Steven Price 5d59aa8f9c initramfs: don't free a non-existent initrd ...

Since commit 54c7a8916a ("initramfs: free initrd memory if opening
/initrd.image fails"), the kernel has unconditionally attempted to free
the initrd even if it doesn't exist.

In the non-existent case this causes a boot-time splat if
CONFIG_DEBUG_VIRTUAL is enabled due to a call to virt_to_phys() with a
NULL address.

Instead we should check that the initrd actually exists and only attempt
to free it if it does.

Link: http://lkml.kernel.org/r/[email protected]
Fixes: 54c7a8916a ("initramfs: free initrd memory if opening /initrd.image fails")
Signed-off-by: Steven Price <[email protected]>
Reported-by: Mark Rutland <[email protected]>
Tested-by: Mark Rutland <[email protected]>
Reviewed-by: Mike Rapoport <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

2019-05-18 15:52:26 -07:00

..

calibrate.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

do_mounts_initrd.c

Merge branch 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2019-01-05 13:25:58 -08:00

do_mounts_md.c

init/: remove ineffective sparse disabling

2018-08-22 10:52:49 -07:00

do_mounts_rd.c

init/: remove ineffective sparse disabling

2018-08-22 10:52:49 -07:00

do_mounts.c

vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled

2018-12-20 16:32:56 +00:00

do_mounts.h

fs: add do_mknodat() helper and ksys_mknod() wrapper; remove in-kernel calls to syscall

2018-04-02 20:15:56 +02:00

init_task.c

Merge tag 'audit-pr-20190305' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

2019-03-07 12:20:11 -08:00

initramfs.c

initramfs: don't free a non-existent initrd

2019-05-18 15:52:26 -07:00

Kconfig

mm: shuffle initial free memory to improve memory-side-cache utilization

2019-05-14 19:52:48 -07:00

main.c

init: free_initmem: poison freed init memory

2019-05-14 09:47:47 -07:00

Makefile

Construct init thread stack in the linker script rather than by union

2018-01-09 23:21:02 +00:00

noinitramfs.c

fs: add do_mknodat() helper and ksys_mknod() wrapper; remove in-kernel calls to syscall

2018-04-02 20:15:56 +02:00

version.c

kbuild: Add build salt to the kernel and modules

2018-07-18 01:18:05 +09:00