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IDProjectCategoryView StatusDate SubmittedLast Update
0018342CentOS-7kernelpublic2021-10-29 04:152021-10-29 04:15
Reporterabhay2101 Assigned To 
PriorityurgentSeveritymajorReproducibilityalways
Status newResolutionopen 
Platformx86_64OSCentos7OS Version7.9.2009
Product Version7.9.2009 
Summary0018342: hung_task_panic reboot doesn't come back and system becomes unusable
Descriptionwith recent release whenever hung_task_panic reboots the machine then system doesn't comeback clean and we see kernel error while fresh boot.

powercycle using console will reset it. We can reproduce this always



[ 5.618133] PTP clock support registered
[ 5.685854] usb 1-1.6: New USB device found, idVendor=413c, idProduct=a001, bcdDevice= 0.00
[ 5.695181] usb 1-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 5.703341] usb 1-1.6: Product: Gadget USB HUB
[ 5.708303] usb 1-1.6: Manufacturer: no manufacturer
[ 5.713846] usb 1-1.6: SerialNumber: 0123456789
[ 5.802968] hub 1-1.6:1.0: USB hub found
[ 5.807542] megasas: 07.714.04.00-rh1
[ 5.827615] tg3.c:v3.137 (May 11, 2014)
[ 5.849219] hub 1-1.6:1.0: 6 ports detected
[ 5.856888] systemd invoked oom-killer: gfp_mask=0x200da, order=0, oom_score_adj=0
[ 5.865339] systemd cpuset=/ mems_allowed=0
[ 5.870009] CPU: 0 PID: 226 Comm: systemd Not tainted 3.10.0-1160.42.2.el7.x86_64 #1
[ 5.878642] Hardware name: Dell Inc. PowerEdge R430/0HFG24, BIOS 2.11.0 12/23/2019
[ 5.887088] Call Trace:
[ 5.889820] [<ffffffff96983539>] dump_stack+0x19/0x1b
[ 5.895556] [<ffffffff9697e5d8>] dump_header+0x90/0x229
[ 5.901486] [<ffffffff9650f1bb>] ? cred_has_capability+0x6b/0x120
[ 5.908376] [<ffffffff963c254d>] oom_kill_process+0x2cd/0x490
[ 5.914886] [<ffffffff9650f29e>] ? selinux_capable+0x2e/0x40
[ 5.921298] [<ffffffff963c2c3a>] out_of_memory+0x31a/0x500
[ 5.927518] [<ffffffff963c9854>] __alloc_pages_nodemask+0xad4/0xbe0
[ 5.934611] [<ffffffff9641cc49>] alloc_pages_vma+0xa9/0x200
[ 5.940928] [<ffffffff963ef98b>] wp_page_copy.isra.73+0xbb/0x5b0
[ 5.947729] [<ffffffff963f202b>] do_wp_page+0xfb/0x720
[ 5.953560] [<ffffffff963be42b>] ? unlock_page+0x2b/0x30
[ 5.959586] [<ffffffff963eee49>] ? do_read_fault.isra.63+0x139/0x1b0
[ 5.966773] [<ffffffff963f66a2>] handle_mm_fault+0xb22/0xfb0
[ 5.973185] [<ffffffff962e4807>] ? update_curr+0x127/0x1e0
[ 5.979404] [<ffffffff96990653>] __do_page_fault+0x213/0x500
[ 5.985817] [<ffffffff96990975>] do_page_fault+0x35/0x90
[ 5.991840] [<ffffffff9698c778>] page_fault+0x28/0x30
[ 5.997573] Mem-Info:
[ 6.000108] active_anon:4044 inactive_anon:5830 isolated_anon:0
[ 6.000108] active_file:0 inactive_file:0 isolated_file:0
[ 6.000108] unevictable:0 dirty:0 writeback:0 unstable:0
[ 6.000108] slab_reclaimable:1974 slab_unreclaimable:6288
[ 6.000108] mapped:1251 shmem:7556 pagetables:351 bounce:0
[ 6.000108] free:357 free_pcp:5 free_cma:0
[ 6.035802] Node 0 DMA free:304kB min:4kB low:4kB high:4kB active_anon:156kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:568kB managed:484kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB 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:0 all_unreclaimable? yes
[ 6.081302] lowmem_reserve[]: 0 77 77 77
[ 6.085724] Node 0 DMA32 free:1124kB min:1124kB low:1404kB high:1684kB active_anon:16020kB inactive_anon:23320kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:171456kB managed:82644kB mlocked:0kB dirty:0kB writeback:0kB mapped:5004kB shmem:30224kB slab_reclaimable:7896kB slab_unreclaimable:25152kB kernel_stack:976kB pagetables:1404kB unstable:0kB bounce:0kB free_pcp:20kB local_pcp:20kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
[ 6.135490] lowmem_reserve[]: 0 0 0 0
[ 6.139616] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 0*16kB 1*32kB (U) 0*64kB 2*128kB (UM) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 304kB
[ 6.153174] Node 0 DMA32: 1*4kB (U) 0*8kB 2*16kB (U) 4*32kB (UM) 3*64kB (UM) 2*128kB (UM) 2*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1124kB
[ 6.167917] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 6.177626] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 6.187042] 7556 total pagecache pages
[ 6.191224] 0 pages in swap cache
[ 6.194919] Swap cache stats: add 0, delete 0, find 0/0
[ 6.200747] Free swap = 0kB
[ 6.203958] Total swap = 0kB
[ 6.207169] 43006 pages RAM
[ 6.210282] 0 pages HighMem/MovableOnly
[ 6.214558] 22224 pages reserved
[ 6.218158] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
[ 6.226897] [ 81] 0 81 8741 597 22 0 0 systemd-journal
[ 6.236703] [ 147] 0 147 8799 475 22 0 -1000 systemd-udevd
[ 6.246313] [ 199] 0 199 8857 424 22 0 0 systemd-udevd
[ 6.255923] [ 200] 0 200 10916 462 23 0 0 systemd-udevd
[ 6.265533] [ 201] 0 201 10917 455 23 0 0 systemd-udevd
[ 6.275145] [ 202] 0 202 11041 661 25 0 0 systemd-udevd
[ 6.284756] [ 203] 0 203 8862 416 22 0 0 systemd-udevd
[ 6.294366] [ 204] 0 204 8863 416 22 0 0 systemd-udevd
[ 6.303978] [ 205] 0 205 8863 417 22 0 0 systemd-udevd
[ 6.313587] [ 206] 0 206 8864 417 22 0 0 systemd-udevd
[ 6.323198] [ 207] 0 207 8766 288 21 0 0 systemd-udevd
[ 6.332808] [ 208] 0 208 10847 344 23 0 0 systemd-udevd
[ 6.342418] [ 213] 0 213 3023 485 11 0 0 dracut-initqueu
[ 6.352225] [ 225] 0 225 7802 349 21 0 0 systemctl
[ 6.361448] [ 226] 0 226 10735 188 25 0 0 systemd
[ 6.370478] Out of memory: Kill process 202 (systemd-udevd) score 32 or sacrifice child
[ 6.379410] Killed process 202 (systemd-udevd), UID 0, total-vm:44164kB, anon-rss:1744kB, file-rss:4kB, shmem-rss:896kB
[ 6.509446] megaraid_sas 0000:01:00.0: Waiting for FW to come to ready state
[ 6.517322] megaraid_sas 0000:01:00.0: megasas_disable_intr_fusion is called outbound_intr_mask:0x40000009
[ 6.565980] megaraid_sas 0000:01:00.0: FW now in Ready state
[ 6.572299] megaraid_sas 0000:01:00.0: 63 bit DMA mask and 32 bit consistent mask
[ 6.581498] systemd-udevd invoked oom-killer: gfp_mask=0x280da, order=0, oom_score_adj=0
[ 6.590532] systemd-udevd cpuset=/ mems_allowed=0
[ 6.595773] CPU: 0 PID: 201 Comm: systemd-udevd Not tainted
Steps To Reproduceforce file system hung so that task panic should kickin

# fsfreeze --freeze /path/to/mountpoint
# echo crap > /path/to/mountpoint/file
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Date Modified Username Field Change
2021-10-29 04:15 abhay2101 New Issue