad1bb0cd37274bf
# git clean -qxdf
# < git log -1
# commit 7ed2632ec7d72e926b9e8bcc9ad1bb0cd37274bf
# Author: Fedor Pchelkin <pchelkin@ispras.ru>
# Date:   Sun Jan 14 00:33:45 2024 +0300
# 
#     drm/ttm: fix ttm pool initialization for no-dma-device drivers
#     
#     The QXL driver doesn't use any device for DMA mappings or allocations so
#     dev_to_node() will panic inside ttm_device_init() on NUMA systems:
#     
#       general protection fault, probably for non-canonical address 0xdffffc000000007a: 0000 [#1] PREEMPT SMP KASAN NOPTI
#       KASAN: null-ptr-deref in range [0x00000000000003d0-0x00000000000003d7]
#       CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.7.0+ #9
#       Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014
#       RIP: 0010:ttm_device_init+0x10e/0x340
#       Call Trace:
#         qxl_ttm_init+0xaa/0x310
#         qxl_device_init+0x1071/0x2000
#         qxl_pci_probe+0x167/0x3f0
#         local_pci_probe+0xe1/0x1b0
#         pci_device_probe+0x29d/0x790
#         really_probe+0x251/0x910
#         __driver_probe_device+0x1ea/0x390
#         driver_probe_device+0x4e/0x2e0
#         __driver_attach+0x1e3/0x600
#         bus_for_each_dev+0x12d/0x1c0
#         bus_add_driver+0x25a/0x590
#         driver_register+0x15c/0x4b0
#         qxl_pci_driver_init+0x67/0x80
#         do_one_initcall+0xf5/0x5d0
#         kernel_init_freeable+0x637/0xb10
#         kernel_init+0x1c/0x2e0
#         ret_from_fork+0x48/0x80
#         ret_from_fork_asm+0x1b/0x30
#       RIP: 0010:ttm_device_init+0x10e/0x340
#     
#     Fall back to NUMA_NO_NODE if there is no device for DMA.
#     
#     Found by Linux Verification Center (linuxtesting.org).
#     
#     Fixes: b0a7ce53d494 ("drm/ttm: Schedule delayed_delete worker closer")
#     Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
#     Reviewed-by: Christian König <christian.koenig@amd.com>
#     Reported-by: Steven Rostedt <rostedt@goodmis.org>
#     Cc: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
#     Cc: Felix Kuehling <Felix.Kuehling@amd.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 7ed2632ec7d72e926b9e8bcc9ad1bb0cd37274bf
# make -s -j 40 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# < make -s -j 40 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 40 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 40 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-  
Completed OK
# rm -rf /kisskb/build/linus_x86_64_defconfig_x86_64-gcc8
# Build took: 0:01:33.140560