Description of problem: Kernel panic when booting with kernel 3.6.2 or 3.6.1. Kernel 3.5.6 still works for me and is the only way to boot my fedora machine. Version-Release number of selected component (if applicable): Name : kernel Arch : x86_64 Version : 3.6.2 Release : 4.fc17 How reproducible: Every time. Steps to Reproduce: 1. Reboot computer 2. At Grub2 screen, choose latest kernel of Fedora (Fedora (3.6.2-4.fc17.x86_64)) or allow it to be chosen by default after the wait interval expires 3. Wait a few seconds for the kernel to panic Actual results: System fails to boot, with a kernel panic error screen reading: " Loading Fedora (3.6.2-4.fc17.x86_64) Loading initial ramdisk ... [ 1.985582] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 1.985667] Pid: 1, comm: swapper/0 Not tainted 3.6.2-4.fc17.x86_64 #1 [ 1.985738] Call Trace: [ 1.985810] [<ffffffff81610554>] panic+0xc1/0x1d0 [ 1.985881] [<ffffffff81cfc0a2>] mount_block_root+0x1d6/0x287 [ 1.985952] [<ffffffff81cfc1aa>] mount_root+0x57/0x5b [ 1.986023] [<ffffffff81cfc2eb>] prepare_namespace+0x13d/0x176 [ 1.986100] [<ffffffff81085cc0>] ? release_tgcred.isra.7+0x30/0x30 [ 1.986173] [<ffffffff81cfbe08>] kernel_init+0x1cf/0x1d4 [ 1.986243] [<ffffffff81cfb614>] ? do_early_param+0x8c/0x8c [ 1.986317] [<ffffffff81623884>] kernel_thread_helper+0x4/0x10 [ 1.986389] [<ffffffff81cfbc39>] ? start_kernel+0x3c6/0x3c6 [ 1.986459] [<ffffffff81623880>] ? gs_change+0x13/0x13 " Expected results: A normal system boot Hardware: Samsung RC512-S01 Laptop with all stock components Output of lspci -v: " 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0 Capabilities: <access denied> Kernel driver in use: agpgart-intel 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: f4000000-f50fffff Prefetchable memory behind bridge: 00000000d0000000-00000000e1ffffff Capabilities: <access denied> Kernel driver in use: pcieport 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0, IRQ 50 Memory at f5400000 (64-bit, non-prefetchable) [size=4M] Memory at c0000000 (64-bit, prefetchable) [size=256M] I/O ports at e000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0, IRQ 51 Memory at f760a000 (64-bit, non-prefetchable) [size=16] Capabilities: <access denied> Kernel driver in use: mei 00:1a.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI]) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at f7608000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0, IRQ 54 Memory at f7600000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 0000c000-0000cfff Memory behind bridge: f6c00000-f75fffff Prefetchable memory behind bridge: 00000000e3700000-00000000e40fffff Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 I/O behind bridge: 0000b000-0000bfff Memory behind bridge: f6200000-f6bfffff Prefetchable memory behind bridge: 00000000e2c00000-00000000e35fffff Capabilities: <access denied> Kernel driver in use: pcieport 00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 0000a000-0000afff Memory behind bridge: f5800000-f61fffff Prefetchable memory behind bridge: 00000000e2100000-00000000e2afffff Capabilities: <access denied> Kernel driver in use: pcieport 00:1d.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI]) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at f7607000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci_hcd 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, medium devsel, latency 0 Capabilities: <access denied> 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04) (prog-if 01 [AHCI 1.0]) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 41 I/O ports at e0b0 [size=8] I/O ports at e0a0 [size=4] I/O ports at e090 [size=8] I/O ports at e080 [size=4] I/O ports at e060 [size=32] Memory at f7606000 (32-bit, non-prefetchable) [size=2K] Capabilities: <access denied> Kernel driver in use: ahci 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: medium devsel, IRQ 18 Memory at f7605000 (64-bit, non-prefetchable) [size=256] I/O ports at e040 [size=32] 01:00.0 3D controller: nVidia Corporation Device 0dec (rev a1) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f4000000 (32-bit, non-prefetchable) [size=16M] Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at e0000000 (64-bit, prefetchable) [size=32M] I/O ports at d000 [size=128] Expansion ROM at f5000000 [disabled] [size=512K] Capabilities: <access denied> Kernel driver in use: nouveau 02:00.0 Network controller: Intel Corporation Centrino Advanced-N + WiMAX 6250 (rev 5f) Subsystem: Intel Corporation Centrino Advanced-N + WiMAX 6250 2x2 AGN Flags: bus master, fast devsel, latency 0, IRQ 53 Memory at f6c00000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlwifi 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0, IRQ 52 I/O ports at b000 [size=256] Memory at e2c04000 (64-bit, prefetchable) [size=4K] Memory at e2c00000 (64-bit, prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: r8169 04:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) (prog-if 30 [XHCI]) Subsystem: Samsung Electronics Co Ltd Device c0ae Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f5800000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: xhci_hcd "
With the help of some friendly IRC folk, was able to regenerate my grub.cfg: grub2-mkconfig -o /boot/grub2/grub.cfg The two new kernel menu options were missing their initrd lines...