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linux/arch/s390/kernel
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Baoquan He 63e2f34abc s390/kexec: fix memory leak of ipl report buffer 
commit 4aa9340584e37debef06fa99b56d064beb723891 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26 10:39:19 +01:00
..
syscalls
mm/madvise: introduce process_madvise() syscall: an external memory hinting API
2020-10-18 09:27:10 -07:00
vdso64
Kbuild updates for v5.10
2020-10-22 13:13:57 -07:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
alternative.c
…
asm-offsets.c
s390: fix fpu restore in entry.S
2020-11-23 11:52:13 +01:00
audit.c
…
audit.h
…
base.S
s390/base: remove unused s390_base_mcck_handler
2019-09-03 13:53:56 +02:00
cache.c
…
compat_audit.c
…
compat_linux.c
s390: use generic UID16 implementation
2019-01-18 09:33:18 +01:00
compat_linux.h
…
compat_ptrace.h
…
compat_signal.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
cpcmd.c
s390/cpcmd: fix inline assembly register clobbering
2021-04-14 08:42:10 +02:00
crash_dump.c
s390/nvme: support firmware-assisted dump to NVMe disks
2020-10-02 14:40:48 +02:00
debug.c
s390/debug: fix debug area life cycle
2021-09-15 09:50:27 +02:00
diag.c
s390/diag: convert to use DEFINE_SEQ_ATTRIBUTE macro
2020-09-17 14:11:03 +02:00
dis.c
s390/disassembler: increase ebpf disasm buffer size
2021-05-11 14:47:11 +02:00
dumpstack.c
kernel: rename show_stack_loglvl() => show_stack()
2020-06-09 09:39:13 -07:00
early_printk.c
s390/sclp: remove unused sclp_early_printk_forced
2020-09-21 08:08:44 +02:00
early.c
s390: make PCI mio support a machine flag
2021-09-18 13:40:22 +02:00
ebcdic.c
s390: ebcdic: convert comments to UTF-8
2018-08-23 18:48:43 -07:00
entry.h
s390 updates for the 5.10 merge window
2020-10-16 12:36:38 -07:00
entry.S
s390/mcck: fix calculation of SIE critical section size
2021-06-23 14:42:51 +02:00
fpu.c
s390: correct some inline assembly constraints
2019-04-17 10:40:57 +02:00
ftrace.c
s390/ftrace: fix ftrace_update_ftrace_func implementation
2021-07-28 14:35:42 +02:00
guarded_storage.c
…
head64.S
s390/head64: correct init_task stack setup
2019-11-30 10:52:45 +01:00
idle.c
sched/idle: Fix arch_cpu_idle() vs tracing
2020-11-24 16:47:35 +01:00
ima_arch.c
s390/kexec_file: Disable kexec_load when IPLed secure
2019-04-29 10:44:03 +02:00
ipl_vmparm.c
s390/ipl: provide uapi header for list directed IPL
2019-04-26 12:34:05 +02:00
ipl.c
s390/kexec: fix return code handling
2021-11-26 10:39:18 +01:00
irq.c
s390/irq: make init_ext_interrupts static
2020-03-11 14:18:44 +01:00
jump_label.c
s390/jump_label: print real address in a case of a jump label bug
2021-09-18 13:40:22 +02:00
kdebugfs.c
s390: no need to check return value of debugfs_create functions
2019-01-28 15:58:55 +01:00
kexec_elf.c
kexec: Fix file verification on S390
2019-09-10 13:27:51 +01:00
kexec_image.c
kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE
2019-08-19 21:54:15 -07:00
kprobes_insn_page.S
s390/kprobes: move insn_page to text segment
2020-10-09 23:45:30 +02:00
kprobes.c
s390 updates for the 5.10 merge window
2020-10-16 12:36:38 -07:00
lgr.c
s390: convert to msecs_to_jiffies()
2020-06-29 16:31:46 +02:00
machine_kexec_file.c
s390/kexec: fix memory leak of ipl report buffer
2021-11-26 10:39:19 +01:00
machine_kexec_reloc.c
s390/kaslr: add support for R_390_JMP_SLOT relocation type
2020-05-20 10:13:27 +02:00
machine_kexec.c
mm: remove unneeded includes of <asm/pgalloc.h>
2020-08-07 11:33:26 -07:00
Makefile
s390/kprobes: move insn_page to text segment
2020-10-09 23:45:30 +02:00
mcount.S
s390/ftrace: fix ftrace_update_ftrace_func implementation
2021-07-28 14:35:42 +02:00
module.c
s390/module: Use s390_kernel_write() for late relocations
2020-05-08 00:12:43 +02:00
nmi.c
s390: remove critical section cleanup from entry.S
2020-05-28 12:21:54 +02:00
nospec-branch.c
s390 updates for the 5.2 merge window
2019-05-06 16:42:54 -07:00
nospec-sysfs.c
s390: Convert IS_ENABLED uses to __is_defined
2019-04-11 13:36:53 +02:00
numa.c
s390/numa: move code to arch/s390/kernel
2020-08-11 18:16:55 +02:00
os_info.c
…
perf_cpum_cf_common.c
s390/cpum_cf: move common functions into a separate file
2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c
s390/cpumf: Adjust registration of s390 PMU device drivers
2019-11-20 17:16:01 +01:00
perf_cpum_cf_events.c
s390/cpum_cf,perf: change DFLT_CCERROR counter name
2020-07-21 13:53:56 +02:00
perf_cpum_cf.c
s390/cpumf: Adjust registration of s390 PMU device drivers
2019-11-20 17:16:01 +01:00
perf_cpum_sf.c
- fix system call exit path; avoid return to user space with
2020-11-17 11:22:03 -08:00
perf_event.c
s390: add error handling to perf_callchain_kernel
2019-10-31 17:20:54 +01:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
pgm_check.S
s390: add 3f program exception handler
2020-09-14 10:08:07 +02:00
process.c
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-08-09 13:33:54 -07:00
processor.c
s390/cpuinfo: do not skip info for CPUs without MHz feature
2020-03-23 13:41:55 +01:00
ptrace.c
s390/ptrace: fix storage key handling
2020-08-17 13:17:14 +02:00
reipl.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
relocate_kernel.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
runtime_instr.c
s390/runtime_instrumentation: fix storage key handling
2020-08-17 13:17:10 +02:00
setup.c
s390/sclp_vt220: fix console name to match device
2021-07-20 16:05:42 +02:00
signal.c
tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume()
2020-10-17 15:04:36 -06:00
smp.c
s390: preempt: Fix preempt_count initialization
2021-07-14 16:56:54 +02:00
stacktrace.c
stacktrace: Remove reliable argument from arch_stack_walk() callback
2020-09-18 14:24:16 +01:00
sthyi.c
s390/sthyi: Fix machine name validity indication
2018-10-15 12:17:00 +02:00
sys_s390.c
s390: autogenerate compat syscall wrappers
2019-01-18 09:33:19 +01:00
sysinfo.c
s390: no need to check return value of debugfs_create functions
2019-01-28 15:58:55 +01:00
time.c
s390/vdso: copy tod_steering_delta value to vdso_data page
2021-04-07 15:00:10 +02:00
topology.c
s390: convert to msecs_to_jiffies()
2020-06-29 16:31:46 +02:00
trace.c
s390/ftrace: fix potential crashes when switching tracers
2020-04-22 16:20:55 +02:00
traps.c
s390/traps: do not test MONITOR CALL without CONFIG_BUG
2021-07-25 14:36:17 +02:00
unwind_bc.c
s390/unwind: stop gracefully at user mode pt_regs in irq stack
2019-12-18 23:29:26 +01:00
uprobes.c
s390/uprobes: implement arch_uretprobe_is_alive()
2018-04-23 07:57:16 +02:00
uv.c
s390: mm: Fix secure storage access exception handling
2021-07-14 16:55:43 +02:00
vdso.c
s390: convert to GENERIC_VDSO
2020-08-26 18:47:21 +02:00
vmlinux.lds.S
vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG
2020-09-01 09:50:35 +02:00
vtime.c
s390/vtime: fix increased steal time accounting
2021-03-25 09:04:05 +01:00