kernel backtraces have become truncated. [root@easy cache]# uname -r 4.10.9-200.fc25.x86_64 [root@easy cache]# rpm -q kernel-debuginfo kernel-debuginfo-4.10.9-200.fc25.x86_64 [root@easy cache]# rpm -q systemtap systemtap-3.1-2.fc25.x86_64 # stap -e 'probe kernel.function("avc_has_perm"){print_backtrace()exit()}' -d kernel 0xffffffffa9383940 : avc_has_perm+0x0/0x1a0 [kernel] 0x0 (inexact) # stap -e 'probe kernel.function("avc_has_perm"){print_backtrace()exit()}' -DDEBUG_UNWIND -d kernel _stp_stack_unwind_one_kernel:274: STARTING kernel unwind 0xffffffffa9383940 : avc_has_perm+0x0/0x1a0 [kernel] _stp_stack_unwind_one_kernel:309: CONTINUING kernel unwind to depth 1 unwind:1478: pc=ffffffffa9383940, ffffffffa9383940 unwind:1521: trying debug_frame set_no_state_rule:249: reg=10, where=1 _stp_search_unwind_hdr:775: binary search for ffffffffa9383940 _stp_search_unwind_hdr:840: fde off=1ffea0 _stp_search_unwind_hdr:850: returning fde=ffffffffc1018b80 startLoc=ffffffff821aca76 unwind_frame:1194: /usr/lib/debug/usr/lib/modules/4.10.9-200.fc25.x86_64/vmlinux: fde=ffffffffc1018b80 unwind_frame:1199: /usr/lib/debug/usr/lib/modules/4.10.9-200.fc25.x86_64/vmlinux: cie=ffffffffc1018a98 parse_fde_cie:156: map retAddrReg value 16 to reg_info idx 16 unwind_frame:1214: startLoc: ffffffff821aca76, endLoc: ffffffff821acaaa unwind_frame:1216: pc (ffffffffa9383940) > endLoc(ffffffff821acaaa) unwind:1525: debug_frame failed: 1, trying eh_frame unwind_frame:1178: Module /usr/lib/debug/usr/lib/modules/4.10.9-200.fc25.x86_64/vmlinux: no unwind frame data _stp_stack_unwind_one_kernel:327: ret=-5 PC=ffffffffa9383940 SP=ffffbdcfc0b93e68 0x0 (inexact)
This message is a reminder that Fedora 25 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 25. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '25'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 25 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.