6675880fc4
kmemleak report:
unreferenced object 0xffff900a70ec7ec0 (size 32):
comm "ftracetest", pid 2770, jiffies 4295042510 (age 311.464s)
hex dump (first 32 bytes):
c8 31 23 45 0a 90 ff ff 40 85 c7 6e 0a 90 ff ff .1#E....@..n....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000009d3751fd>] kmem_cache_alloc_trace+0x2a2/0x440
[<0000000088b8124b>] eprobe_register+0x1e3/0x350
[<000000002a9a0517>] __ftrace_event_enable_disable+0x7c/0x240
[<0000000019109321>] event_enable_write+0x93/0xe0
[<000000007d85b320>] vfs_write+0xb9/0x260
[<00000000b94c5e41>] ksys_write+0x67/0xe0
[<000000005a08c81d>] __x64_sys_write+0x1a/0x20
[<00000000240bf576>] do_syscall_64+0x3b/0xc0
[<0000000043d5d9f6>] entry_SYSCALL_64_after_hwframe+0x44/0xae
unreferenced object 0xffff900a56bbf280 (size 128):
comm "ftracetest", pid 2770, jiffies 4295042510 (age 311.464s)
hex dump (first 32 bytes):
ff ff ff ff ff ff ff ff 00 00 00 00 01 00 00 00 ................
80 69 3b b2 ff ff ff ff 20 69 3b b2 ff ff ff ff .i;..... i;.....
backtrace:
[<000000009d3751fd>] kmem_cache_alloc_trace+0x2a2/0x440
[<00000000c4e90fad>] eprobe_register+0x1fc/0x350
[<000000002a9a0517>] __ftrace_event_enable_disable+0x7c/0x240
[<0000000019109321>] event_enable_write+0x93/0xe0
[<000000007d85b320>] vfs_write+0xb9/0x260
[<00000000b94c5e41>] ksys_write+0x67/0xe0
[<000000005a08c81d>] __x64_sys_write+0x1a/0x20
[<00000000240bf576>] do_syscall_64+0x3b/0xc0
[<0000000043d5d9f6>] entry_SYSCALL_64_after_hwframe+0x44/0xae
In new_eprobe_trigger(), allocated edata and trigger variables are
never freed.
To fix, free memory in disable_eprobe().
Link: https://lkml.kernel.org/r/20211008071802.GA2098@cosmos
Fixes: 7491e2c442781 ("tracing: Add a probe that attaches to trace events")
Signed-off-by: Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.