| Message ID | 1357700082.27446.11.camel@edumazet-glaptop |
|---|---|
| State | RFC, archived |
| Delegated to: | David Miller |
| Headers | show |
Eric Dumazet <erdnetdev@gmail.com> wrote: > On Tue, 2013-01-08 at 18:32 -0800, Eric Dumazet wrote: > > Hmm, it seems sk_filter() can return -ENOMEM because skb has the > > pfmemalloc() set. > > > > > One TCP socket keeps retransmitting an SKB via loopback, and TCP stack > > drops the packet again and again. > > sock_init_data() sets sk->sk_allocation to GFP_KERNEL > > Shouldnt it use (GFP_KERNEL | __GFP_NOMEMALLOC) instead ? Thanks, things are running good after ~35 minutes so far. Will report back if things break (hopefully I don't run out of laptop battery power :x). I'm now getting allocation failure warnings (which I don't believe happened before, and should be expected, I think...) kworker/1:1: page allocation failure: order:0, mode:0x20 Pid: 236, comm: kworker/1:1 Not tainted 3.8.0-rc2w5+ #76 Call Trace: <IRQ> [<ffffffff810a2411>] warn_alloc_failed+0xe1/0x130 [<ffffffff810a5779>] __alloc_pages_nodemask+0x5e9/0x840 [<ffffffff8133df8d>] ? ip_rcv+0x24d/0x340 [<ffffffff811f35b3>] ? sg_init_table+0x23/0x50 [<ffffffffa002162a>] get_a_page.isra.25+0x3a/0x40 [virtio_net] [<ffffffffa0022258>] try_fill_recv+0x318/0x4a0 [virtio_net] [<ffffffffa00227bd>] virtnet_poll+0x3dd/0x610 [virtio_net] [<ffffffff8131767d>] net_rx_action+0x9d/0x1a0 [<ffffffff8104284a>] __do_softirq+0xba/0x170 [<ffffffff813b199c>] call_softirq+0x1c/0x30 <EOI> [<ffffffff8100c61d>] do_softirq+0x6d/0xa0 [<ffffffff81042424>] local_bh_enable+0x94/0xa0 [<ffffffff813aed45>] __cond_resched_softirq+0x35/0x50 [<ffffffff81305e7c>] release_sock+0x9c/0x150 [<ffffffff8134b90e>] tcp_sendmsg+0x11e/0xd80 [<ffffffff81370cee>] inet_sendmsg+0x5e/0xa0 [<ffffffff81300a77>] sock_sendmsg+0x87/0xa0 [<ffffffff810a48c9>] ? __free_memcg_kmem_pages+0x9/0x10 [<ffffffff81067819>] ? select_task_rq_fair+0x699/0x6b0 [<ffffffff81300acb>] kernel_sendmsg+0x3b/0x50 [<ffffffffa0052dc9>] xs_send_kvec+0x89/0xa0 [sunrpc] [<ffffffffa00534bf>] xs_sendpages+0x5f/0x1e0 [sunrpc] [<ffffffff81047d63>] ? lock_timer_base.isra.32+0x33/0x60 [<ffffffffa00548e7>] xs_tcp_send_request+0x57/0x110 [sunrpc] [<ffffffffa0051c0d>] xprt_transmit+0x6d/0x260 [sunrpc] [<ffffffffa004f108>] call_transmit+0x1a8/0x240 [sunrpc] [<ffffffffa0056316>] __rpc_execute+0x56/0x250 [sunrpc] [<ffffffffa0056535>] rpc_async_schedule+0x25/0x40 [sunrpc] [<ffffffff810515cc>] process_one_work+0x12c/0x480 [<ffffffffa0056510>] ? __rpc_execute+0x250/0x250 [sunrpc] [<ffffffff810538ad>] worker_thread+0x15d/0x460 [<ffffffff81053750>] ? flush_delayed_work+0x60/0x60 [<ffffffff8105865b>] kthread+0xbb/0xc0 [<ffffffff810585a0>] ? kthread_create_on_node+0x120/0x120 [<ffffffff813b063c>] ret_from_fork+0x7c/0xb0 [<ffffffff810585a0>] ? kthread_create_on_node+0x120/0x120 Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 0 CPU 1: hi: 186, btch: 31 usd: 0 active_anon:3620 inactive_anon:3624 isolated_anon:0 active_file:4290 inactive_file:101218 isolated_file:0 unevictable:0 dirty:2306 writeback:0 unstable:0 free:1711 slab_reclaimable:1529 slab_unreclaimable:5796 mapped:2325 shmem:66 pagetables:759 bounce:0 free_cma:0 DMA free:2012kB min:84kB low:104kB high:124kB active_anon:0kB inactive_anon:0kB active_file:4kB inactive_file:13624kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:244kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:16kB slab_unreclaimable:80kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 488 488 488 DMA32 free:4832kB min:2784kB low:3480kB high:4176kB active_anon:14480kB inactive_anon:14496kB active_file:17156kB inactive_file:391248kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:499960kB managed:491256kB mlocked:0kB dirty:8980kB writeback:0kB mapped:9300kB shmem:264kB slab_reclaimable:6100kB slab_unreclaimable:23104kB kernel_stack:1336kB pagetables:3036kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 2*4kB (U) 1*8kB (R) 1*16kB (U) 0*32kB 1*64kB (R) 1*128kB (R) 1*256kB (R) 1*512kB (R) 1*1024kB (R) 0*2048kB 0*4096kB = 2016kB DMA32: 207*4kB (UEM) 116*8kB (UEM) 32*16kB (UM) 58*32kB (UM) 13*64kB (UM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4956kB 108890 total pagecache pages 3302 pages in swap cache Swap cache stats: add 4086, delete 784, find 494/535 Free swap = 378980kB Total swap = 392188kB 131054 pages RAM 3820 pages reserved 541743 pages shared 117221 pages non-shared cat: page allocation failure: order:0, mode:0x20 Pid: 23684, comm: cat Not tainted 3.8.0-rc2w5+ #76 Call Trace: <IRQ> [<ffffffff810a2411>] warn_alloc_failed+0xe1/0x130 [<ffffffff810a5779>] __alloc_pages_nodemask+0x5e9/0x840 [<ffffffff8133df8d>] ? ip_rcv+0x24d/0x340 [<ffffffff811f35b3>] ? sg_init_table+0x23/0x50 [<ffffffffa002162a>] get_a_page.isra.25+0x3a/0x40 [virtio_net] [<ffffffffa0022258>] try_fill_recv+0x318/0x4a0 [virtio_net] [<ffffffffa00227bd>] virtnet_poll+0x3dd/0x610 [virtio_net] [<ffffffff8131767d>] net_rx_action+0x9d/0x1a0 [<ffffffff8104284a>] __do_softirq+0xba/0x170 [<ffffffff813b199c>] call_softirq+0x1c/0x30 [<ffffffff8100c61d>] do_softirq+0x6d/0xa0 [<ffffffff81042a75>] irq_exit+0xa5/0xb0 [<ffffffff8100c25e>] do_IRQ+0x5e/0xd0 [<ffffffff813afe2d>] common_interrupt+0x6d/0x6d <EOI> [<ffffffff813af82c>] ? _raw_spin_unlock_irqrestore+0xc/0x20 [<ffffffff810a91b6>] pagevec_lru_move_fn+0xb6/0xe0 [<ffffffff810a8780>] ? compound_unlock_irqrestore+0x20/0x20 [<ffffffffa00acd30>] ? nfs_read_completion+0x190/0x190 [nfs] [<ffffffff810a91f7>] __pagevec_lru_add+0x17/0x20 [<ffffffff810a95c8>] __lru_cache_add+0x68/0x90 [<ffffffff8109e869>] add_to_page_cache_lru+0x29/0x40 [<ffffffff810a80cc>] read_cache_pages+0x6c/0x100 [<ffffffffa00ad4dc>] nfs_readpages+0xcc/0x160 [nfs] [<ffffffff810a7f57>] __do_page_cache_readahead+0x1c7/0x280 [<ffffffff810a827c>] ra_submit+0x1c/0x20 [<ffffffff810a83ad>] ondemand_readahead+0x12d/0x250 [<ffffffff8109f37d>] ? __generic_file_aio_write+0x1bd/0x3c0 [<ffffffff810a8550>] page_cache_async_readahead+0x80/0xa0 [<ffffffff8109e0b8>] ? find_get_page+0x28/0xd0 [<ffffffff8109fb73>] generic_file_aio_read+0x503/0x6c0 [<ffffffffa00a4231>] nfs_file_read+0x91/0xb0 [nfs] [<ffffffff810e4477>] do_sync_read+0xa7/0xe0 [<ffffffff810e4b50>] vfs_read+0xa0/0x160 [<ffffffff810e4c5d>] sys_read+0x4d/0x90 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 86 CPU 1: hi: 186, btch: 31 usd: 167 active_anon:2376 inactive_anon:2431 isolated_anon:0 active_file:3712 inactive_file:103686 isolated_file:17 unevictable:0 dirty:646 writeback:0 unstable:0 free:807 slab_reclaimable:1485 slab_unreclaimable:5873 mapped:2343 shmem:66 pagetables:791 bounce:0 free_cma:0 DMA free:2032kB min:84kB low:104kB high:124kB active_anon:0kB inactive_anon:0kB active_file:24kB inactive_file:12916kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:0kB writeback:0kB mapped:12kB shmem:0kB slab_reclaimable:16kB slab_unreclaimable:124kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 488 488 488 DMA32 free:1196kB min:2784kB low:3480kB high:4176kB active_anon:9504kB inactive_anon:9724kB active_file:14824kB inactive_file:401828kB unevictable:0kB isolated(anon):0kB isolated(file):68kB present:499960kB managed:491256kB mlocked:0kB dirty:2588kB writeback:0kB mapped:9360kB shmem:264kB slab_reclaimable:5924kB slab_unreclaimable:23368kB kernel_stack:1336kB pagetables:3164kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 11*4kB (MR) 1*8kB (R) 0*16kB 2*32kB (R) 4*64kB (R) 3*128kB (R) 1*256kB (R) 0*512kB 1*1024kB (R) 0*2048kB 0*4096kB = 2036kB DMA32: 40*4kB (UEM) 28*8kB (UM) 22*16kB (UEM) 5*32kB (UM) 5*64kB (UM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1216kB 108199 total pagecache pages 714 pages in swap cache Swap cache stats: add 4829, delete 4115, find 583/626 Free swap = 376280kB Total swap = 392188kB 131054 pages RAM 3820 pages reserved 542491 pages shared 117305 pages non-shared cat: page allocation failure: order:0, mode:0x20 Pid: 24171, comm: cat Not tainted 3.8.0-rc2w5+ #76 Call Trace: <IRQ> [<ffffffff810a2411>] warn_alloc_failed+0xe1/0x130 [<ffffffff8137871e>] ? fib_table_lookup+0x26e/0x2d0 [<ffffffff810a5779>] __alloc_pages_nodemask+0x5e9/0x840 [<ffffffff8130a6c0>] __netdev_alloc_frag+0xa0/0x150 [<ffffffff8130d9d2>] __netdev_alloc_skb+0x82/0xe0 [<ffffffffa00225b7>] virtnet_poll+0x1d7/0x610 [virtio_net] [<ffffffff8131767d>] net_rx_action+0x9d/0x1a0 [<ffffffff8104284a>] __do_softirq+0xba/0x170 [<ffffffff813b199c>] call_softirq+0x1c/0x30 [<ffffffff8100c61d>] do_softirq+0x6d/0xa0 [<ffffffff81042a75>] irq_exit+0xa5/0xb0 [<ffffffff8100c25e>] do_IRQ+0x5e/0xd0 [<ffffffff813afe2d>] common_interrupt+0x6d/0x6d <EOI> [<ffffffff813aeeb5>] ? io_schedule+0xa5/0xd0 [<ffffffff811ef000>] ? copy_user_generic_string+0x30/0x40 [<ffffffff8109db32>] ? __lock_page_killable+0x62/0x70 [<ffffffff8109da85>] ? file_read_actor+0x135/0x180 [<ffffffff8109f950>] generic_file_aio_read+0x2e0/0x6c0 [<ffffffffa00a4231>] nfs_file_read+0x91/0xb0 [nfs] [<ffffffff810e4477>] do_sync_read+0xa7/0xe0 [<ffffffff810e4b50>] vfs_read+0xa0/0x160 [<ffffffff810e4c5d>] sys_read+0x4d/0x90 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 50 CPU 1: hi: 186, btch: 31 usd: 30 active_anon:2367 inactive_anon:2431 isolated_anon:0 active_file:3719 inactive_file:103732 isolated_file:0 unevictable:0 dirty:1302 writeback:0 unstable:0 free:754 slab_reclaimable:1589 slab_unreclaimable:5896 mapped:2343 shmem:66 pagetables:781 bounce:0 free_cma:0 DMA free:1980kB min:84kB low:104kB high:124kB active_anon:0kB inactive_anon:0kB active_file:24kB inactive_file:9704kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:84kB writeback:0kB mapped:12kB shmem:0kB slab_reclaimable:16kB slab_unreclaimable:180kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 488 488 488 DMA32 free:1036kB min:2784kB low:3480kB high:4176kB active_anon:9468kB inactive_anon:9724kB active_file:14852kB inactive_file:405224kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:499960kB managed:491256kB mlocked:0kB dirty:5124kB writeback:0kB mapped:9360kB shmem:264kB slab_reclaimable:6340kB slab_unreclaimable:23404kB kernel_stack:1368kB pagetables:3124kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 34*4kB (UR) 23*8kB (UMR) 40*16kB (UMR) 2*32kB (UM) 1*64kB (R) 1*128kB (R) 1*256kB (R) 1*512kB (R) 0*1024kB 0*2048kB 0*4096kB = 1984kB DMA32: 1*4kB (U) 33*8kB (UEM) 8*16kB (UM) 4*32kB (UM) 8*64kB (UM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1036kB 108257 total pagecache pages 712 pages in swap cache Swap cache stats: add 4829, delete 4117, find 585/628 Free swap = 376288kB Total swap = 392188kB 131054 pages RAM 3820 pages reserved 280574 pages shared 116800 pages non-shared
Eric Wong <normalperson@yhbt.net> wrote: > Eric Dumazet <erdnetdev@gmail.com> wrote: > > On Tue, 2013-01-08 at 18:32 -0800, Eric Dumazet wrote: > > > Hmm, it seems sk_filter() can return -ENOMEM because skb has the > > > pfmemalloc() set. > > > > > > > > One TCP socket keeps retransmitting an SKB via loopback, and TCP stack > > > drops the packet again and again. > > > > sock_init_data() sets sk->sk_allocation to GFP_KERNEL > > > > Shouldnt it use (GFP_KERNEL | __GFP_NOMEMALLOC) instead ? > > Thanks, things are running good after ~35 minutes so far. > Will report back if things break (hopefully I don't run out > of laptop battery power :x). Oops, I had to restart my test :x. However, I was able to reproduce the issue very quickly again with your patch. I've double-checked I'm booting into the correct kernel, but I do have more load on this laptop host now, so maybe that made it happen more quickly... -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Eric Wong <normalperson@yhbt.net> wrote: > Oops, I had to restart my test :x. However, I was able to reproduce the > issue very quickly again with your patch. I've double-checked I'm > booting into the correct kernel, but I do have more load on this > laptop host now, so maybe that made it happen more quickly... Oops, I forgot to include the debugging output. (Is this information still useful to you guys?) 2724 process stuck! ===> /proc/vmstat <=== nr_free_pages 2401 nr_inactive_anon 3242 nr_active_anon 3044 nr_inactive_file 103091 nr_active_file 4305 nr_unevictable 0 nr_mlock 0 nr_anon_pages 6204 nr_mapped 2332 nr_file_pages 107533 nr_dirty 144 nr_writeback 0 nr_slab_reclaimable 1440 nr_slab_unreclaimable 5202 nr_page_table_pages 773 nr_kernel_stack 167 nr_unstable 0 nr_bounce 0 nr_vmscan_write 0 nr_vmscan_immediate_reclaim 0 nr_writeback_temp 0 nr_isolated_anon 0 nr_isolated_file 0 nr_shmem 115 nr_dirtied 340718 nr_written 4979 nr_anon_transparent_hugepages 0 nr_free_cma 0 nr_dirty_threshold 22904 nr_dirty_background_threshold 11452 pgpgin 43068 pgpgout 20484 pswpin 0 pswpout 0 pgalloc_dma 57018 pgalloc_dma32 9428296 pgalloc_normal 0 pgalloc_movable 0 pgfree 9488417 pgactivate 5151 pgdeactivate 3251 pgfault 751069 pgmajfault 272 pgrefill_dma 115 pgrefill_dma32 3136 pgrefill_normal 0 pgrefill_movable 0 pgsteal_kswapd_dma 2865 pgsteal_kswapd_dma32 209744 pgsteal_kswapd_normal 0 pgsteal_kswapd_movable 0 pgsteal_direct_dma 568 pgsteal_direct_dma32 31692 pgsteal_direct_normal 0 pgsteal_direct_movable 0 pgscan_kswapd_dma 2865 pgscan_kswapd_dma32 210678 pgscan_kswapd_normal 0 pgscan_kswapd_movable 0 pgscan_direct_dma 568 pgscan_direct_dma32 31760 pgscan_direct_normal 0 pgscan_direct_movable 0 pgscan_direct_throttle 0 pginodesteal 0 slabs_scanned 0 kswapd_inodesteal 0 kswapd_low_wmark_hit_quickly 666 kswapd_high_wmark_hit_quickly 2 kswapd_skip_congestion_wait 0 pageoutrun 3135 allocstall 566 pgrotated 2 pgmigrate_success 348 pgmigrate_fail 0 compact_migrate_scanned 335538 compact_free_scanned 144705 compact_isolated 11328 compact_stall 451 compact_fail 279 compact_success 172 unevictable_pgs_culled 1064 unevictable_pgs_scanned 0 unevictable_pgs_rescued 1632 unevictable_pgs_mlocked 1632 unevictable_pgs_munlocked 1632 unevictable_pgs_cleared 0 unevictable_pgs_stranded 0 thp_fault_alloc 0 thp_fault_fallback 0 thp_collapse_alloc 0 thp_collapse_alloc_failed 0 thp_split 0 thp_zero_page_alloc 0 thp_zero_page_alloc_failed 0 ===> 2724[2724]/stack <=== [<ffffffff81077300>] futex_wait_queue_me+0xc0/0xf0 [<ffffffff81077a9d>] futex_wait+0x17d/0x280 [<ffffffff8107988c>] do_futex+0x11c/0xae0 [<ffffffff8107a2d8>] sys_futex+0x88/0x180 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2725]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2726]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2727]/stack <=== [<ffffffff81310078>] sk_stream_wait_memory+0x1b8/0x250 [<ffffffff8134be87>] tcp_sendmsg+0x697/0xd80 [<ffffffff81370cee>] inet_sendmsg+0x5e/0xa0 [<ffffffff81300a77>] sock_sendmsg+0x87/0xa0 [<ffffffff81303a59>] sys_sendto+0x119/0x160 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2728]/stack <=== [<ffffffff810400b8>] do_wait+0x1f8/0x220 [<ffffffff81040ea0>] sys_wait4+0x70/0xf0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2773]/stack <=== [<ffffffff81077300>] futex_wait_queue_me+0xc0/0xf0 [<ffffffff81077a9d>] futex_wait+0x17d/0x280 [<ffffffff8107988c>] do_futex+0x11c/0xae0 [<ffffffff8107a2d8>] sys_futex+0x88/0x180 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2774]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2775]/stack <=== [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2776]/stack <=== [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2777]/stack <=== [<ffffffff8105d02c>] hrtimer_nanosleep+0x9c/0x150 [<ffffffff8105d13e>] sys_nanosleep+0x5e/0x80 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff SysRq : Show Memory Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 72 CPU 1: hi: 186, btch: 31 usd: 100 active_anon:3130 inactive_anon:3283 isolated_anon:0 active_file:4305 inactive_file:101390 isolated_file:0 unevictable:0 dirty:103 writeback:0 unstable:0 free:3675 slab_reclaimable:1453 slab_unreclaimable:5186 mapped:2332 shmem:115 pagetables:754 bounce:0 free_cma:0 DMA free:2116kB min:84kB low:104kB high:124kB active_anon:0kB inactive_anon:16kB active_file:0kB inactive_file:13692kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:4kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 488 488 488 DMA32 free:12584kB min:2784kB low:3480kB high:4176kB active_anon:12520kB inactive_anon:13116kB active_file:17220kB inactive_file:391868kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:499960kB managed:491256kB mlocked:0kB dirty:420kB writeback:0kB mapped:9328kB shmem:460kB slab_reclaimable:5812kB slab_unreclaimable:20740kB kernel_stack:1336kB pagetables:3016kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 4*4kB (UMR) 1*8kB (M) 1*16kB (M) 3*32kB (MR) 1*64kB (R) 1*128kB (R) 1*256kB (R) 1*512kB (R) 1*1024kB (R) 0*2048kB 0*4096kB = 2120kB DMA32: 411*4kB (UEM) 359*8kB (UEM) 207*16kB (UM) 84*32kB (UM) 25*64kB (UM) 4*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 12628kB 105835 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 392188kB Total swap = 392188kB 131054 pages RAM 3820 pages reserved 276721 pages shared 117464 pages non-shared 2773 process stuck! ===> /proc/vmstat <=== nr_free_pages 1579 nr_inactive_anon 3302 nr_active_anon 3078 nr_inactive_file 103991 nr_active_file 4357 nr_unevictable 0 nr_mlock 0 nr_anon_pages 6260 nr_mapped 2319 nr_file_pages 108478 nr_dirty 648 nr_writeback 0 nr_slab_reclaimable 1603 nr_slab_unreclaimable 5380 nr_page_table_pages 748 nr_kernel_stack 171 nr_unstable 0 nr_bounce 0 nr_vmscan_write 0 nr_vmscan_immediate_reclaim 0 nr_writeback_temp 0 nr_isolated_anon 0 nr_isolated_file 0 nr_shmem 115 nr_dirtied 841467 nr_written 15931 nr_anon_transparent_hugepages 0 nr_free_cma 0 nr_dirty_threshold 22949 nr_dirty_background_threshold 11474 pgpgin 43832 pgpgout 64464 pswpin 0 pswpout 0 pgalloc_dma 105241 pgalloc_dma32 12655633 pgalloc_normal 0 pgalloc_movable 0 pgfree 12763390 pgactivate 5358 pgdeactivate 3607 pgfault 1011343 pgmajfault 302 pgrefill_dma 407 pgrefill_dma32 3200 pgrefill_normal 0 pgrefill_movable 0 pgsteal_kswapd_dma 10785 pgsteal_kswapd_dma32 612431 pgsteal_kswapd_normal 0 pgsteal_kswapd_movable 0 pgsteal_direct_dma 2159 pgsteal_direct_dma32 120797 pgsteal_direct_normal 0 pgsteal_direct_movable 0 pgscan_kswapd_dma 10785 pgscan_kswapd_dma32 613376 pgscan_kswapd_normal 0 pgscan_kswapd_movable 0 pgscan_direct_dma 2159 pgscan_direct_dma32 120866 pgscan_direct_normal 0 pgscan_direct_movable 0 pgscan_direct_throttle 0 pginodesteal 0 slabs_scanned 3072 kswapd_inodesteal 0 kswapd_low_wmark_hit_quickly 1810 kswapd_high_wmark_hit_quickly 13 kswapd_skip_congestion_wait 0 pageoutrun 9178 allocstall 2157 pgrotated 2 pgmigrate_success 509 pgmigrate_fail 0 compact_migrate_scanned 818935 compact_free_scanned 214217 compact_isolated 27006 compact_stall 1014 compact_fail 674 compact_success 340 unevictable_pgs_culled 1064 unevictable_pgs_scanned 0 unevictable_pgs_rescued 1632 unevictable_pgs_mlocked 1632 unevictable_pgs_munlocked 1632 unevictable_pgs_cleared 0 unevictable_pgs_stranded 0 thp_fault_alloc 0 thp_fault_fallback 0 thp_collapse_alloc 0 thp_collapse_alloc_failed 0 thp_split 0 thp_zero_page_alloc 0 thp_zero_page_alloc_failed 0 ===> 2724[2724]/stack <=== [<ffffffff81077300>] futex_wait_queue_me+0xc0/0xf0 [<ffffffff81077a9d>] futex_wait+0x17d/0x280 [<ffffffff8107988c>] do_futex+0x11c/0xae0 [<ffffffff8107a2d8>] sys_futex+0x88/0x180 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2725]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2726]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2727]/stack <=== [<ffffffff81310078>] sk_stream_wait_memory+0x1b8/0x250 [<ffffffff8134be87>] tcp_sendmsg+0x697/0xd80 [<ffffffff81370cee>] inet_sendmsg+0x5e/0xa0 [<ffffffff81300a77>] sock_sendmsg+0x87/0xa0 [<ffffffff81303a59>] sys_sendto+0x119/0x160 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2724[2728]/stack <=== [<ffffffff8105d02c>] hrtimer_nanosleep+0x9c/0x150 [<ffffffff8105d13e>] sys_nanosleep+0x5e/0x80 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2773]/stack <=== [<ffffffff81077300>] futex_wait_queue_me+0xc0/0xf0 [<ffffffff81077a9d>] futex_wait+0x17d/0x280 [<ffffffff8107988c>] do_futex+0x11c/0xae0 [<ffffffff8107a2d8>] sys_futex+0x88/0x180 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2774]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2775]/stack <=== [<ffffffff810f5904>] poll_schedule_timeout+0x44/0x60 [<ffffffff810f6d54>] do_sys_poll+0x374/0x4b0 [<ffffffff810f718e>] sys_ppoll+0x19e/0x1b0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2776]/stack <=== [<ffffffff81310078>] sk_stream_wait_memory+0x1b8/0x250 [<ffffffff8134be87>] tcp_sendmsg+0x697/0xd80 [<ffffffff81370cee>] inet_sendmsg+0x5e/0xa0 [<ffffffff81300a77>] sock_sendmsg+0x87/0xa0 [<ffffffff81303a59>] sys_sendto+0x119/0x160 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ===> 2773[2777]/stack <=== [<ffffffff810400b8>] do_wait+0x1f8/0x220 [<ffffffff81040ea0>] sys_wait4+0x70/0xf0 [<ffffffff813b06e9>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff <redundant "SysRq : Show Memory" from previous process omitted> SysRq : Show Memory Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 164 CPU 1: hi: 186, btch: 31 usd: 117 active_anon:3016 inactive_anon:3281 isolated_anon:0 active_file:4357 inactive_file:104163 isolated_file:0 unevictable:0 dirty:142 writeback:0 unstable:0 free:1582 slab_reclaimable:1598 slab_unreclaimable:5380 mapped:2316 shmem:115 pagetables:773 bounce:0 free_cma:0 DMA free:2332kB min:84kB low:104kB high:124kB active_anon:8kB inactive_anon:8kB active_file:0kB inactive_file:13476kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:12kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:12kB kernel_stack:0kB pagetables:8kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 488 488 488 DMA32 free:3996kB min:2784kB low:3480kB high:4176kB active_anon:12056kB inactive_anon:13116kB active_file:17428kB inactive_file:403176kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:499960kB managed:491256kB mlocked:0kB dirty:556kB writeback:0kB mapped:9264kB shmem:460kB slab_reclaimable:6392kB slab_unreclaimable:21508kB kernel_stack:1360kB pagetables:3084kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 19*4kB (UER) 20*8kB (U) 7*16kB (U) 2*32kB (R) 0*64kB 3*128kB (R) 0*256kB 1*512kB (R) 1*1024kB (R) 0*2048kB 0*4096kB = 2332kB DMA32: 151*4kB (UEM) 210*8kB (UE) 108*16kB (U) 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4012kB 108629 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 392188kB Total swap = 392188kB 131054 pages RAM 3820 pages reserved 275952 pages shared 119896 pages non-shared -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/core/sock.c b/net/core/sock.c index bc131d4..76c4b39 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -286,6 +286,7 @@ void sk_set_memalloc(struct sock *sk) { sock_set_flag(sk, SOCK_MEMALLOC); sk->sk_allocation |= __GFP_MEMALLOC; + sk->sk_allocation &= ~__GFP_NOMEMALLOC; static_key_slow_inc(&memalloc_socks); } EXPORT_SYMBOL_GPL(sk_set_memalloc); @@ -294,6 +295,7 @@ void sk_clear_memalloc(struct sock *sk) { sock_reset_flag(sk, SOCK_MEMALLOC); sk->sk_allocation &= ~__GFP_MEMALLOC; + sk->sk_allocation |= __GFP_NOMEMALLOC; static_key_slow_dec(&memalloc_socks); /* @@ -2230,7 +2232,7 @@ void sock_init_data(struct socket *sock, struct sock *sk) init_timer(&sk->sk_timer); - sk->sk_allocation = GFP_KERNEL; + sk->sk_allocation = GFP_KERNEL | __GFP_NOMEMALLOC; sk->sk_rcvbuf = sysctl_rmem_default; sk->sk_sndbuf = sysctl_wmem_default; sk->sk_state = TCP_CLOSE;