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================================================================== BUG: KCSAN: data-race in __zone_watermark_ok / free_pcppages_bulk read to 0xffff88812fffce88 of 8 bytes by task 7440 on cpu 1: __zone_watermark_ok+0x106/0x240 mm/page_alloc.c:3444 zone_watermark_fast mm/page_alloc.c:3494 [inline] get_page_from_freelist+0x629/0x2300 mm/page_alloc.c:3635 __alloc_pages_nodemask+0x255/0x4d0 mm/page_alloc.c:4714 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1366 [inline] cache_grow_begin+0x76/0x670 mm/slab.c:2599 cache_alloc_refill mm/slab.c:2971 [inline] ____cache_alloc mm/slab.c:3054 [inline] ____cache_alloc mm/slab.c:3037 [inline] slab_alloc_node mm/slab.c:3249 [inline] kmem_cache_alloc_node_trace+0x580/0x670 mm/slab.c:3592 __do_kmalloc_node mm/slab.c:3614 [inline] __kmalloc_node_track_caller+0x38/0x50 mm/slab.c:3629 __kmalloc_reserve.isra.0+0x49/0xd0 net/core/skbuff.c:141 __alloc_skb+0xc2/0x350 net/core/skbuff.c:209 skb_copy_expand+0x85/0x210 net/core/skbuff.c:1745 sctp_ulpevent_make_send_failed+0x71/0x3e0 net/sctp/ulpevent.c:423 sctp_datamsg_destroy net/sctp/chunk.c:107 [inline] sctp_datamsg_put+0x12e/0x300 net/sctp/chunk.c:130 sctp_sendmsg_to_asoc+0xb7f/0x11c0 net/sctp/socket.c:1953 sctp_sendmsg+0xc81/0x1090 net/sctp/socket.c:2103 inet_sendmsg+0x6d/0x90 net/ipv4/af_inet.c:807 write to 0xffff88812fffce88 of 8 bytes by task 7292 on cpu 0: del_page_from_free_area include/linux/mmzone.h:151 [inline] __free_one_page mm/page_alloc.c:947 [inline] free_pcppages_bulk+0x8e9/0xc10 mm/page_alloc.c:1320 free_unref_page_commit+0x1e8/0x220 mm/page_alloc.c:3044 free_unref_page_list+0x235/0x3a0 mm/page_alloc.c:3087 release_pages+0x271/0xa90 mm/swap.c:800 __pagevec_release+0x53/0x90 mm/swap.c:820 pagevec_release include/linux/pagevec.h:88 [inline] truncate_inode_pages_range+0x774/0x1110 mm/truncate.c:370 truncate_inode_pages mm/truncate.c:476 [inline] truncate_inode_pages_final+0x64/0x90 mm/truncate.c:527 ext4_evict_inode+0x30c/0xdb0 fs/ext4/inode.c:244 evict+0x244/0x410 fs/inode.c:571 iput_final fs/inode.c:1560 [inline] iput+0x362/0x4a0 fs/inode.c:1586 do_unlinkat+0x378/0x530 fs/namei.c:4069 __do_sys_unlink fs/namei.c:4110 [inline] __se_sys_unlink fs/namei.c:4108 [inline] __x64_sys_unlink+0x3b/0x50 fs/namei.c:4108 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7292 Comm: syz-executor.5 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/10/09 07:27 | https://github.com/google/ktsan.git kcsan | d724f94f63de | 312c6a5a | .config | console log | report | ci2-upstream-kcsan-gce |