kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 6434 Comm: syz-executor2 Not tainted 4.15.0-rc8+ #263 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__bpf_prog_put+0x8e/0x580 kernel/bpf/syscall.c:939 RSP: 0018:ffff8801d4bef1e0 EFLAGS: 00010a03 RAX: 15040042e0000325 RBX: 1ffff1003a97de3f RCX: ffffffff817db4f7 RDX: 0000000000000000 RSI: 0000000000000001 RDI: a820021700001917 RBP: ffff8801d4bef2c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: a820021700001917 R13: a82002170000192f R14: ffff8801d4bef298 R15: dffffc0000000000 FS: 00007f02f8407700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020fea000 CR3: 0000000006822002 CR4: 00000000001626f0 Call Trace: bpf_prog_put+0x1a/0x20 kernel/bpf/syscall.c:950 prog_fd_array_put_ptr+0x15/0x20 kernel/bpf/arraymap.c:446 fd_array_map_delete_elem kernel/bpf/arraymap.c:420 [inline] bpf_fd_array_map_clear+0xd2/0x140 kernel/bpf/arraymap.c:461 bpf_map_put_uref+0x54/0x70 kernel/bpf/syscall.c:224 bpf_map_put_with_uref kernel/bpf/syscall.c:248 [inline] bpf_map_release+0x91/0xc0 kernel/bpf/syscall.c:259 __fput+0x327/0x7e0 fs/file_table.c:210 ____fput+0x15/0x20 fs/file_table.c:244 task_work_run+0x199/0x270 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x9bb/0x1ad0 kernel/exit.c:865 do_group_exit+0x149/0x400 kernel/exit.c:968 get_signal+0x73f/0x16c0 kernel/signal.c:2335 do_signal+0x90/0x1eb0 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x214/0x310 arch/x86/entry/common.c:158 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264 entry_SYSCALL_64_fastpath+0x9e/0xa0 RIP: 0033:0x452df9 RSP: 002b:00007f02f8406ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000071bf80 RCX: 0000000000452df9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000071bf80 RBP: 000000000071bf80 R08: 000000000000003c R09: 000000000071bf58 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000a2f7ef R14: 00007f02f84079c0 R15: 0000000000000002 Code: f1 f1 f1 c7 40 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 c9 62 f2 ff 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 07 04 00 00 49 8b 44 24 18 f0 ff 08 74 3a RIP: __bpf_prog_put+0x8e/0x580 kernel/bpf/syscall.c:939 RSP: ffff8801d4bef1e0 ---[ end trace d9abdcded25769c5 ]--- sit: non-ECT from 0.0.0.0 with TOS=0x2 sit: non-ECT from 0.0.0.0 with TOS=0x2 netlink: 'syz-executor7': attribute type 3 has an invalid length. netlink: 'syz-executor7': attribute type 3 has an invalid length. sit: non-ECT from 0.0.0.0 with TOS=0x2 sit: non-ECT from 0.0.0.0 with TOS=0x2