https://github.com/torvalds/linux
Revision 649e72070cbbb8600eb823833e4748f5a0815116 authored by Wang Yufen on 07 November 2022, 11:04:50 UTC, committed by Steven Rostedt (Google) on 17 November 2022, 01:29:00 UTC
kmemleak reports this issue:
unreferenced object 0xffff888105a18900 (size 128):
comm "test_progs", pid 18933, jiffies 4336275356 (age 22801.766s)
hex dump (first 32 bytes):
25 73 00 90 81 88 ff ff 26 05 00 00 42 01 58 04 %s......&...B.X.
03 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000560143a1>] __kmalloc_node_track_caller+0x4a/0x140
[<000000006af00822>] krealloc+0x8d/0xf0
[<00000000c309be6a>] trace_iter_expand_format+0x99/0x150
[<000000005a53bdb6>] trace_check_vprintf+0x1e0/0x11d0
[<0000000065629d9d>] trace_event_printf+0xb6/0xf0
[<000000009a690dc7>] trace_raw_output_bpf_trace_printk+0x89/0xc0
[<00000000d22db172>] print_trace_line+0x73c/0x1480
[<00000000cdba76ba>] tracing_read_pipe+0x45c/0x9f0
[<0000000015b58459>] vfs_read+0x17b/0x7c0
[<000000004aeee8ed>] ksys_read+0xed/0x1c0
[<0000000063d3d898>] do_syscall_64+0x3b/0x90
[<00000000a06dda7f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
iter->fmt alloced in
tracing_read_pipe() -> .. ->trace_iter_expand_format(), but not
freed, to fix, add free in tracing_release_pipe()
Link: https://lkml.kernel.org/r/1667819090-4643-1-git-send-email-wangyufen@huawei.com
Cc: stable@vger.kernel.org
Fixes: efbbdaa22bb7 ("tracing: Show real address for trace event arguments")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
1 parent 31029a8
Tip revision: 649e72070cbbb8600eb823833e4748f5a0815116 authored by Wang Yufen on 07 November 2022, 11:04:50 UTC
tracing: Fix memory leak in tracing_read_pipe()
tracing: Fix memory leak in tracing_read_pipe()
Tip revision: 649e720
| File | Mode | Size |
|---|---|---|
| bpf | ||
| cgroup | ||
| configs | ||
| debug | ||
| dma | ||
| entry | ||
| events | ||
| futex | ||
| gcov | ||
| irq | ||
| kcsan | ||
| livepatch | ||
| locking | ||
| module | ||
| power | ||
| printk | ||
| rcu | ||
| sched | ||
| time | ||
| trace | ||
| .gitignore | -rw-r--r-- | 67 bytes |
| Kconfig.freezer | -rw-r--r-- | 92 bytes |
| Kconfig.hz | -rw-r--r-- | 1.7 KB |
| Kconfig.locks | -rw-r--r-- | 4.9 KB |
| Kconfig.preempt | -rw-r--r-- | 4.8 KB |
| Makefile | -rw-r--r-- | 5.1 KB |
| acct.c | -rw-r--r-- | 15.8 KB |
| async.c | -rw-r--r-- | 9.2 KB |
| audit.c | -rw-r--r-- | 64.8 KB |
| audit.h | -rw-r--r-- | 10.7 KB |
| audit_fsnotify.c | -rw-r--r-- | 5.3 KB |
| audit_tree.c | -rw-r--r-- | 25.6 KB |
| audit_watch.c | -rw-r--r-- | 13.7 KB |
| auditfilter.c | -rw-r--r-- | 34.4 KB |
| auditsc.c | -rw-r--r-- | 80.8 KB |
| backtracetest.c | -rw-r--r-- | 1.9 KB |
| bounds.c | -rw-r--r-- | 943 bytes |
| capability.c | -rw-r--r-- | 14.8 KB |
| cfi.c | -rw-r--r-- | 2.2 KB |
| compat.c | -rw-r--r-- | 6.8 KB |
| configs.c | -rw-r--r-- | 2.0 KB |
| context_tracking.c | -rw-r--r-- | 23.2 KB |
| cpu.c | -rw-r--r-- | 65.8 KB |
| cpu_pm.c | -rw-r--r-- | 6.1 KB |
| crash_core.c | -rw-r--r-- | 12.7 KB |
| crash_dump.c | -rw-r--r-- | 1.1 KB |
| cred.c | -rw-r--r-- | 24.2 KB |
| delayacct.c | -rw-r--r-- | 7.0 KB |
| dma.c | -rw-r--r-- | 3.3 KB |
| exec_domain.c | -rw-r--r-- | 1.1 KB |
| exit.c | -rw-r--r-- | 45.5 KB |
| extable.c | -rw-r--r-- | 4.2 KB |
| fail_function.c | -rw-r--r-- | 6.8 KB |
| fork.c | -rw-r--r-- | 79.8 KB |
| freezer.c | -rw-r--r-- | 5.4 KB |
| gen_kheaders.sh | -rwxr-xr-x | 3.2 KB |
| groups.c | -rw-r--r-- | 5.0 KB |
| hung_task.c | -rw-r--r-- | 9.6 KB |
| iomem.c | -rw-r--r-- | 4.7 KB |
| irq_work.c | -rw-r--r-- | 7.5 KB |
| jump_label.c | -rw-r--r-- | 20.4 KB |
| kallsyms.c | -rw-r--r-- | 23.7 KB |
| kallsyms_internal.h | -rw-r--r-- | 858 bytes |
| kcmp.c | -rw-r--r-- | 5.4 KB |
| kcov.c | -rw-r--r-- | 29.2 KB |
| kexec.c | -rw-r--r-- | 7.3 KB |
| kexec_core.c | -rw-r--r-- | 31.1 KB |
| kexec_elf.c | -rw-r--r-- | 11.4 KB |
| kexec_file.c | -rw-r--r-- | 32.3 KB |
| kexec_internal.h | -rw-r--r-- | 1.3 KB |
| kheaders.c | -rw-r--r-- | 1.6 KB |
| kmod.c | -rw-r--r-- | 5.0 KB |
| kprobes.c | -rw-r--r-- | 73.9 KB |
| ksysfs.c | -rw-r--r-- | 6.3 KB |
| kthread.c | -rw-r--r-- | 41.6 KB |
| latencytop.c | -rw-r--r-- | 7.6 KB |
| module_signature.c | -rw-r--r-- | 1.1 KB |
| notifier.c | -rw-r--r-- | 17.9 KB |
| nsproxy.c | -rw-r--r-- | 12.8 KB |
| padata.c | -rw-r--r-- | 27.4 KB |
| panic.c | -rw-r--r-- | 18.8 KB |
| params.c | -rw-r--r-- | 23.1 KB |
| pid.c | -rw-r--r-- | 18.2 KB |
| pid_namespace.c | -rw-r--r-- | 11.3 KB |
| profile.c | -rw-r--r-- | 13.2 KB |
| ptrace.c | -rw-r--r-- | 36.9 KB |
| range.c | -rw-r--r-- | 3.0 KB |
| reboot.c | -rw-r--r-- | 32.1 KB |
| regset.c | -rw-r--r-- | 1.9 KB |
| relay.c | -rw-r--r-- | 29.9 KB |
| resource.c | -rw-r--r-- | 51.7 KB |
| resource_kunit.c | -rw-r--r-- | 4.3 KB |
| rseq.c | -rw-r--r-- | 10.0 KB |
| scftorture.c | -rw-r--r-- | 20.0 KB |
| scs.c | -rw-r--r-- | 2.9 KB |
| seccomp.c | -rw-r--r-- | 63.4 KB |
| signal.c | -rw-r--r-- | 123.3 KB |
| smp.c | -rw-r--r-- | 34.4 KB |
| smpboot.c | -rw-r--r-- | 11.9 KB |
| smpboot.h | -rw-r--r-- | 640 bytes |
| softirq.c | -rw-r--r-- | 24.1 KB |
| stackleak.c | -rw-r--r-- | 4.5 KB |
| stacktrace.c | -rw-r--r-- | 10.4 KB |
| static_call.c | -rw-r--r-- | 158 bytes |
| static_call_inline.c | -rw-r--r-- | 12.5 KB |
| stop_machine.c | -rw-r--r-- | 18.3 KB |
| sys.c | -rw-r--r-- | 65.3 KB |
| sys_ni.c | -rw-r--r-- | 10.2 KB |
| sysctl-test.c | -rw-r--r-- | 10.7 KB |
| sysctl.c | -rw-r--r-- | 59.8 KB |
| task_work.c | -rw-r--r-- | 5.1 KB |
| taskstats.c | -rw-r--r-- | 15.8 KB |
| torture.c | -rw-r--r-- | 25.3 KB |
| tracepoint.c | -rw-r--r-- | 20.3 KB |
| tsacct.c | -rw-r--r-- | 5.0 KB |
| ucount.c | -rw-r--r-- | 9.1 KB |
| uid16.c | -rw-r--r-- | 5.1 KB |
| uid16.h | -rw-r--r-- | 442 bytes |
| umh.c | -rw-r--r-- | 15.2 KB |
| up.c | -rw-r--r-- | 1.5 KB |
| user-return-notifier.c | -rw-r--r-- | 1.3 KB |
| user.c | -rw-r--r-- | 5.9 KB |
| user_namespace.c | -rw-r--r-- | 35.7 KB |
| usermode_driver.c | -rw-r--r-- | 4.3 KB |
| utsname.c | -rw-r--r-- | 3.8 KB |
| utsname_sysctl.c | -rw-r--r-- | 3.5 KB |
| watch_queue.c | -rw-r--r-- | 17.2 KB |
| watchdog.c | -rw-r--r-- | 22.6 KB |
| watchdog_hld.c | -rw-r--r-- | 7.7 KB |
| workqueue.c | -rw-r--r-- | 168.4 KB |
| workqueue_internal.h | -rw-r--r-- | 2.4 KB |
Computing file changes ...
