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Description of problem: [root@localhost ~]# mount -t efivarfs - /sys/firmware/efi/efivars/ [root@localhost ~]# ls -1 /sys/firmware/efi/efivars/ | wc -l 28 [root@localhost ~]# stat -c%h /sys/firmware/efi/efivars/ 2 [root@localhost ~]# rm -f /sys/firmware/efi/efivars/* [ 41.690805] ------------[ cut here ]------------ [ 41.692975] WARNING: at fs/inode.c:280 drop_nlink+0x46/0x50() [ 41.694546] Modules linked in: nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables iptable_nat nf_nat iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack vfat fat i2c_piix4 i2c_core microcode virtio_net [ 41.701583] Pid: 822, comm: rm Tainted: G W 3.6.11-3.fc18.x86_64.debug #1 [ 41.703008] Call Trace: [ 41.703499] [<ffffffff8106781f>] warn_slowpath_common+0x7f/0xc0 [ 41.704591] [<ffffffff8106787a>] warn_slowpath_null+0x1a/0x20 [ 41.705777] [<ffffffff811eb266>] drop_nlink+0x46/0x50 [ 41.706855] [<ffffffff81553fca>] efivarfs_unlink+0x8a/0xd0 [ 41.707952] [<ffffffff811dd75e>] vfs_unlink+0x9e/0x110 [ 41.710800] [<ffffffff811dd90d>] do_unlinkat+0x13d/0x1a0 [ 41.712096] [<ffffffff810d6b6d>] ? trace_hardirqs_on_caller+0x10d/0x1a0 [ 41.713808] [<ffffffff8110181c>] ? __audit_syscall_entry+0xcc/0x300 [ 41.714983] [<ffffffff8134f50e>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 41.716548] [<ffffffff811e025b>] sys_unlinkat+0x1b/0x50 [ 41.717694] [<ffffffff816e7fe9>] system_call_fastpath+0x16/0x1b [ 41.718995] ---[ end trace 33f799b901d1db9e ]--- [root@localhost ~]# ls -1 /sys/firmware/efi/efivars/ | wc -l 15 [root@localhost ~]# stat -c%h /sys/firmware/efi/efivars/ 4294967285 Version-Release number of selected component (if applicable): 3.6.11-3.fc18.x86_64.debug 3.7.0-2.fc19.x86_64 How reproducible: Always reproduced on QEMU.
What are you using for a QEMU image? Default KVM/QEMU images don't have EFI emulated.
(In reply to comment #1) > What are you using for a QEMU image? Default KVM/QEMU images don't have EFI > emulated. James Bottomley's OVMF. OVMF-0.1+r13902-1.1.x86_64.rpm. qemu-kvm -enable-kvm -nodefaults -nographic -cpu host -smp 2 -m 2048 -bios /usr/share/qemu-ovmf/bios/bios.bin -drive file=root-fedora-18-Beta.raw,if=ide,cache=none,aio=native -net nic,model=virtio -net user -serial stdio Btw, I figure there are a series of more bugs in efivarfs. Please tell me when it becomes better to report upstream.
(In reply to comment #2) > (In reply to comment #1) > > What are you using for a QEMU image? Default KVM/QEMU images don't have EFI > > emulated. > > James Bottomley's OVMF. OVMF-0.1+r13902-1.1.x86_64.rpm. > > qemu-kvm -enable-kvm -nodefaults -nographic -cpu host -smp 2 -m 2048 -bios > /usr/share/qemu-ovmf/bios/bios.bin -drive > file=root-fedora-18-Beta.raw,if=ide,cache=none,aio=native -net > nic,model=virtio -net user -serial stdio OK. I'll see if I can recreate tomorrow with that. Thank you. > Btw, I figure there are a series of more bugs in efivarfs. Please tell me > when it becomes better to report upstream. Now would be a good time to report upstream. The efivarfs filesystem was just merged for the 3.8 kernel, and we're still before 3.8-rc1 so getting issues fixed upstream before 3.8 is released would be very good.
I've added your patch to f18 and rawhide. Many thanks for working through this.
kernel-3.7.1-5.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/kernel-3.7.1-5.fc18
Package kernel-3.7.1-5.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.7.1-5.fc18' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-0518/kernel-3.7.1-5.fc18 then log in and leave karma (feedback).
kernel-3.7.2-201.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/kernel-3.7.2-201.fc18
kernel-3.7.2-201.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.