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| author | Jeff Dike <jdike@addtoit.com> | 2005-11-07 00:58:45 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 07:53:30 -0800 |
| commit | 953206858070e5921b9d5931c293ec983a6790cb (patch) | |
| tree | 9caf1d094ee6f001856d5c433b3c60f309c9da98 /arch/um | |
| parent | d9b5444eeb3a663ca4a625878b1421c9e9b18e8b (diff) | |
| download | linux-3.10-953206858070e5921b9d5931c293ec983a6790cb.tar.gz linux-3.10-953206858070e5921b9d5931c293ec983a6790cb.tar.bz2 linux-3.10-953206858070e5921b9d5931c293ec983a6790cb.zip | |
[PATCH] uml: improve stub debugging
Add some more debugging information when a stub does something unexpected,
usually segfaulting. Now, it dumps out the stub's registers as well as the
signal.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/kernel/skas/process.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index 5cd0e992978..42f2da687dc 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -69,6 +69,17 @@ void wait_stub_done(int pid, int sig, char * fname) if((n < 0) || !WIFSTOPPED(status) || (WSTOPSIG(status) != SIGUSR1 && WSTOPSIG(status) != SIGTRAP)){ + unsigned long regs[FRAME_SIZE]; + if(ptrace(PTRACE_GETREGS, pid, 0, regs) < 0) + printk("Failed to get registers from stub, " + "errno = %d\n", errno); + else { + int i; + + printk("Stub registers -\n"); + for(i = 0; i < FRAME_SIZE; i++) + printk("\t%d - %lx\n", i, regs[i]); + } panic("%s : failed to wait for SIGUSR1/SIGTRAP, " "pid = %d, n = %d, errno = %d, status = 0x%x\n", fname, pid, n, errno, status); |