Messages in this thread | | | Date | Wed, 22 May 2019 08:58:06 -0700 | Subject | memory leak in sock_hash_update_common | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: 9c7db500 Merge tag 'selinux-pr-20190521' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1287358aa00000 kernel config: https://syzkaller.appspot.com/x/.config?x=61dd9e15a761691d dashboard link: https://syzkaller.appspot.com/bug?extid=30c7a1fc662026545124 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1284fb9ca00000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+30c7a1fc662026545124@syzkaller.appspotmail.com
dy BUG: memory leak unreferenced object 0xffff88810dc30340 (size 64): comm "softirq", pid 0, jiffies 4294949769 (age 8.870s) hex dump (first 32 bytes): 00 70 f4 14 81 88 ff ff 00 2a c3 1b 82 88 ff ff .p.......*...... bf 84 c1 58 00 00 00 00 c0 f2 cc 0d 81 88 ff ff ...X............ backtrace: [<0000000059c77455>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<0000000059c77455>] slab_post_alloc_hook mm/slab.h:439 [inline] [<0000000059c77455>] slab_alloc_node mm/slab.c:3269 [inline] [<0000000059c77455>] kmem_cache_alloc_node_trace+0x15b/0x2a0 mm/slab.c:3597 [<00000000a3eee734>] __do_kmalloc_node mm/slab.c:3619 [inline] [<00000000a3eee734>] __kmalloc_node+0x38/0x50 mm/slab.c:3627 [<00000000869e2762>] kmalloc_node include/linux/slab.h:590 [inline] [<00000000869e2762>] sock_hash_alloc_elem net/core/sock_map.c:639 [inline] [<00000000869e2762>] sock_hash_update_common+0x301/0x540 net/core/sock_map.c:690 [<00000000ae16fa93>] sock_hash_update_elem+0xf0/0x130 net/core/sock_map.c:739 [<0000000047230865>] map_update_elem kernel/bpf/syscall.c:925 [inline] [<0000000047230865>] __do_sys_bpf+0x19b7/0x1dd0 kernel/bpf/syscall.c:2801 [<00000000fb5f3bec>] __se_sys_bpf kernel/bpf/syscall.c:2772 [inline] [<00000000fb5f3bec>] __x64_sys_bpf+0x1e/0x30 kernel/bpf/syscall.c:2772 [<000000007b931104>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<00000000e7e5ff7d>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
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