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From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031114 Description of problem: Running an ia32 compiled version of the linux test project (ltp.sf.net) on an HP rx2600 running AS 3, the first test (abort01), which does an abort() syscall, hits the BUG_ON in elf_core_copy_regs(): Red Hat Enterprise Linux AS release 3 (Taroon Update 1) Kernel 2.4.21-9.EL on an ia64 singsing login: IA32 syscall #270 issued, maybe we should implement it IA32 syscall #270 issued, maybe we should implement it Unexpected IA-32 intercept trap (Trap 46) iip - 0x40059163, ifa - 0x40097ba0, isr - 0x186, iim - 0xf4 sizeof(elf_gregset_t) (1024) != sizeof(struct pt_regs) (400) kernel BUG at /usr/src/build/336818-ia64/BUILD/kernel-2.4.21/linux-2.4.21/include/linux/elfcore.h:94! Unable to handle kernel NULL pointer dereferenceabort01[9742]: Oops 8804682956800 Pid: 9742, comm: abort01 EIP is at elf_core_dump [kernel] 0x640 (2.4.21-9.EL) psr : 0000101008026038 ifs : 8000000000000e24 ip : [<e000000004470480>] Not tainted unat: 0000000000000000 pfs : 0000000000000e24 rsc : 0000000000000003 rnat: e000000004b7b790 bsps: e000000004b7b790 pr : 0002924155aa9a65 ldrs: 0000000000000000 ccv : 0000000000000000 fpsr: 0009804c8a70033f b0 : e000000004470470 b6 : e0000000044dfa60 b7 : e000000004414e00 f6 : 0fffbccccccccc8c00000 f7 : 0ffdcb640000000000000 f8 : 100029000000000000000 f9 : 10002a000000000000000 r1 : e000000004cabd00 r2 : c0000000fee01000 r3 : 00000000000000fd r8 : 0000000000000066 r9 : 0000000000000000 r10 : 0000000000001000 r11 : 0000000000000100 r12 : e000004061eeef50 r13 : e000004061ee8000 r14 : 0000000000000000 r15 : 0000000000000000 r16 : 0000000000000000 r17 : 0000000000004000 r18 : 0000000000004000 r19 : 0000000000004000 r20 : e000000004b82eb4 r21 : e000000004ab5768 r22 : e000000004b82eb4 r23 : e000004061eeeef0 r24 : 0000000000000000 r25 : 0000000000000000 r26 : 0000000000080000 r27 : 0000000000000000 r28 : 0000000000080000 r29 : 0000000000000001 r30 : e0000040fef98028 r31 : 0000000000000001 Call Trace: [<e000000004415620>] sp=0xe000004061eeeb60 bsp=0xe000004061ee9468 show_stack [kernel] 0x80 [<e000000004430550>] sp=0xe000004061eeed20 bsp=0xe000004061ee9438 die [kernel] 0x1b0 [<e0000000044527f0>] sp=0xe000004061eeed20 bsp=0xe000004061ee93d8 ia64_do_page_fault [kernel] 0x310 [<e00000000440e6e0>] sp=0xe000004061eeedb0 bsp=0xe000004061ee93d8 ia64_leave_kernel [kernel] 0x0 [<e000000004470480>] sp=0xe000004061eeef50 bsp=0xe000004061ee92b8 elf_core_dump [kernel] 0x640 [<e0000000045306e0>] sp=0xe000004061eefd80 bsp=0xe000004061ee9260 do_coredump [kernel] 0x500 [<e0000000044a9270>] sp=0xe000004061eefdd0 bsp=0xe000004061ee91e8 get_signal_to_deliver [kernel] 0x630 [<e00000000442ebf0>] sp=0xe000004061eefdd0 bsp=0xe000004061ee9180 ia64_do_signal [kernel] 0xd0 [<e00000000440eb20>] sp=0xe000004061eefe50 bsp=0xe000004061ee9130 handle_signal_delivery [kernel] 0x40 [<e00000000440e750>] sp=0xe000004061eefe60 bsp=0xe000004061ee9130 ia64_leave_kernel [kernel] 0x70 Kernel panic: Fatal exception 89 static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs) 90 { 91 #ifdef ELF_CORE_COPY_REGS 92 ELF_CORE_COPY_REGS((*elfregs), regs) 93 #else 94 BUG_ON(sizeof(*elfregs) != sizeof(*regs)); <--- here 95 *(struct pt_regs *)elfregs = *regs; 96 #endif 97 } Looking at linux-2.4 bk tree, this just prints a warning rather than triggering a BUG. Version-Release number of selected component (if applicable): kernel-2.4.21-9.EL How reproducible: Always Steps to Reproduce: 1. download the ltp-20040108 package from ltp.sf.net 2. compile on ia32 box 3. copy over to ia64 box running AS 3 4. run 'make install' as root (installs to testcases/bin) 5. run './runalltests.sh' First test is abort01, which should crash the box Actual Results: kernel panic Additional info:
ia32 core dump support has been added for ia64 in the U2 stream. i've verfied the fix with ltp test suite.
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2004-188.html