diff options
| author | Baoquan He <bhe@redhat.com> | 2021-11-16 06:31:01 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-11-18 19:50:07 +0300 |
| commit | 4aa9340584e37debef06fa99b56d064beb723891 (patch) | |
| tree | c4fcd2a46fd4b146c0cf40764bc6559eaff589d4 /arch/s390/include | |
| parent | 20c76e242e7025bd355619ba67beb243ba1a1e95 (diff) | |
| download | linux-4aa9340584e37debef06fa99b56d064beb723891.tar.xz | |
s390/kexec: fix memory leak of ipl report buffer
unreferenced object 0x38000195000 (size 4096):
comm "kexec", pid 8548, jiffies 4294953647 (age 32443.270s)
hex dump (first 32 bytes):
00 00 00 c8 20 00 00 00 00 00 00 c0 02 80 00 00 .... ...........
40 40 40 40 40 40 40 40 00 00 00 00 00 00 00 00 @@@@@@@@........
backtrace:
[<0000000011a2f199>] __vmalloc_node_range+0xc0/0x140
[<0000000081fa2752>] vzalloc+0x5a/0x70
[<0000000063a4c92d>] ipl_report_finish+0x2c/0x180
[<00000000553304da>] kexec_file_add_ipl_report+0xf4/0x150
[<00000000862d033f>] kexec_file_add_components+0x124/0x160
[<000000000d2717bb>] arch_kexec_kernel_image_load+0x62/0x90
[<000000002e0373b6>] kimage_file_alloc_init+0x1aa/0x2e0
[<0000000060f2d14f>] __do_sys_kexec_file_load+0x17c/0x2c0
[<000000008c86fe5a>] __s390x_sys_kexec_file_load+0x40/0x50
[<000000001fdb9dac>] __do_syscall+0x1bc/0x1f0
[<000000003ee4258d>] system_call+0x78/0xa0
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Fixes: 99feaa717e55 ("s390/kexec_file: Create ipl report and pass to next kernel")
Cc: <stable@vger.kernel.org> # v5.2: 20c76e242e70: s390/kexec: fix return code handling
Cc: <stable@vger.kernel.org> # v5.2
Link: https://lore.kernel.org/r/20211116033101.GD21646@MiWiFi-R3L-srv
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/kexec.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h index ea398a05f643..7f3c9ac34bd8 100644 --- a/arch/s390/include/asm/kexec.h +++ b/arch/s390/include/asm/kexec.h @@ -74,6 +74,12 @@ void *kexec_file_add_components(struct kimage *image, int arch_kexec_do_relocs(int r_type, void *loc, unsigned long val, unsigned long addr); +#define ARCH_HAS_KIMAGE_ARCH + +struct kimage_arch { + void *ipl_buf; +}; + extern const struct kexec_file_ops s390_kexec_image_ops; extern const struct kexec_file_ops s390_kexec_elf_ops; |