On Mon, Nov 15, 2010 at 02:19:30AM +0800, Yinghai Lu wrote: > On 11/14/2010 09:32 AM, Wu Fengguang wrote: > > Hi, > > > > I just found another problem. When passing "mem=256" to 2.6.37-rc1, > > it dies hard early (not able to print any boot log). With this patch > > applied, it's a bit better: it shows a kernel panic, but still dies > > hard (not able to reboot with "panic=10"). > > > > if you did use "mem=256", you should get panic. Oops, "256" is accepted as 256 bytes.. Sorry for the noise! It boots OK with "mem=256M". Thanks, Fengguang > early console in setup code > Probing EDD (edd=off to disable)... ok > early console in decompress_kernel > decompress_kernel: > input: [0x2431269-0x2e7fec6], output: 0x1000000, heap: [0x2e856c0-0x2e8c6bf] > > Decompressing Linux... Parsing ELF... done. > Booting the kernel. > [ 0.000000] bootconsole [uart0] enabled > [ 0.000000] Kernel Layout: > [ 0.000000] .text: [0x01000000-0x01ce0e48] > [ 0.000000] .rodata: [0x01ce6000-0x0240ffff] > [ 0.000000] .data: [0x02410000-0x025a50bf] > [ 0.000000] .init: [0x025a7000-0x0286afff] > [ 0.000000] .bss: [0x02875000-0x0348a6d7] > [ 0.000000] .brk: [0x0348b000-0x034aafff] > [ 0.000000] memblock_x86_reserve_range: [0x01000000-0x0348a6d7] TEXT DATA BSS > [ 0.000000] memblock_x86_reserve_range: [0x7c59d000-0x7fffefff] RAMDISK > [ 0.000000] memblock_x86_reserve_range: [0x0009fc00-0x000fffff] * BIOS reserved > [ 0.000000] Initializing cgroup subsys cpuset > [ 0.000000] Initializing cgroup subsys cpu > [ 0.000000] Linux version 2.6.37-rc1-tip-yh-02102-g776a022-dirty (yhlu@xxxxxxxxxxxxxxx) (gcc version 4.5.0 20100604 [gcc-4_5-branch revision 160292] (SUSE Linux) ) #276 SMP Sat Nov 13 15:34:15 PST 2010 > [ 0.000000] Command line: BOOT_IMAGE=linux debug apic=debug ramdisk_size=262144 root=/dev/ram0 rw ip=dhcp mem=256 console=uart8250,io,0x3f8,115200 initrd=initrd.img > [ 0.000000] KERNEL supported cpus: > [ 0.000000] Intel GenuineIntel > [ 0.000000] AMD AuthenticAMD > [ 0.000000] Centaur CentaurHauls > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: [0x00000000000000-0x0000000009fbff] (usable) > [ 0.000000] BIOS-e820: [0x0000000009fc00-0x0000000009ffff] (reserved) > [ 0.000000] BIOS-e820: [0x000000000f0000-0x000000000fffff] (reserved) > [ 0.000000] BIOS-e820: [0x00000000100000-0x0000002ffeffff] (usable) > [ 0.000000] BIOS-e820: [0x0000002fff0000-0x0000002fffffff] (ACPI data) > [ 0.000000] BIOS-e820: [0x000000fffc0000-0x000000ffffffff] (reserved) > [ 0.000000] e820 remove range: [0x00000000000100-0xfffffffffffffffe] (usable) > [ 0.000000] NX (Execute Disable) protection: active > [ 0.000000] user-defined physical RAM map: > [ 0.000000] user: [0x00000000000000-0x000000000000ff] (usable) > [ 0.000000] user: [0x0000000009fc00-0x0000000009ffff] (reserved) > [ 0.000000] user: [0x000000000f0000-0x000000000fffff] (reserved) > [ 0.000000] user: [0x0000002fff0000-0x0000002fffffff] (ACPI data) > [ 0.000000] user: [0x000000fffc0000-0x000000ffffffff] (reserved) > [ 0.000000] e820 update range: [0x00000000000000-0x000000000000ff] (usable) ==> (reserved) > [ 0.000000] aligned physical RAM map: > [ 0.000000] aligned: [0x00000000000000-0x000000000000ff] (reserved) > [ 0.000000] aligned: [0x0000000009fc00-0x0000000009ffff] (reserved) > [ 0.000000] aligned: [0x000000000f0000-0x000000000fffff] (reserved) > [ 0.000000] aligned: [0x0000002fff0000-0x0000002fffffff] (ACPI data) > [ 0.000000] aligned: [0x000000fffc0000-0x000000ffffffff] (reserved) > [ 0.000000] DMI 2.5 present. > [ 0.000000] DMI: /VirtualBox, BIOS VirtualBox 12/01/2006 > [ 0.000000] e820 update range: [0x00000000000000-0x0000000000ffff] (usable) ==> (reserved) > [ 0.000000] e820 remove range: [0x000000000a0000-0x000000000fffff] (usable) > [ 0.000000] No AGP bridge found > [ 0.000000] last_pfn = 0x0 max_arch_pfn = 0x400000000 > [ 0.000000] MTRR default type: uncachable > [ 0.000000] MTRR variable ranges disabled: > [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 > [ 0.000000] CPU MTRRs all blank - virtualized system. > [ 0.000000] Scan SMP from ffff880000000000 for 1024 bytes. > [ 0.000000] Scan SMP from ffff88000009fc00 for 1024 bytes. > [ 0.000000] found SMP MP-table at [ffff88000009fff0] 9fff0 > [ 0.000000] memblock_x86_reserve_range: [0x0009fff0-0x0009ffff] * MP-table mpf > [ 0.000000] mpc: e1160-e1254 > [ 0.000000] memblock_x86_reserve_range: [0x000e1160-0x000e1253] * MP-table mpc > [ 0.000000] memblock_x86_reserve_range: [0x0348b000-0x0348b070] BRK > [ 0.000000] MEMBLOCK configuration: > [ 0.000000] memory size = 0x0 > [ 0.000000] memory.cnt = 0x1 > [ 0.000000] memory[0x0] [0x00000000000000-0xffffffffffffffff], 0x0 bytes > [ 0.000000] reserved.cnt = 0x6 > [ 0.000000] reserved[0x0] [0x0000000009fc00-0x000000000fffff], 0x60400 bytes > [ 0.000000] reserved[0x1] [0x0000000009fff0-0x0000000009ffff], 0x10 bytes > [ 0.000000] reserved[0x2] [0x000000000e1160-0x000000000e1253], 0xf4 bytes > [ 0.000000] reserved[0x3] [0x00000001000000-0x0000000348a6d7], 0x248a6d8 bytes > [ 0.000000] reserved[0x4] [0x0000000348b000-0x0000000348b070], 0x71 bytes > [ 0.000000] reserved[0x5] [0x0000007c59d000-0x0000007fffefff], 0x3a62000 bytes > [ 0.000000] initial memory mapped : 0 - 20000000 > [ 0.000000] Kernel panic - not syncing: Cannot allocate trampoline > [ 0.000000] > [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.37-rc1-tip-yh-02102-g776a022-dirty #276 > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff81cd3f14>] panic+0x91/0x1a3 > [ 0.000000] [<ffffffff82783490>] reserve_trampoline_memory+0x46/0x72 > [ 0.000000] [<ffffffff827801fe>] setup_arch+0x5b0/0xae3 > [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800 > [ 0.000000] [<ffffffff81cd4067>] ? printk+0x41/0x43 > [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800 > [ 0.000000] [<ffffffff8277bb0d>] start_kernel+0xd7/0x3e8 > [ 0.000000] [<ffffffff8277b2cc>] x86_64_start_reservations+0x9c/0xa0 > [ 0.000000] [<ffffffff8277b3e4>] x86_64_start_kernel+0x114/0x11b > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] WARNING: at kernel/lockdep.c:2322 trace_hardirqs_on_caller+0xc3/0x178() > [ 0.000000] Hardware name: VirtualBox > [ 0.000000] Modules linked in: > [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.37-rc1-tip-yh-02102-g776a022-dirty #276 > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff8107bda0>] warn_slowpath_common+0x85/0x9d > [ 0.000000] [<ffffffff81cd3fe1>] ? panic+0x15e/0x1a3 > [ 0.000000] [<ffffffff8107bdd2>] warn_slowpath_null+0x1a/0x1c > [ 0.000000] [<ffffffff810a8e59>] trace_hardirqs_on_caller+0xc3/0x178 > [ 0.000000] [<ffffffff810a8f1b>] trace_hardirqs_on+0xd/0xf > [ 0.000000] [<ffffffff81cd3fe1>] panic+0x15e/0x1a3 > [ 0.000000] [<ffffffff82783490>] reserve_trampoline_memory+0x46/0x72 > [ 0.000000] [<ffffffff827801fe>] setup_arch+0x5b0/0xae3 > [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800 > [ 0.000000] [<ffffffff81cd4067>] ? printk+0x41/0x43 > [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800 > [ 0.000000] [<ffffffff8277bb0d>] start_kernel+0xd7/0x3e8 > [ 0.000000] [<ffffffff8277b2cc>] x86_64_start_reservations+0x9c/0xa0 > [ 0.000000] [<ffffffff8277b3e4>] x86_64_start_kernel+0x114/0x11b > [ 0.000000] ---[ end trace a7919e7f17c0a725 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
