# git rev-parse -q --verify fc36def997cfd6cbff3eda4f82853a5c311c5466^{commit} fc36def997cfd6cbff3eda4f82853a5c311c5466 already have revision, skipping fetch # git checkout -q -f -B kisskb fc36def997cfd6cbff3eda4f82853a5c311c5466 # git clean -qxdf # < git log -1 # commit fc36def997cfd6cbff3eda4f82853a5c311c5466 # Author: Pavel Tatashin # Date: Tue Jul 3 17:02:53 2018 -0700 # # mm: teach dump_page() to correctly output poisoned struct pages # # If struct page is poisoned, and uninitialized access is detected via # PF_POISONED_CHECK(page) dump_page() is called to output the page. But, # the dump_page() itself accesses struct page to determine how to print # it, and therefore gets into a recursive loop. # # For example: # # dump_page() # __dump_page() # PageSlab(page) # PF_POISONED_CHECK(page) # VM_BUG_ON_PGFLAGS(PagePoisoned(page), page) # dump_page() recursion loop. # # Link: http://lkml.kernel.org/r/20180702180536.2552-1-pasha.tatashin@oracle.com # Fixes: f165b378bbdf ("mm: uninitialized struct page poisoning sanity checking") # Signed-off-by: Pavel Tatashin # Acked-by: Michal Hocko # Cc: # Signed-off-by: Andrew Morton # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 fc36def997cfd6cbff3eda4f82853a5c311c5466 # < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc64e_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc64e_defconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/linus_ppc64e_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec': /kisskb/src/net/bridge/br_netlink.c:637:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here /kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2046:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1835:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1745:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here WARNING: vmlinux.o (.PPC.EMB.apuinfo): unexpected non-allocatable section. Did you forget to use "ax"/"aw" in a .S file? Note that for example contains section definitions for use in .S files. INFO: Uncompressed kernel (size 0xd94ff0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xe00000) Image Name: Linux-4.18.0-rc3-gfc36def Created: Wed Jul 4 12:24:05 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5810854 Bytes = 5674.66 kB = 5.54 MB Load Address: 00000000 Entry Point: 00000000 Completed OK # rm -rf /kisskb/build/linus_ppc64e_defconfig_powerpc # Build took: 0:02:47.756959