[5.0.0-next-20190306] [powerpc] kernel BUG at mm/page_alloc.c:3124 while running stress

Sachin Sant sachinp at linux.vnet.ibm.com
Thu Mar 7 19:09:30 AEDT 2019


While running stress test from avocado-misc-test against next-20190306 (SHA: cf08baa296)
on a POWER9 LPAR ran into following kernel bug followed by panic.
next-20190305 was good.

 (1/1) avocado-misc-tests/perf/stress.py:Stress.test:  [  947.743425] request_module: kmod_concurrent_max (0) close to 0 (max_modprobes: 50), for module net-pf-2-proto-33-type-6, throttling...
[ 2873.201865] ------------[ cut here ]------------
[ 2873.201907] kernel BUG at mm/page_alloc.c:3124!
[ 2873.201918] Oops: Exception in kernel mode, sig: 5 [#1]
[ 2873.201928] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries
[ 2873.201950] Dumping ftrace buffer:
[ 2873.201997]    (ftrace buffer empty)
[ 2873.202005] Modules linked in: unix_diag ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat ip6table_mangle ip6table_raw iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_mangle iptable_raw ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc sg uio_pdrv_genirq uio pseries_rng ip_tables ext4 mbcache jbd2 sr_mod cdrom sd_mod ibmvscsi scsi_transport_srp ibmveth dm_mirror dm_region_hash dm_log dm_mod
[ 2873.202108] CPU: 17 PID: 180 Comm: kcompactd1 Not tainted 5.0.0-next-20190306-autotest #1
[ 2873.202119] NIP:  c000000000327320 LR: c0000000002f1c10 CTR: c0000000002f1840
[ 2873.202131] REGS: c000000458eeb640 TRAP: 0700   Not tainted  (5.0.0-next-20190306-autotest)
[ 2873.202140] MSR:  8000000102029033 <SF,VEC,EE,ME,IR,DR,RI,LE,TM[E]>  CR: 24882088  XER: 20040000
[ 2873.202161] CFAR: c0000000002f1c0c IRQMASK: 1 
[ 2873.202161] GPR00: c0000000002f1c10 c000000458eeb8d0 c0000000012b9500 c0000008bff1cb58 
[ 2873.202161] GPR04: 0000000000000005 0000000000000308 c0000008bff1cc98 0000000000000780 
[ 2873.202161] GPR08: c000000001478220 0000000000000001 0000000000000000 0000000000000000 
[ 2873.202161] GPR12: 0000000024884082 c00000001ec54280 000000000006fd50 0000000000069b00 
[ 2873.202161] GPR16: 000000000007ad00 0000000000000035 ff40000022ffc700 0000000000000040 
[ 2873.202161] GPR20: c0000008bff1cc88 c0000008bff1cb58 0000000000000000 0000000000000000 
[ 2873.202161] GPR24: 0000000000000001 0000000000000000 0000000000000000 0000000000000005 
[ 2873.202161] GPR28: c0000008bff1c980 0000000000000000 0000000000000001 c0000008bff1cb58 
[ 2873.202251] NIP [c000000000327320] __isolate_free_page+0x90/0x2c0
[ 2873.202263] LR [c0000000002f1c10] compaction_alloc+0x3d0/0xae0
[ 2873.202271] Call Trace:
[ 2873.202280] [c000000458eeb8d0] [f0000000011d9800] 0xf0000000011d9800 (unreliable)
[ 2873.202293] [c000000458eeb940] [c0000000002f1c10] compaction_alloc+0x3d0/0xae0
[ 2873.202305] [c000000458eeba20] [c00000000036cd5c] unmap_and_move+0x7c/0x9a0
[ 2873.202315] [c000000458eeba90] [c00000000036ef14] migrate_pages+0x224/0x870
[ 2873.202326] [c000000458eebb60] [c0000000002f3c9c] compact_zone+0x3ac/0x1020
[ 2873.202336] [c000000458eebc60] [c0000000002f4de8] kcompactd_do_work+0x188/0x350
[ 2873.202347] [c000000458eebd40] [c0000000002f5068] kcompactd+0xb8/0x2a0
[ 2873.202359] [c000000458eebdb0] [c0000000001429d0] kthread+0x160/0x1a0
[ 2873.202371] [c000000458eebe20] [c00000000000b64c] ret_from_kernel_thread+0x5c/0x70
[ 2873.202380] Instruction dump:
[ 2873.202388] 3d02001c 3908ed20 78e71f24 794a57a0 6d29f000 1f4a0680 7d290034 7f28382a 
[ 2873.202401] 5529d97e 79290020 7fb9d214 69290001 <0b090000> 3fc2001b 3bde92b8 38a00002 
[ 2873.202418] ---[ end trace 65562a20cc8f8bc8 ]—

Have attached the console logs.

Thanks
-Sachin

-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: next-20190306.txt
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20190307/e4bb7931/attachment-0001.txt>


More information about the Linuxppc-dev mailing list