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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/1830796 Title: [Bionic][ARM64]Failure debugging linux kernel Status in gdb package in Ubuntu: Fix Released Status in gdb source package in Bionic: Fix Released Bug description: [Impact] GDB fails to debug ARM64 vmlinux debug image with proc/kcore information. For example it is unable to print values of variables like 'jiffies_64'. [Test] # gdb /usr/lib/debug/boot/vmlinux-4.18.0-20-generic /proc/kcore [New process 1] Core was generated by `BOOT_IMAGE=/boot/vmlinuz-4.18.0-20-generic root=UUID=edb5e5a7-8272-4e13-aa25-37'. #0 0x0000000000000000 in ?? () (gdb) p jiffies_64 Cannot access memory at address 0xffff000009616980 (gdb) [Fix] This issue was fixed upstream (git://sourceware.org/git/binutils-gdb.git) by the following patch: 8727de56b0 Fix tagged pointer support [Regression Potential] The risk of regression after applying this patch could be to architectures other than ARM64 due to changes to gdb/util.c. Please see comment #2 where I have tested the PPA package on a ppc64el system and found it does not introduce any regressions. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/1830796/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
