The kdump service fails to start on up-to-date Fedora 23 (upgraded from F22). The logs contain this (most recent messages above): janv. 13 14:58:01 milan audit[2482]: AVC avc: denied { read } for pid=2482 comm="kexec" name="vmlinuz-4.3.3-300.fc23.x86_64" dev="sda7" ino=138424 scontext=system_u:system_r:kdump_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=0 janv. 13 14:58:01 milan kernel: audit: type=1400 audit(1452693481.071:468): avc: denied { read } for pid=2482 comm="kexec" name="vmlinuz-4.3.3-300.fc23.x86_64" dev="sda7" ino=138424 scontext=system_u:system_r:kdump_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=0 janv. 13 14:58:01 milan kernel: audit: type=1300 audit(1452693481.071:468): arch=c000003e syscall=2 success=no exit=-13 a0=7fff959bdf64 a1=0 a2=1b6 a3=23 items=0 ppid=1389 pid=2482 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="kexec" exe="/usr/sbin/kexec" subj=system_u:system_r:kdump_t:s0 key=(null) janv. 13 14:58:01 milan systemd[1]: kdump.service: Main process exited, code=exited, status=1/FAILURE janv. 13 14:58:01 milan audit[2482]: SYSCALL arch=c000003e syscall=2 success=no exit=-13 a0=7fff959bdf64 a1=0 a2=1b6 a3=23 items=0 ppid=1389 pid=2482 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="kexec" exe="/usr/sbin/kexec" subj=system_u:system_r:kdump_t:s0 key=(null) janv. 13 14:58:01 milan systemd[1]: Failed to start Crash recovery kernel arming. janv. 13 14:58:01 milan audit: PROCTITLE proctitle=2F7362696E2F6B65786563002D70002D2D636F6D6D616E642D6C696E653D424F4F545F494D4147453D2F626F6F742F766D6C696E757A2D342E332E332D3330302E666332332E7838365F363420726F6F743D555549443D32393439623337392D626437362D346564362D613262652D31326131626334363334633520726F2061 janv. 13 14:58:01 milan systemd[1]: kdump.service: Unit entered failed state. janv. 13 14:58:01 milan systemd[1]: kdump.service: Failed with result 'exit-code'. janv. 13 14:58:01 milan audit[2482]: AVC avc: denied { read } for pid=2482 comm="kexec" name="vmlinuz-4.3.3-300.fc23.x86_64" dev="sda7" ino=138424 scontext=system_u:system_r:kdump_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=0 janv. 13 14:58:01 milan systemd[1]: Started Harvest vmcores for ABRT. janv. 13 14:58:01 milan audit[2482]: SYSCALL arch=c000003e syscall=2 success=no exit=-13 a0=7fff959bdf64 a1=0 a2=7fff959bbe80 a3=697 items=0 ppid=1389 pid=2482 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="kexec" exe="/usr/sbin/kexec" subj=system_u:system_r:kdump_t:s0 key=(null) janv. 13 14:58:01 milan audit: PROCTITLE proctitle=2F7362696E2F6B65786563002D70002D2D636F6D6D616E642D6C696E653D424F4F545F494D4147453D2F626F6F742F766D6C696E757A2D342E332E332D3330302E666332332E7838365F363420726F6F743D555549443D32393439623337392D626437362D346564362D613262652D31326131626334363334633520726F2061 janv. 13 14:58:01 milan audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=kdump comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' janv. 13 14:58:01 milan kdumpctl[1381]: Cannot open `/boot/vmlinuz-4.3.3-300.fc23.x86_64': Permission denied janv. 13 14:58:01 milan kdumpctl[1381]: kexec: failed to load kdump kernel janv. 13 14:58:01 milan kdumpctl[1381]: Starting kdump: [FAILED]
*** This bug has been marked as a duplicate of bug 1244057 ***