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Message #135146
[Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
With crashkernel=145, I get a bit more information :
[ 1.351621] Mem-Info:
[ 1.351897] active_anon:3939 inactive_anon:12 isolated_anon:0
[ 1.351897] active_file:1120 inactive_file:1335 isolated_file:0
[ 1.351897] unevictable:18546 dirty:0 writeback:0 unstable:0
[ 1.351897] slab_reclaimable:2235 slab_unreclaimable:1684
[ 1.351897] mapped:1440 shmem:16 pagetables:248 bounce:0
[ 1.351897] free:472 free_pcp:5 free_cma:0
[ 1.355454] Node 0 DMA free:480kB min:4kB low:4kB high:4kB active_anon:0kB inactive_anon:0kB active_file:0kB ina
ctive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty:
0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:56kB kernel_stack:0kB pagetables:0kB
unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimabl
e? yes
[ 1.359904] lowmem_reserve[]: 0 121 121 121
[ 1.360451] Node 0 DMA32 free:1408kB min:1408kB low:1760kB high:2112kB active_anon:15756kB inactive_anon:48kB ac
tive_file:4480kB inactive_file:5340kB unevictable:74184kB isolated(anon):0kB isolated(file):0kB present:147828kB ma
naged:126836kB mlocked:1716kB dirty:0kB writeback:0kB mapped:5760kB shmem:64kB slab_reclaimable:8940kB slab_unrecla
imable:6680kB kernel_stack:1008kB pagetables:992kB unstable:0kB bounce:0kB free_pcp:20kB local_pcp:20kB free_cma:0k
B writeback_tmp:0kB pages_scanned:72640 all_unreclaimable? yes
[ 1.365436] lowmem_reserve[]: 0 0 0 0
[ 1.365914] Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0*
2048kB 0*4096kB = 472kB
[ 1.367484] Node 0 DMA32: 2*4kB (UM) 1*8kB (U) 1*16kB (M) 3*32kB (UEM) 0*64kB 2*128kB (EM) 2*256kB (UE) 1*512kB
(U) 0*1024kB 0*2048kB 0*4096kB = 1408kB
[ 1.369238] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1.370177] 20930 total pagecache pages
[ 1.370604] 0 pages in swap cache
[ 1.370984] Swap cache stats: add 0, delete 0, find 0/0
[ 1.371563] Free swap = 0kB
[ 1.371887] Total swap = 0kB
[ 1.372222] 37115 pages RAM
[ 1.372542] 0 pages HighMem/MovableOnly
[ 1.372970] 5269 pages reserved
[ 1.373322] 0 pages cma reserved
[ 1.373684] 0 pages hwpoisoned
[ 1.374028] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1.374968] [ 97] 0 97 1169 217 8 3 0 0 udev
[ 1.375899] [ 99] 0 99 6870 791 17 3 0 -1000 systemd-udevd
[ 1.376932] [ 105] 0 105 6612 641 18 3 0 0 udevadm
[ 1.377895] [ 106] 0 106 6738 774 16 3 0 0 systemd-udevd
[ 1.378920] [ 107] 0 107 6804 818 16 3 0 0 systemd-udevd
[ 1.379934] [ 108] 0 108 6804 848 17 3 0 0 systemd-udevd
[ 1.380967] [ 109] 0 109 6804 821 16 3 0 0 systemd-udevd
[ 1.381990] [ 110] 0 110 6804 843 16 3 0 0 systemd-udevd
[ 1.383012] [ 111] 0 111 6804 834 16 3 0 0 systemd-udevd
[ 1.384041] [ 112] 0 112 6804 844 16 3 0 0 systemd-udevd
[ 1.385088] [ 113] 0 113 6804 781 16 3 0 0 systemd-udevd
[ 1.386101] [ 114] 0 114 6837 868 16 3 0 0 systemd-udevd
[ 1.387123] [ 115] 0 115 6837 860 16 3 0 0 systemd-udevd
[ 1.388149] [ 119] 0 119 1091 188 7 3 0 0 watershed
[ 1.389136] [ 120] 0 120 1169 187 8 3 0 0 sh
[ 1.390052] [ 125] 0 125 9139 3657 23 3 0 0 lvm
[ 1.390980] Out of memory: Kill process 125 (lvm) score 112 or sacrifice child
[ 1.391774] Killed process 125 (lvm) total-vm:36556kB, anon-rss:10924kB, file-rss:3704kB
Begin: Loading essential drivers ... done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
Begin: Running /scripts/local-premount ... [ 1.732082] tsc: Refined TSC clocksource calibration: 3300.116 MHz
[ 1.732786] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2f91ba40ab4, max_idle_ns: 440795353086 ns
done.
Gave up waiting for root device. Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait long enough?)
- Check root= (did the system wait for the right device?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/mapper/VividS--vg-root does not exist. Dropping to a shell!
[ 36.491059] hidraw: raw HID events driver (C) Jiri Kosina
BusyBox v1.22.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs)
The tipping point seems to be at 146M which works. 145M doesn't
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https://bugs.launchpad.net/bugs/1496317
Title:
kexec fails with OOM killer with the current crashkernel=128 value
Status in kexec-tools package in Ubuntu:
Confirmed
Bug description:
With a very basic Wily image, just trigger a crash with sysrq-trigger
after installing and setting up linux-crashdump and the kexec will
fail with the following :
[ 0.334592] Trying to unpack rootfs image as initramfs...
[ 0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0
[ 0.650332] swapper/0 cpuset=/ mems_allowed=0
[ 0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 4.2.0-7-generic #7-Ubuntu
[ 0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.652691] ffff88002fd906c8 ffff88002fcf76a8 ffffffff817b0465 000000000000000f
[ 0.653556] ffff88002fd90000 ffff88002fcf7738 ffffffff817ae2b5 ffff88002ffc0e28
[ 0.654418] ffff880033c164c0 ffff880033c16530 ffff88002fd90068 ffff88002fcf7748
...
[ 0.682339] Mem-Info: [756/1897]
[ 0.682599] active_anon:0 inactive_anon:0 isolated_anon:0
[ 0.682599] active_file:2023 inactive_file:0 isolated_file:0
[ 0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0
[ 0.682599] slab_reclaimable:1722 slab_unreclaimable:632
[ 0.682599] mapped:0 shmem:0 pagetables:0 bounce:0
[ 0.682599] free:0 free_pcp:2 free_cma:0
[ 0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact
ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty:
0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB
unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab
le? yes
[ 0.690450] lowmem_reserve[]: 0 0 0 0
[ 0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB
inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke
d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4
64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned
:58840 all_unreclaimable? yes
[ 0.695547] lowmem_reserve[]: 0 0 0 0
[ 0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k
B
[ 0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =
0kB
[ 0.698641] 16868 total pagecache pages
[ 0.699075] 0 pages in swap cache
[ 0.699448] Swap cache stats: add 0, delete 0, find 0/0
[ 0.700029] Free swap = 0kB
[ 0.700356] Total swap = 0kB
[ 0.700679] 32763 pages RAM
[ 0.700991] 0 pages HighMem/MovableOnly
[ 0.701418] 13110 pages reserved
[ 0.701778] 0 pages cma reserved
[ 0.702139] 0 pages hwpoisoned
[ 0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 0.703423] Kernel panic - not syncing: Out of memory and no killable processes...
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References
