https://bugs.kde.org/show_bug.cgi?id=373166
--- Comment #10 from Tushar <ntus...@yahoo.com> --- Based on the crash information, I did disassemble the library in question (/lib64/tls/libpthread-2.3.4.so) and looked at the instructions at the address 0x382BF0A2F0. The instructions are 382bf0a2d1: e8 92 ab ff ff callq 382bf04e68 <memcpy@plt> 382bf0a2d6: 49 83 fc ff cmp $0xffffffffffffffff,%r12 382bf0a2da: 74 23 je 382bf0a2ff <check_add_mapping+0x19f> 382bf0a2dc: 48 8d 15 3d fe ff ff lea -0x1c3(%rip),%rdx # 382bf0a120 <__sem_search> 382bf0a2e3: 48 8d 35 66 a0 10 00 lea 0x10a066(%rip),%rsi # 382c014350 <__sem_mappings> 382bf0a2ea: 48 89 df mov %rbx,%rdi 382bf0a2ed: e8 46 ad ff ff callq 382bf05038 <tsearch@plt> 382bf0a2f2: 48 85 c0 test %rax,%rax 382bf0a2f5: 74 08 je 382bf0a2ff <check_add_mapping+0x19f> 382bf0a2f7: 4d 89 e7 mov %r12,%r15 382bf0a2fa: e9 74 ff ff ff jmpq 382bf0a273 <check_add_mapping+0x113> 382bf0a2ff: 48 89 df mov %rbx,%rdi 382bf0a302: e8 71 ad ff ff callq 382bf05078 <free@plt> 382bf0a307: e9 67 ff ff ff jmpq 382bf0a273 <check_add_mapping+0x113> 382bf0a30c: 45 31 c9 xor %r9d,%r9d 382bf0a30f: 45 89 f0 mov %r14d,%r8d The thing that caught my attention is that data @ 0x382BF0A2F0 seems to be part of callq instruction @ 382bf0a2ed. VEX seems to think it is the start of a new instruction. The disassembly of the test code (sem_open) itself at the are of interest is 400aca: ba f6 0d 40 00 mov $0x400df6,%edx 400acf: be 20 00 00 00 mov $0x20,%esi 400ad4: b8 00 00 00 00 mov $0x0,%eax 400ad9: e8 e2 fd ff ff callq 4008c0 <snprintf@plt> 400ade: 48 8d 7d c0 lea -0x40(%rbp),%rdi 400ae2: b9 01 00 00 00 mov $0x1,%ecx 400ae7: ba 80 01 00 00 mov $0x180,%edx 400aec: be c0 00 00 00 mov $0xc0,%esi 400af1: b8 00 00 00 00 mov $0x0,%eax 400af6: e8 25 fe ff ff callq 400920 <sem_open@plt> 400afb: 48 89 05 b6 07 20 00 mov %rax,0x2007b6(%rip) # 6012b8 <s_sem> 400b02: 48 83 3d ae 07 20 00 cmpq $0x0,0x2007ae(%rip) # 6012b8 <s_sem> 400b09: 00 400b0a: 75 24 jne 400b30 <main+0xfa> 400b0c: 48 8d 55 c0 lea -0x40(%rbp),%rdx 400b10: be 10 0e 40 00 mov $0x400e10,%esi 400b15: 48 8b 3d 7c 07 20 00 mov 0x20077c(%rip),%rdi # 601298 <stderr@@GLIBC_2.2.5> 400b1c: b8 00 00 00 00 mov $0x0,%eax 400b21: e8 ea fd ff ff callq 400910 <fprintf@plt> I hope this information helps -- You are receiving this mail because: You are watching all bug changes.
