============================= WARNING: suspicious RCU usage 5.9.0-rc3-syzkaller #0 Not tainted ----------------------------- drivers/net/bonding/bond_main.c:395 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.5/4498: #0: ffff88805dfb1ba8 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{3:3}, at: xfrm_netlink_rcv+0x5c/0x90 net/xfrm/xfrm_user.c:2691 stack backtrace: CPU: 0 PID: 4498 Comm: syz-executor.5 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 bond_ipsec_add_sa+0x1dc/0x240 drivers/net/bonding/bond_main.c:395 xfrm_dev_state_add+0x2da/0x7b0 net/xfrm/xfrm_device.c:268 xfrm_state_construct net/xfrm/xfrm_user.c:655 [inline] xfrm_add_sa+0x2166/0x34f0 net/xfrm/xfrm_user.c:684 xfrm_user_rcv_msg+0x414/0x700 net/xfrm/xfrm_user.c:2684 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2692 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f05712aec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf80 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007fffb39f7adf R14: 00007f05712af9c0 R15: 000000000118cf4c general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 4498 Comm: syz-executor.5 Not tainted 5.9.0-rc3-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:396 Code: 03 31 ff 89 c3 89 c6 e8 b0 04 bd fc 85 db 0f 85 f6 00 00 00 e8 23 08 bd 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:ffffc9000745f4a8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90013566000 RDX: 0000000000000000 RSI: ffffffff84b742dd RDI: 0000000000000212 RBP: ffff88804c02f7c0 R08: 0000000000000001 R09: ffffffff8c5f4ae7 R10: fffffbfff18be95c R11: 0000000039343454 R12: ffff88805510c000 R13: 0000000000000000 R14: ffff88804c02faa0 R15: ffff88804c02faa4 FS: 00007f05712af700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb18879bdb8 CR3: 0000000040f72000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: xfrm_dev_state_add+0x2da/0x7b0 net/xfrm/xfrm_device.c:268 xfrm_state_construct net/xfrm/xfrm_user.c:655 [inline] xfrm_add_sa+0x2166/0x34f0 net/xfrm/xfrm_user.c:684 xfrm_user_rcv_msg+0x414/0x700 net/xfrm/xfrm_user.c:2684 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 xfrm_netlink_rcv+0x6b/0x90 net/xfrm/xfrm_user.c:2692 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f05712aec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cf80 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007fffb39f7adf R14: 00007f05712af9c0 R15: 000000000118cf4c Modules linked in: ---[ end trace cecb8e0ee8da13dc ]--- RIP: 0010:bond_ipsec_add_sa+0x9e/0x240 drivers/net/bonding/bond_main.c:396 Code: 03 31 ff 89 c3 89 c6 e8 b0 04 bd fc 85 db 0f 85 f6 00 00 00 e8 23 08 bd 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:ffffc9000745f4a8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90013566000 RDX: 0000000000000000 RSI: ffffffff84b742dd RDI: 0000000000000212 RBP: ffff88804c02f7c0 R08: 0000000000000001 R09: ffffffff8c5f4ae7 R10: fffffbfff18be95c R11: 0000000039343454 R12: ffff88805510c000 R13: 0000000000000000 R14: ffff88804c02faa0 R15: ffff88804c02faa4 FS: 00007f05712af700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020a0003f CR3: 0000000040f72000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400