https://github.com/torvalds/linux
Revision b972fdba8665d75109ade0357739f46af6415d2a authored by Shiju Jose on 27 August 2020, 14:04:50 UTC, committed by Borislav Petkov on 27 August 2020, 16:04:07 UTC
After b9cae27728d1 ("EDAC/ghes: Scan the system once on driver init") and with CONFIG_DEBUG_TEST_DRIVER_REMOVE enabled, ghes_hw.dimms becomes a NULL pointer after the second ->probe() (aka ghes_edac_register()) which the config option causes to be called. This happens because the static variable which holds down whether the system has been scanned already, doesn't get reset in ghes_edac_unregister(). Then, on the second probe, ghes_scan_system() doesn't get to enumerate the DIMMs, leading to ghes_hw.dimms remaining NULL. Clear the variable and rename it to something more descriptive so that a second probe succeeds. [ bp: Rewrite commit message. ] Fixes: b9cae27728d1 ("EDAC/ghes: Scan the system once on driver init") Suggested-by: Borislav Petkov <bp@suse.de> Signed-off-by: Shiju Jose <shiju.jose@huawei.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20200827140450.1620-1-shiju.jose@huawei.com
1 parent d012a71
Tip revision: b972fdba8665d75109ade0357739f46af6415d2a authored by Shiju Jose on 27 August 2020, 14:04:50 UTC
EDAC/ghes: Fix NULL pointer dereference in ghes_edac_register()
EDAC/ghes: Fix NULL pointer dereference in ghes_edac_register()
Tip revision: b972fdb
File | Mode | Size |
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Documentation | ||
LICENSES | ||
arch | ||
block | ||
certs | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | -rw-r--r-- | 15.8 KB |
.cocciconfig | -rw-r--r-- | 59 bytes |
.get_maintainer.ignore | -rw-r--r-- | 71 bytes |
.gitattributes | -rw-r--r-- | 62 bytes |
.gitignore | -rw-r--r-- | 1.8 KB |
.mailmap | -rw-r--r-- | 16.9 KB |
COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 97.4 KB |
Kbuild | -rw-r--r-- | 1.3 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 555.8 KB |
Makefile | -rw-r--r-- | 61.8 KB |
README | -rw-r--r-- | 727 bytes |
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