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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-07 10:03:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-07 10:03:24 -0700 |
| commit | eb5699ba31558bdb2cee6ebde3d0a68091e47dce (patch) | |
| tree | 3aeab3158f7ae43431405f3aa4f2e1fa3d103206 /kernel/kexec_file.c | |
| parent | b5a8466d37d30cfcc8015789f4a3f0c44b6c7bc6 (diff) | |
| parent | b99695580bfc1f91364023c673681ddb88e375dc (diff) | |
Merge tag 'mm-nonmm-stable-2022-08-06-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc updates from Andrew Morton:
"Updates to various subsystems which I help look after. lib, ocfs2,
fatfs, autofs, squashfs, procfs, etc. A relatively small amount of
material this time"
* tag 'mm-nonmm-stable-2022-08-06-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits)
scripts/gdb: ensure the absolute path is generated on initial source
MAINTAINERS: kunit: add David Gow as a maintainer of KUnit
mailmap: add linux.dev alias for Brendan Higgins
mailmap: update Kirill's email
profile: setup_profiling_timer() is moslty not implemented
ocfs2: fix a typo in a comment
ocfs2: use the bitmap API to simplify code
ocfs2: remove some useless functions
lib/mpi: fix typo 'the the' in comment
proc: add some (hopefully) insightful comments
bdi: remove enum wb_congested_state
kernel/hung_task: fix address space of proc_dohung_task_timeout_secs
lib/lzo/lzo1x_compress.c: replace ternary operator with min() and min_t()
squashfs: support reading fragments in readahead call
squashfs: implement readahead
squashfs: always build "file direct" version of page actor
Revert "squashfs: provide backing_dev_info in order to disable read-ahead"
fs/ocfs2: Fix spelling typo in comment
ia64: old_rr4 added under CONFIG_HUGETLB_PAGE
proc: fix test for "vsyscall=xonly" boot option
...
Diffstat (limited to 'kernel/kexec_file.c')
| -rw-r--r-- | kernel/kexec_file.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index a7b411c22f19..1d546dc97c50 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -40,6 +40,9 @@ void set_kexec_sig_enforced(void) static int kexec_calculate_store_digests(struct kimage *image); +/* Maximum size in bytes for kernel/initrd files. */ +#define KEXEC_FILE_SIZE_MAX min_t(s64, 4LL << 30, SSIZE_MAX) + /* * Currently this is the only default function that is exported as some * architectures need it to do additional handlings. @@ -190,11 +193,12 @@ kimage_file_prepare_segments(struct kimage *image, int kernel_fd, int initrd_fd, const char __user *cmdline_ptr, unsigned long cmdline_len, unsigned flags) { - int ret; + ssize_t ret; void *ldata; ret = kernel_read_file_from_fd(kernel_fd, 0, &image->kernel_buf, - INT_MAX, NULL, READING_KEXEC_IMAGE); + KEXEC_FILE_SIZE_MAX, NULL, + READING_KEXEC_IMAGE); if (ret < 0) return ret; image->kernel_buf_len = ret; @@ -214,7 +218,7 @@ kimage_file_prepare_segments(struct kimage *image, int kernel_fd, int initrd_fd, /* It is possible that there no initramfs is being loaded */ if (!(flags & KEXEC_FILE_NO_INITRAMFS)) { ret = kernel_read_file_from_fd(initrd_fd, 0, &image->initrd_buf, - INT_MAX, NULL, + KEXEC_FILE_SIZE_MAX, NULL, READING_KEXEC_INITRAMFS); if (ret < 0) goto out; |