post-2.6.32 rerression. On Thu, 11 Feb 2010 16:21:38 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=15273 > > URL: http://git.kernel.org/?p=linux/kernel/git/torvalds/lin > ux-2.6.git;a=commit;h=72f674d203cd230426437cdcf7dd6f68 > 1dad8b0d > Summary: Regression in ptrace (Wine) starting with 2.6.33-rc1 > Product: Process Management > Version: 2.5 > Kernel Version: 2.6.33-rc > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: Other > AssignedTo: process_other@xxxxxxxxxxxxxxxxxxxx > ReportedBy: mstefani@xxxxxxxxxx > Regression: Yes > > > 2.6.33-rc1 broke ptrace for Wine, specifically the setting of the debug > registers. This is visible in the Wine ntdll exception tests failing on > 2.6.33-rcX while they work just fine in 2.6.32. > > A regression test resulted in: > 72f674d203cd230426437cdcf7dd6f681dad8b0d is the first bad commit > commit 72f674d203cd230426437cdcf7dd6f681dad8b0d > Author: K.Prasad <prasad@xxxxxxxxxxxxxxxxxx> > Date: Mon Jun 1 23:45:48 2009 +0530 > > hw-breakpoints: modify Ptrace routines to access breakpoint registers > > This patch modifies the ptrace code to use the new wrapper routines around > the > debug/breakpoint registers. > > [ Impact: adapt x86 ptrace to the new breakpoint Api ] > > Original-patch-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: K.Prasad <prasad@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Maneesh Soni <maneesh@xxxxxxxxxxxxxxxxxx> > Reviewed-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx> > > :040000 040000 f72ff4760c3fa1dffcd72494e77bee2c76039505 > b60d5fe2088ff635568e800d5759a0b373b5e439 M arch > > > The first ntdll exception test in test_exceptions() > http://source.winehq.org/git/wine.git/?a=blob;f=dlls/ntdll/tests/exception.c;h=9149b6961764dec31a0af5cd3b93ab3072703dbb;hb=312e4f6b235a468f8bf764101a5b97cf34dd4143#l594 > run_exception_test(dreg_handler, NULL, &segfault_code, sizeof(segfault_code), > 0); > produces (make exception.ok) the output: > err:seh:setup_exception_record stack overflow 932 bytes in thread 0009 eip > 7bc3c97f esp 00240f8c stack 0x240000-0x241000-0x340000 > The stack overflow is detected by the ntdll internal function > setup_exception_record() > http://source.winehq.org/git/wine.git/?a=blob;f=dlls/ntdll/signal_i386.c;h=4eccb61954c43d75144575411313d59405decfc3;hb=312e4f6b235a468f8bf764101a5b97cf34dd4143#l1495 > which aborts the thread. > The problem happens on both i386 (Intel Atom CPU) as well as on x86_64 (Intel > Q9450); the stack overflow bytes differ though but are always the same for each > box. > > All the ntdll exception tests run just fine with 2.6.32 and older kernels. For > a summary of the ntdll exception tests please see > http://test.winehq.org/data/tests/ntdll:exception.html in the Wine column. > > thanks > bye > michael > > -- > Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
