============================= WARNING: suspicious RCU usage 5.12.0-rc4-syzkaller #0 Not tainted ----------------------------- drivers/net/bonding/bond_main.c:411 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor.4/30258: #0: ffff88801cb03628 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{3:3}, at: xfrm_netlink_rcv+0x5c/0x90 net/xfrm/xfrm_user.c:2823 stack backtrace: CPU: 1 PID: 30258 Comm: syz-executor.4 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 bond_ipsec_add_sa+0x1dc/0x240 drivers/net/bonding/bond_main.c:411 xfrm_dev_state_add+0x2da/0x850 net/xfrm/xfrm_device.c:268 xfrm_state_construct net/xfrm/xfrm_user.c:655 [inline] xfrm_add_sa+0x229e/0x35f0 net/xfrm/xfrm_user.c:684 xfrm_user_rcv_msg+0x42c/0x8b0 net/xfrm/xfrm_user.c:2812 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2824 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6afd466188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fffe857118f R14: 00007f6afd466300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 30258 Comm: syz-executor.4 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bond_ipsec_add_sa+0x9e/0x240 drivers/net/bonding/bond_main.c:412 Code: 04 31 ff 89 c3 89 c6 e8 40 b6 cc fc 85 db 0f 85 f6 00 00 00 e8 83 ae cc fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 5f 01 00 00 48 8d bd d0 02 00 00 49 8b 5d 00 48 RSP: 0018:ffffc900169f7498 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90012248000 RDX: 0000000000000000 RSI: ffffffff84a747dd RDI: 0000000000000003 RBP: ffff8880249c4000 R08: 0000000000000000 R09: ffffffff8fac89cf R10: ffffffff88d3a86a R11: 0000000000000000 R12: ffff8880653c4000 R13: 0000000000000000 R14: ffff8880249c42e0 R15: ffff8880249c42e4 FS: 00007f6afd466700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004cccb8 CR3: 0000000013378000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: xfrm_dev_state_add+0x2da/0x850 net/xfrm/xfrm_device.c:268 xfrm_state_construct net/xfrm/xfrm_user.c:655 [inline] xfrm_add_sa+0x229e/0x35f0 net/xfrm/xfrm_user.c:684 xfrm_user_rcv_msg+0x42c/0x8b0 net/xfrm/xfrm_user.c:2812 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2824 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x466459 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6afd466188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fffe857118f R14: 00007f6afd466300 R15: 0000000000022000 Modules linked in: ---[ end trace 2a34877632482aa8 ]--- RIP: 0010:bond_ipsec_add_sa+0x9e/0x240 drivers/net/bonding/bond_main.c:412 Code: 04 31 ff 89 c3 89 c6 e8 40 b6 cc fc 85 db 0f 85 f6 00 00 00 e8 83 ae cc fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 5f 01 00 00 48 8d bd d0 02 00 00 49 8b 5d 00 48 RSP: 0018:ffffc900169f7498 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90012248000 RDX: 0000000000000000 RSI: ffffffff84a747dd RDI: 0000000000000003 RBP: ffff8880249c4000 R08: 0000000000000000 R09: ffffffff8fac89cf R10: ffffffff88d3a86a R11: 0000000000000000 R12: ffff8880653c4000 R13: 0000000000000000 R14: ffff8880249c42e0 R15: ffff8880249c42e4 FS: 00007f6afd466700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000543038 CR3: 0000000013378000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400