Mail Bus Error
challenged and removed. (July 2015) (Learn how and when to remove this template message) In computing, a bus error is a fault raised by hardware, notifying an operating system (OS) that a
Bus Error C
process is trying to access memory that the CPU cannot physically address: an bus error linux invalid address for the address bus, hence the name. In modern use on most architectures these are much rarer how to solve bus error in linux than segmentation faults, which occur primarily due to memory access violations: problems in the logical address or permissions. On POSIX-compliant platforms, bus errors usually result in the SIGBUS signal being sent to
Linux Bus Error Core Dumped
the process that caused the error. SIGBUS can also be caused by any general device fault that the computer detects, though a bus error rarely means that the computer hardware is physically broken—it is normally caused by a bug in a program's source code.[citation needed] Bus errors may also be raised for certain other paging errors; see below. Contents 1 Causes 1.1 Non-existent address
Sigbus Error Linux
1.2 Unaligned access 1.3 Paging errors 2 Example 3 References Causes[edit] There are at least three main causes of bus errors: Non-existent address[edit] Software instructs the CPU to read or write a specific physical memory address. Accordingly, the CPU sets this physical address on its address bus and requests all other hardware connected to the CPU to respond with the results, if they answer for this specific address. If no other hardware responds, the CPU raises an exception, stating that the requested physical address is unrecognized by the whole computer system. Note that this only covers physical memory addresses. Trying to access an undefined virtual memory address is generally considered to be a segmentation fault rather than a bus error, though if the MMU is separate, the processor can't tell the difference. Unaligned access[edit] Most CPUs are byte-addressable, where each unique memory address refers to an 8-bit byte. Most CPUs can access individual bytes from each memory address, but they generally cannot access larger units (16 bits, 32 bits, 64 bits and so on) without these units being "aligned" to a specific boundary (the x86 platform being a notable exce
wontfix Merged with 50631 Found in version 1:4.61-21 Done: Diego Biurrun Bug is archived. No further changes may be made. Toggle useless messagesView this report as an mbox bus error vs segmentation fault folder, status mbox, maintainer mbox Report forwarded to Adam Heath : Bug#45873;
Bus Error 10 Mac
Package communicator. Full text and rfc822 format available. Acknowledgement sent to : New Bug report received and forwarded. how to debug bus error Copy sent to Adam Heath . Full text and rfc822 format available. Message #5 received at maintonly@bugs.debian.org (full text, mbox, reply): From: To: maintonly@bugs.debian.org Subject: communicator: Bus error when https://en.wikipedia.org/wiki/Bus_error getting mail Date: Fri, 24 Sep 1999 17:04:42 +1000 Package: communicator Version: 1:4.61-21 Severity: important Looks like the this release broke something. Clicking on any of the gadgets that causes communicator to try to get mail causes a bus error, immediately drawing the basic window, but before displaying any content in the window's client area sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=45873 NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 lseek(23, 1511424, SEEK_SET) = 1511424 read(23, "ll\0\0\0\34ft\300\1\0\0\0\1\3\252\332\262\r\307\325.\17"..., 2048) = 2048 --- SIGSEGV (Segmentation fault) --- getpid() = 1153 kill(1153, SIGBUS) = 0 --- SIGBUS (Bus error) --- +++ killed by SIGBUS +++ $ -- System Information Debian Release: potato Kernel Version: Linux anaconda 2.2.10-ac10 #33 Sat Sep 11 12:27:40 EST 1999 i586 unknown Versions of the packages communicator depends on: ii communicator-sm 4.61-11 Netscape Communicator 4.61 (static Motif) ii netscape-java-4 4.61-11 Netscape Java support for version 4.61 Severity set to `normal'. Request was from Robert Woodcock to control@bugs.debian.org. Full text and rfc822 format available. Reply sent to Diego Biurrun : You have taken responsibility. Full text and rfc822 format available. Notification sent to wontfix Merged with 50631 Found in version 1:4.61-21 Done: Diego Biurrun Bug is archived. No further changes https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=45873;msg=2 may be made. Full log View this message in rfc822 http://www.squid-cache.org/mail-archive/squid-users/200106/0070.html format Subject: Bug#45873: communicator: Bus error when getting mail Reply-To: , 45873-maintonly@bugs.debian.org Resent-From: Resent-To: Adam Heath Resent-Date: Fri, 24 Sep 1999 07:18:05 GMT Resent-Message-ID: Resent-Sender: owner@bugs.debian.org X-Debian-PR-Message: report 45873 X-Debian-PR-Package: communicator X-Debian-PR-Keywords: X-Loop: owner@bugs.debian.org Received: via spool bus error by maintonly@bugs.debian.org id=M.93815672018415 (code M ref -1); Fri, 24 Sep 1999 07:18:05 GMT From: To: maintonly@bugs.debian.org X-Mailer: bug 3.2.4 Message-Id: Date: Fri, 24 Sep 1999 17:04:42 +1000 Package: communicator Version: 1:4.61-21 Severity: important Looks like the this release broke something. Clicking on any of the gadgets that bus error c causes communicator to try to get mail causes a bus error, immediately drawing the basic window, but before displaying any content in the window's client area sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 sigprocmask(SIG_BLOCK, NULL, []) = 0 lseek(23, 1511424, SEEK_SET) = 1511424 read(23, "ll\0\0\0\34ft\300\1\0\0\0\1\3\252\332\262\r\307\325.\17"..., 2048) = 2048 --- SIGSEGV (Segmentation fault) --- getpid() = 1153 kill(1153, SIGBUS) = 0 --- SIGBUS (Bus error) --- +++ killed by SIGBUS +++ $ -- System Information Debian Release: potato Kernel Version: Linux anaconda 2.2.10-ac10 #33 Sat Sep 11 12:27:40 EST
Mon, 4 Jun 2001 21:44:48 +0100 ----- Original Message ----- From: "Hany" To: Sent: Sunday, June 03, 2001 7:46 AM Subject: [squid-users] Bus Error and Seg. violation > > hi,, > > when I run squid-2.4.STABLE1 without any parameter (using diskd). on High > load I got this message > > FATAL: Received Segment Violation...dying. > > but when I run it with -CNd1 I got this message (with the same > configuration) > FATAL: Received Bus Error...dying. > > OS: FreeBSD4.2 > DiskController: Adaptec SCSI 29160N# Read below to find out what a bus error is, but surficed to say, its possible for the same event to trigger different signals at different times, the normal stack traces should be conducted with gdb or your favorite debugger and that will hopefully reveal the problem > > does any body know what might cause Bus Error? A fatal failure in the execution of a machine language instruction resulting from the processor detecting an anomalous condition on its bus. Such conditions include invalid address alignment (accessing a multi-byte number at an odd address), accessing a physical address that does not correspond to any device, or some other device-specific hardware error. A bus error triggers a processor-level exception which Unix translates into a "SIGBUS" signal which, if not caught, will terminate the current process. in additiono ther sources for SIGBUS are problems during swapout, errors signaled by the bus / cache hardware (not on Intel). For example a non- recoverable cache error (-> ECC correction failed), bad memory or a parity/ECC failure on MIPS' bus system could bring you this nasty signal. on intel arch: $ grep SIGBUS /usr/src/linux/arch/i386/kernel/traps.c DO_ERROR(11, SIGBUS, "segment not present", segment_not_present) DO_ERROR(12, SIGBUS, "stack segment", stack_segment) DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, get_cr2()) so