Kdump Fails to Generate vmcore with Error ' page allocation failure'
(Doc ID 2519181.1)
Last updated on DECEMBER 04, 2020
Applies to:
Oracle VM - Version 3.4.4 to 3.4.6 [Release OVM34]Linux x86-64
Symptoms
Service kdump failed to generate vmcore with error below on console:
sysrq: SysRq : Trigger a crash
[ 931.560148] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 931.562887] IP: [<ffffffff81428106>] sysrq_handle_crash+0x16/0x20 ...
[ 931.717166] [<ffffffff81428a51>] __handle_sysrq+0x121/0x180
[ 931.726069] [<ffffffff81428aed>] write_sysrq_trigger+0x3d/0x40
[ 931.734057] [<ffffffff8127bb53>] proc_reg_write+0x43/0x70
[ 931.743756] [<ffffffff8120f204>] __vfs_write+0x34/0x100
[ 931.752101] [<ffffffff8120ff79>] ? __sb_start_write+0x69/0x100
[ 931.762156] [<ffffffff812b5583>] ? security_file_permission+0x23/0x90
[ 931.771454] [<ffffffff8120f48b>] vfs_write+0xab/0x120 ...
[ 931.922004] Kernel panic - not syncing: Fatal exception
[ 931.933703] Kernel Offset: disabled
(XEN) [2018-02-13 03:50:30] Domain 0 crashed: Executing kexec image on cpu1
(XEN) [2018-02-13 03:50:34] Shot down all CPUs
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
...
[ 0.000000] Kernel command line: placeholder root=UUID=7cb0ee13-429c-4952-9875-7439f130f5ff ro rd_NO_LUKS rd_NO_LVM
LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc
KEYTABLE=us rd_NO_DM audit=1 processor.max_cstate=1 intel_idle.max_cstate=0
console=tty0 console=hvc0,9600 noefi acpi_rsdp=0x6c950000 irqpoll maxcpus=1
nr_cpus=1 reset_devices cgroup_disable=memory mce=off selinux=0 nox2apic
console=tty0 console=ttyS0,9600n8 acpi_rsdp=0x6c950000
elfcorehdr=1611591916K kexec_jump_back_entry=0x0000018033c7d041
...
Loading mbcache.ko module
Loading usb-storage.ko module
Waiting 8 seconds for driver initialization.
Loading sd_mod.k[ 68.567433] megasas: 07.701.17.00-rc1 o module
Loadin[ 68.634906] insmod: page allocation failure: order:0, mode:0x24
g megaraid_sas.k[ 68.730003] CPU: 0 PID: 187 Comm: insmod Tainted: G
E 4.1.12-112.14.13.el6uek.x86_64 #2
...
[ 84.543513] [<ffffffff816f2594>] system_call_fastpath+0x12/0xce
[ 84.621668] Kernel Offset: disabled
[ 84.674811] ---[ end Kernel panic - not syncing: Can not allocate SWIOTLB buffer earlier and can't now provide you with the DMA bounce buffer
[It was stuck here]
Changes
Cause
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