1FILE: kernel/bpf/arraymap.c 2 3kasan: CONFIG_KASAN_INLINE enabled 4kasan: GPF could be caused by NULL-ptr deref or user memory access 5general protection fault: 0000 [#1] SMP KASAN 6Dumping ftrace buffer: 7 (ftrace buffer empty) 8Modules linked in: 9CPU: 3 PID: 5124 Comm: kworker/3:3 Not tainted 4.12.0-rc3+ #370 10Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 11Workqueue: events bpf_map_free_deferred 12task: ffff880065321700 task.stack: ffff880065380000 13RIP: 0010:css_put include/linux/cgroup.h:354 [inline] 14RIP: 0010:cgroup_put include/linux/cgroup.h:373 [inline] 15RIP: 0010:cgroup_fd_array_put_ptr+0x88/0x370 kernel/bpf/arraymap.c:535 16RSP: 0018:ffff880065387378 EFLAGS: 00010202 17RAX: 000000002000000d RBX: 1ffff1000ca70e71 RCX: 1ffffffff0a1912c 18RDX: 0000000000000000 RSI: 1ffff1000ca643e6 RDI: 0000000100000069 19RBP: ffff880065387450 R08: ffffffff85b0b9e0 R09: 0000000000000000 20R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffffd 21R13: ffff880065387428 R14: dffffc0000000000 R15: ffffffff850c8920 22FS: 0000000000000000(0000) GS:ffff88006df00000(0000) knlGS:0000000000000000 23CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 24CR2: 0000000020014000 CR3: 00000000231ae000 CR4: 00000000000006e0 25Call Trace: 26 fd_array_map_delete_elem kernel/bpf/arraymap.c:374 [inline] 27 bpf_fd_array_map_clear+0x144/0x260 kernel/bpf/arraymap.c:410 28 cgroup_fd_array_free+0x15/0x20 kernel/bpf/arraymap.c:540 29 bpf_map_free_deferred+0xac/0xd0 kernel/bpf/syscall.c:124 30 process_one_work+0xc03/0x1bd0 kernel/workqueue.c:2097 31 worker_thread+0x223/0x1860 kernel/workqueue.c:2231 32 kthread+0x35e/0x430 kernel/kthread.c:231 33 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:424 34Code: 04 00 f2 f2 f2 c7 40 08 f2 f2 f2 f2 c7 40 0c 00 f2 f2 f2 c7 40 10 f3 f3 f3 f3 e8 a4 dc f0 ff 49 8d 7c 24 6c 48 89 f8 48 c1 e8 03 <42> 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 35RIP: css_put include/linux/cgroup.h:354 [inline] RSP: ffff880065387378 36RIP: cgroup_put include/linux/cgroup.h:373 [inline] RSP: ffff880065387378 37RIP: cgroup_fd_array_put_ptr+0x88/0x370 kernel/bpf/arraymap.c:535 RSP: ffff880065387378 38---[ end trace 6192ca3b51b170a8 ]--- 39Kernel panic - not syncing: Fatal exception 40Dumping ftrace buffer: 41 (ftrace buffer empty) 42Kernel Offset: disabled 43Rebooting in 86400 seconds.. 44