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comparison src/os_cpu/linux_x86/vm/os_linux_x86.cpp @ 11029:9ba41a4a71ff

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8004124: Handle and/or warn about SI_KERNEL Summary: Detect this crash in the signal handler and give a fatal error message instead of making us chase down bugs that don't reproduce Reviewed-by: kvn, mgerdin, dholmes
author coleenp
date Fri, 21 Jun 2013 10:50:19 -0400
parents 2cb5d5f6d5e5
children 980532a806a5 5e3b6f79d280
comparison
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11028:b3cd8b58b798 11029:9ba41a4a71ff
284 } 284 }
285 #ifdef AMD64 285 #ifdef AMD64
286 if (pc == (address) FetchNPFI) { 286 if (pc == (address) FetchNPFI) {
287 uc->uc_mcontext.gregs[REG_PC] = intptr_t (FetchNResume) ; 287 uc->uc_mcontext.gregs[REG_PC] = intptr_t (FetchNResume) ;
288 return 1 ; 288 return 1 ;
289 }
290 #endif // AMD64
291
292 #ifndef AMD64
293 // Halt if SI_KERNEL before more crashes get misdiagnosed as Java bugs
294 // This can happen in any running code (currently more frequently in
295 // interpreter code but has been seen in compiled code)
296 if (sig == SIGSEGV && info->si_addr == 0 && info->si_code == SI_KERNEL) {
297 fatal("An irrecoverable SI_KERNEL SIGSEGV has occurred due "
298 "to unstable signal handling in this distribution.");
289 } 299 }
290 #endif // AMD64 300 #endif // AMD64
291 301
292 // Handle ALL stack overflow variations here 302 // Handle ALL stack overflow variations here
293 if (sig == SIGSEGV) { 303 if (sig == SIGSEGV) {