Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

2020-09-28 Thread Greg Kroah-Hartman
On Tue, Sep 29, 2020 at 02:49:54PM +0900, Masami Hiramatsu wrote: > Hi, > > On Mon, 28 Sep 2020 18:15:35 -0400 > Steven Rostedt wrote: > > > On Mon, 28 Sep 2020 18:09:42 -0400 > > Steven Rostedt wrote: > > > > > On Tue, 29 Sep 2020 01:32:59 +0530 > > > Naresh Kamboju wrote: > > > > > > > sta

Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

2020-09-28 Thread Masami Hiramatsu
Hi, On Mon, 28 Sep 2020 18:15:35 -0400 Steven Rostedt wrote: > On Mon, 28 Sep 2020 18:09:42 -0400 > Steven Rostedt wrote: > > > On Tue, 29 Sep 2020 01:32:59 +0530 > > Naresh Kamboju wrote: > > > > > stable rc branch 4.19 build warning on arm64. > > > > > > ../kernel/kprobes.c: In function ‘

Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

2020-09-28 Thread Steven Rostedt
On Mon, 28 Sep 2020 18:09:42 -0400 Steven Rostedt wrote: > On Tue, 29 Sep 2020 01:32:59 +0530 > Naresh Kamboju wrote: > > > stable rc branch 4.19 build warning on arm64. > > > > ../kernel/kprobes.c: In function ‘kill_kprobe’: > > ../kernel/kprobes.c:1070:33: warning: statement with no effect

Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

2020-09-28 Thread Steven Rostedt
On Tue, 29 Sep 2020 01:32:59 +0530 Naresh Kamboju wrote: > stable rc branch 4.19 build warning on arm64. > > ../kernel/kprobes.c: In function ‘kill_kprobe’: > ../kernel/kprobes.c:1070:33: warning: statement with no effect > [-Wunused-value] > 1070 | #define disarm_kprobe_ftrace(p) (-ENODEV) >

Re: [PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

2020-09-28 Thread Naresh Kamboju
On Thu, 20 Aug 2020 at 15:23, Greg Kroah-Hartman wrote: > > From: Muchun Song > > commit 0cb2f1372baa60af8456388a574af6133edd7d80 upstream. > > We found a case of kernel panic on our server. The stack trace is as > follows(omit some irrelevant information): > > BUG: kernel NULL pointer derefere

[PATCH 4.19 38/92] kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler

2020-08-20 Thread Greg Kroah-Hartman
From: Muchun Song commit 0cb2f1372baa60af8456388a574af6133edd7d80 upstream. We found a case of kernel panic on our server. The stack trace is as follows(omit some irrelevant information): BUG: kernel NULL pointer dereference, address: 0080 RIP: 0010:kprobe_ftrace_handler+0x5e/0x