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Baoquan He f79957d274 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 10:47:21 +01:00
..
syscalls
s390: wire up clone3 system call
2019-07-23 10:45:53 +02:00
vdso32
s390/vdso: drop unnecessary cc-ldoption
2019-05-03 17:17:58 +02:00
vdso64
s390/vdso: fix vDSO clock_getres()
2020-06-30 15:37:05 -04:00
.gitignore
…
alternative.c
s390: add automatic detection of the spectre defense
2018-03-28 08:38:24 +02:00
asm-offsets.c
s390/vdso: fix vDSO clock_getres()
2020-06-30 15:37:05 -04:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
audit.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
base.S
s390/base: remove unused s390_base_mcck_handler
2019-09-03 13:53:56 +02:00
cache.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_linux.c
s390: use generic UID16 implementation
2019-01-18 09:33:18 +01:00
compat_linux.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_ptrace.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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 08:24:17 +02:00
crash_dump.c
memblock: memblock_phys_alloc(): don't panic
2019-03-12 10:04:01 -07:00
debug.c
s390/debug: fix debug area life cycle
2021-09-15 09:47:28 +02:00
diag.c
s390/ftrace: fix potential crashes when switching tracers
2020-05-02 08:48:44 +02:00
dis.c
s390/disassembler: increase ebpf disasm buffer size
2021-05-11 14:04:01 +02:00
dumpstack.c
s390/unwind: remove stack recursion warning
2019-08-06 13:58:35 +02:00
early_printk.c
s390/sclp: avoid using strncmp with hardcoded length
2019-08-29 15:34:58 +02:00
early.c
s390: make PCI mio support a machine flag
2021-09-22 12:26:29 +02:00
ebcdic.c
s390: ebcdic: convert comments to UTF-8
2018-08-23 18:48:43 -07:00
entry.h
PM: hibernate: powerpc: Expose pfn_is_nosave() prototype
2019-06-14 10:48:56 +02:00
entry.S
s390/entry: save the caller of psw_idle
2021-04-28 13:19:15 +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 13:30:58 +02:00
guarded_storage.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
head64.S
s390 updates for the 5.4 merge window
2019-09-17 14:04:43 -07:00
idle.c
s390/idle: fix cpu idle time calculation
2019-10-31 17:26:48 +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 10:47:21 +01:00
irq.c
s390/irq: replace setup_irq() by request_irq()
2020-10-01 13:17:40 +02:00
jump_label.c
s390/jump_label: print real address in a case of a jump label bug
2021-09-22 12:26:29 +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.c
s390/kernel: introduce .dma sections
2019-04-29 10:47:10 +02:00
lgr.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
machine_kexec_file.c
s390/kexec: fix memory leak of ipl report buffer
2021-11-26 10:47:21 +01:00
machine_kexec_reloc.c
s390/kaslr: add support for R_390_JMP_SLOT relocation type
2020-05-27 17:46:47 +02:00
machine_kexec.c
s390: disable preemption when switching to nodat stack with CALL_ON_STACK
2020-01-04 19:18:31 +01:00
Makefile
s390: clean .bss before running uncompressed kernel
2019-08-21 12:58:52 +02:00
mcount.S
s390/ftrace: fix ftrace_update_ftrace_func implementation
2021-07-28 13:30:58 +02:00
module.c
s390/module: avoid using strncmp with hardcoded length
2019-08-29 15:34:57 +02:00
nmi.c
s390: simplify disabled_wait
2019-05-02 13:54:11 +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
os_info.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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
2019-12-31 16:45:43 +01:00
perf_cpum_cf_events.c
s390/cpumf: Add extended counter set definitions for model 8561 and 8562
2019-07-11 20:40:01 +02:00
perf_cpum_cf.c
s390/cpumf: Adjust registration of s390 PMU device drivers
2019-12-31 16:45:43 +01:00
perf_cpum_sf.c
s390/cpum_sf.c: fix file permission for cpum_sfb_size
2020-11-24 13:29:23 +01:00
perf_event.c
s390: add error handling to perf_callchain_kernel
2019-12-31 16:44:30 +01:00
perf_regs.c
s390/perf: fix gcc 8 array-bounds warning
2018-07-02 11:24:54 +02:00
pgm_check.S
s390/kernel: convert SYSCALL and PGM_CHECK handlers to .quad
2019-04-29 10:47:10 +02:00
process.c
s390: prevent leaking kernel address in BEAR
2020-04-13 10:48:06 +02:00
processor.c
s390/cpuinfo: fix wrong output when CPU0 is offline
2020-04-23 10:36:33 +02:00
ptrace.c
s390/ptrace: return -ENOSYS when invalid syscall is supplied
2021-04-28 13:19:14 +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
2020-08-26 10:41:02 +02:00
setup.c
s390/sclp_vt220: fix console name to match device
2021-07-20 16:10:43 +02:00
signal.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
smp.c
s390/smp: __smp_rescan_cpus() - move cpumask away from stack
2021-03-17 17:03:45 +01:00
stacktrace.c
s390/stacktrace: use common arch_stack_walk infrastructure
2019-08-21 12:58:53 +02:00
sthyi.c
s390/sthyi: Fix machine name validity indication
2018-10-15 12:17:00 +02:00
suspend.c
s390: unify linker symbols usage
2018-02-27 08:05:23 +01:00
swsusp.S
s390: enforce CONFIG_SMP
2019-06-07 10:09:37 +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/stp: add locking to sysfs functions
2020-11-05 11:43:30 +01:00
topology.c
s390/topology: avoid firing events before kobjs are created
2019-09-23 23:27:52 +02:00
trace.c
s390/ftrace: fix potential crashes when switching tracers
2020-05-02 08:48:44 +02:00
traps.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2019-07-08 21:48:15 -07:00
unwind_bc.c
s390/unwind: filter out unreliable bogus %r14
2020-01-04 19:18:29 +01:00
uprobes.c
s390/uprobes: implement arch_uretprobe_is_alive()
2018-04-23 07:57:16 +02:00
vdso.c
s390 updates for the 5.4 merge window
2019-09-17 14:04:43 -07:00
vmlinux.lds.S
s390: put _stext and _etext into .text section
2019-08-06 13:58:35 +02:00
vtime.c
s390/vtime: fix increased steal time accounting
2021-03-24 11:26:35 +01:00