general protection fault, probably for non-canonical address 0xf21aa30018380065: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x90d53800c1c00328-0x90d53800c1c0032f]
CPU: 1 PID: 197 Comm: kworker/u4:4 Not tainted 5.9.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_connect_worker
RIP: 0010:htab_elem_free kernel/bpf/hashtab.c:769 [inline]
RIP: 0010:htab_elem_free_rcu+0x4a/0x110 kernel/bpf/hashtab.c:779
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bc 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b f8 48 8d 7d 18 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 82 00 00 00 44 8b 65 18 bf 05
RSP: 0018:ffffc90000da8e48 EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: ffff888050000010 RCX: 00000000ffcdd7b0
RDX: 121aa70018380065 RSI: ffffffff8187116e RDI: 90d53800c1c0032e
RBP: 90d53800c1c00316 R08: 0000000000000000 R09: ffffffff8c5f39ff
R10: fffffbfff18be73f R11: 0000000000000160 R12: ffffc90000da8ed8
R13: ffff888050000000 R14: 0000000000000000 R15: ffff8880a8b54240
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000744138 CR3: 0000000088277000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_do_batch kernel/rcu/tree.c:2428 [inline]
 rcu_core+0x5c7/0x1190 kernel/rcu/tree.c:2656
 __do_softirq+0x2de/0xa24 kernel/softirq.c:298
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77
 do_softirq kernel/softirq.c:343 [inline]
 do_softirq+0x17b/0x1e0 kernel/softirq.c:330
 __local_bh_enable_ip+0x14d/0x190 kernel/softirq.c:195
 lock_sock include/net/sock.h:1583 [inline]
 tcp_sock_set_nodelay+0x18/0xe0 net/ipv4/tcp.c:2913
 rds_tcp_tune+0x1ca/0x490 net/rds/tcp.c:496
 rds_tcp_conn_path_connect+0x489/0x880 net/rds/tcp_connect.c:126
 rds_connect_worker+0x1a5/0x2c0 net/rds/threads.c:176
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace 5a7658fa0ce2d0f6 ]---
RIP: 0010:htab_elem_free kernel/bpf/hashtab.c:769 [inline]
RIP: 0010:htab_elem_free_rcu+0x4a/0x110 kernel/bpf/hashtab.c:779
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bc 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b f8 48 8d 7d 18 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 82 00 00 00 44 8b 65 18 bf 05
RSP: 0018:ffffc90000da8e48 EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: ffff888050000010 RCX: 00000000ffcdd7b0
RDX: 121aa70018380065 RSI: ffffffff8187116e RDI: 90d53800c1c0032e
RBP: 90d53800c1c00316 R08: 0000000000000000 R09: ffffffff8c5f39ff
R10: fffffbfff18be73f R11: 0000000000000160 R12: ffffc90000da8ed8
R13: ffff888050000000 R14: 0000000000000000 R15: ffff8880a8b54240
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000744138 CR3: 0000000088277000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600