------------[ cut here ]------------ WARNING: CPU: 0 PID: 9178 at net/mptcp/protocol.c:695 __mptcp_move_skbs_from_subflow+0x2898/0x29c4 net/mptcp/protocol.c:695 Modules linked in: CPU: 0 UID: 0 PID: 9178 Comm: syz.2.761 Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mptcp_move_skbs_from_subflow+0x2898/0x29c4 net/mptcp/protocol.c:695 lr : __mptcp_move_skbs_from_subflow+0x2898/0x29c4 net/mptcp/protocol.c:695 sp : ffff800080006cf0 x29: ffff800080006e80 x28: 000000000000c0d8 x27: 00000000001c3e91 x26: 0000000000000000 x25: ffff0000d5d718c0 x24: 00000000a751f25d x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000ecd4fcd0 x20: 000000000000c0d8 x19: 0000000000001a5b x18: ffff0000d5d717b0 x17: 00000000ffff0000 x16: ffff800080569b84 x15: 0000000000000001 x14: 1fffe0001d9a9fac x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001d9a9fad x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000da6c3c80 x7 : 00007bc50000043b x6 : fffffdffc3e0a200 x5 : ffff0000d7a887b0 x4 : ffff0000cc99aba0 x3 : ffff800089452bb8 x2 : 0000000000000001 x1 : 000000000000c0d8 x0 : 0000000000001a5b Call trace: __mptcp_move_skbs_from_subflow+0x2898/0x29c4 net/mptcp/protocol.c:695 move_skbs_to_msk net/mptcp/protocol.c:811 [inline] mptcp_data_ready+0x1d8/0x7d8 net/mptcp/protocol.c:854 subflow_data_ready+0x254/0x75c net/mptcp/subflow.c:1486 tcp_data_ready+0x22c/0x44c net/ipv4/tcp_input.c:5193 tcp_data_queue+0x18a4/0x4eb8 net/ipv4/tcp_input.c:5283 tcp_rcv_established+0xe10/0x2018 net/ipv4/tcp_input.c:6230 tcp_v4_do_rcv+0x3b8/0xc44 net/ipv4/tcp_ipv4.c:1911 tcp_v4_rcv+0x2498/0x2dbc net/ipv4/tcp_ipv4.c:2346 ip_protocol_deliver_rcu+0x1f8/0x484 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x284/0x4f0 net/ipv4/ip_input.c:233 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_rcv_finish+0x220/0x24c net/ipv4/ip_input.c:449 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_rcv+0x7c/0x9c net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5661 [inline] __netif_receive_skb+0x18c/0x3c8 net/core/dev.c:5775 process_backlog+0x640/0x123c net/core/dev.c:6108 __napi_poll+0xb4/0x3fc net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [inline] net_rx_action+0x6a8/0xf4c net/core/dev.c:6963 handle_softirqs+0x2e4/0xbfc kernel/softirq.c:554 __do_softirq+0x14/0x20 kernel/softirq.c:588 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 do_softirq+0x90/0xf8 kernel/softirq.c:455 __local_bh_enable_ip+0x288/0x44c kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] unlock_sock_fast include/net/sock.h:1668 [inline] mptcp_rcv_space_adjust net/mptcp/protocol.c:2068 [inline] mptcp_recvmsg+0x1a0c/0x216c net/mptcp/protocol.c:2271 inet_recvmsg+0x124/0x210 net/ipv4/af_inet.c:885 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg net/socket.c:1068 [inline] __sys_recvfrom+0x2d8/0x468 net/socket.c:2255 __do_sys_recvfrom net/socket.c:2273 [inline] __se_sys_recvfrom net/socket.c:2269 [inline] __arm64_sys_recvfrom+0xd8/0xf8 net/socket.c:2269 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 1431 hardirqs last enabled at (1430): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (1431): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (824): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (824): [] unlock_sock_fast include/net/sock.h:1668 [inline] softirqs last enabled at (824): [] mptcp_rcv_space_adjust net/mptcp/protocol.c:2068 [inline] softirqs last enabled at (824): [] mptcp_recvmsg+0x1a0c/0x216c net/mptcp/protocol.c:2271 softirqs last disabled at (825): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9178 at net/mptcp/protocol.c:698 __mptcp_move_skbs_from_subflow+0x1c3c/0x29c4 net/mptcp/protocol.c:698 Modules linked in: CPU: 0 UID: 0 PID: 9178 Comm: syz.2.761 Tainted: G W 6.11.0-rc7-syzkaller-g5f5673607153 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mptcp_move_skbs_from_subflow+0x1c3c/0x29c4 net/mptcp/protocol.c:698 lr : __mptcp_move_skbs_from_subflow+0x1c3c/0x29c4 net/mptcp/protocol.c:698 sp : ffff800080006cf0 x29: ffff800080006e80 x28: 0000000000000000 x27: 1fffe0001a74d2f3 x26: 00000000ffff3f28 x25: ffff0000d3a69770 x24: 00000000a751f25d x23: dfff800000000000 x22: 0000000000000000 x21: 1fffe0001a74d2ee x20: 1fffe00019ebcad7 x19: 0000000000000000 x18: ffff0000d5d717b0 x17: 00000000ffff0000 x16: ffff800080569b84 x15: ffff700010000dc4 x14: 1ffff00010000dc4 x13: 0000000000000004 x12: ffff0000cf5e56b8 x11: ffff0000cfedb04c x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000da6c3c80 x7 : ffff80008b1f2318 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000803601f4 x2 : ffff800080006f00 x1 : 00000000ffff3f28 x0 : 000000000000305b Call trace: __mptcp_move_skbs_from_subflow+0x1c3c/0x29c4 net/mptcp/protocol.c:698 move_skbs_to_msk net/mptcp/protocol.c:811 [inline] mptcp_data_ready+0x1d8/0x7d8 net/mptcp/protocol.c:854 subflow_data_ready+0x254/0x75c net/mptcp/subflow.c:1486 tcp_data_ready+0x22c/0x44c net/ipv4/tcp_input.c:5193 tcp_data_queue+0x18a4/0x4eb8 net/ipv4/tcp_input.c:5283 tcp_rcv_established+0xe10/0x2018 net/ipv4/tcp_input.c:6230 tcp_v4_do_rcv+0x3b8/0xc44 net/ipv4/tcp_ipv4.c:1911 tcp_v4_rcv+0x2498/0x2dbc net/ipv4/tcp_ipv4.c:2346 ip_protocol_deliver_rcu+0x1f8/0x484 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x284/0x4f0 net/ipv4/ip_input.c:233 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_rcv_finish+0x220/0x24c net/ipv4/ip_input.c:449 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_rcv+0x7c/0x9c net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5661 [inline] __netif_receive_skb+0x18c/0x3c8 net/core/dev.c:5775 process_backlog+0x640/0x123c net/core/dev.c:6108 __napi_poll+0xb4/0x3fc net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [inline] net_rx_action+0x6a8/0xf4c net/core/dev.c:6963 handle_softirqs+0x2e4/0xbfc kernel/softirq.c:554 __do_softirq+0x14/0x20 kernel/softirq.c:588 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 do_softirq+0x90/0xf8 kernel/softirq.c:455 __local_bh_enable_ip+0x288/0x44c kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] unlock_sock_fast include/net/sock.h:1668 [inline] mptcp_rcv_space_adjust net/mptcp/protocol.c:2068 [inline] mptcp_recvmsg+0x1a0c/0x216c net/mptcp/protocol.c:2271 inet_recvmsg+0x124/0x210 net/ipv4/af_inet.c:885 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg net/socket.c:1068 [inline] __sys_recvfrom+0x2d8/0x468 net/socket.c:2255 __do_sys_recvfrom net/socket.c:2273 [inline] __se_sys_recvfrom net/socket.c:2269 [inline] __arm64_sys_recvfrom+0xd8/0xf8 net/socket.c:2269 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 1485 hardirqs last enabled at (1484): [] ___slab_alloc+0x5e8/0xf38 mm/slub.c:3637 hardirqs last disabled at (1485): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (824): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (824): [] unlock_sock_fast include/net/sock.h:1668 [inline] softirqs last enabled at (824): [] mptcp_rcv_space_adjust net/mptcp/protocol.c:2068 [inline] softirqs last enabled at (824): [] mptcp_recvmsg+0x1a0c/0x216c net/mptcp/protocol.c:2271 softirqs last disabled at (825): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9178 at net/mptcp/subflow.c:974 skb_is_fully_mapped net/mptcp/subflow.c:974 [inline] WARNING: CPU: 0 PID: 9178 at net/mptcp/subflow.c:974 get_mapping_status net/mptcp/subflow.c:1185 [inline] WARNING: CPU: 0 PID: 9178 at net/mptcp/subflow.c:974 subflow_check_data_avail net/mptcp/subflow.c:1326 [inline] WARNING: CPU: 0 PID: 9178 at net/mptcp/subflow.c:974 mptcp_subflow_data_available+0x199c/0x3520 net/mptcp/subflow.c:1421 Modules linked in: CPU: 0 UID: 0 PID: 9178 Comm: syz.2.761 Tainted: G W 6.11.0-rc7-syzkaller-g5f5673607153 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_is_fully_mapped net/mptcp/subflow.c:974 [inline] pc : get_mapping_status net/mptcp/subflow.c:1185 [inline] pc : subflow_check_data_avail net/mptcp/subflow.c:1326 [inline] pc : mptcp_subflow_data_available+0x199c/0x3520 net/mptcp/subflow.c:1421 lr : skb_is_fully_mapped net/mptcp/subflow.c:974 [inline] lr : get_mapping_status net/mptcp/subflow.c:1185 [inline] lr : subflow_check_data_avail net/mptcp/subflow.c:1326 [inline] lr : mptcp_subflow_data_available+0x199c/0x3520 net/mptcp/subflow.c:1421 sp : ffff800080006df0 x29: ffff800080006f40 x28: dfff800000000000 x27: 0000000000017300 x26: ffff0000d3a694f0 x25: 00000000000201e9 x24: 00000000000081cd x23: 00000000ffff0ecd x22: 1fffe00019ebcad5 x21: ffff0000cf5e56a8 x20: ffff0000cfedb000 x19: 00000000a751f25d x18: ffff0000d3a6957c x17: 000000000003e92e x16: ffff800080569b84 x15: 0000000000000001 x14: 1fffe00019ebcaba x13: 0000000000000000 x12: 0000000000000000 x11: ffff600019ebcabb x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000da6c3c80 x7 : 0000000000000000 x6 : 0200000000000002 x5 : ffff0000c625e730 x4 : 0000000000000000 x3 : ffff80008b2225fc x2 : 0000000000000000 x1 : 00000000ffff0ecd x0 : 00000000000081cd Call trace: skb_is_fully_mapped net/mptcp/subflow.c:974 [inline] get_mapping_status net/mptcp/subflow.c:1185 [inline] subflow_check_data_avail net/mptcp/subflow.c:1326 [inline] mptcp_subflow_data_available+0x199c/0x3520 net/mptcp/subflow.c:1421 subflow_data_ready+0x244/0x75c net/mptcp/subflow.c:1485 tcp_data_ready+0x22c/0x44c net/ipv4/tcp_input.c:5193 tcp_data_queue+0x18a4/0x4eb8 net/ipv4/tcp_input.c:5283 tcp_rcv_established+0xe10/0x2018 net/ipv4/tcp_input.c:6230 tcp_v4_do_rcv+0x3b8/0xc44 net/ipv4/tcp_ipv4.c:1911 tcp_v4_rcv+0x2498/0x2dbc net/ipv4/tcp_ipv4.c:2346 ip_protocol_deliver_rcu+0x1f8/0x484 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x284/0x4f0 net/ipv4/ip_input.c:233 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_rcv_finish+0x220/0x24c net/ipv4/ip_input.c:449 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_rcv+0x7c/0x9c net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5661 [inline] __netif_receive_skb+0x18c/0x3c8 net/core/dev.c:5775 process_backlog+0x640/0x123c net/core/dev.c:6108 __napi_poll+0xb4/0x3fc net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [inline] net_rx_action+0x6a8/0xf4c net/core/dev.c:6963 handle_softirqs+0x2e4/0xbfc kernel/softirq.c:554 __do_softirq+0x14/0x20 kernel/softirq.c:588 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 do_softirq+0x90/0xf8 kernel/softirq.c:455 __local_bh_enable_ip+0x288/0x44c kernel/softirq.c:382 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] unlock_sock_fast include/net/sock.h:1668 [inline] mptcp_rcv_space_adjust net/mptcp/protocol.c:2068 [inline] mptcp_recvmsg+0x1a0c/0x216c net/mptcp/protocol.c:2271 inet_recvmsg+0x124/0x210 net/ipv4/af_inet.c:885 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg net/socket.c:1068 [inline] __sys_recvfrom+0x2d8/0x468 net/socket.c:2255 __do_sys_recvfrom net/socket.c:2273 [inline] __se_sys_recvfrom net/socket.c:2269 [inline] __arm64_sys_recvfrom+0xd8/0xf8 net/socket.c:2269 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 1541 hardirqs last enabled at (1540): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:387 hardirqs last disabled at (1541): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (824): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (824): [] unlock_sock_fast include/net/sock.h:1668 [inline] softirqs last enabled at (824): [] mptcp_rcv_space_adjust net/mptcp/protocol.c:2068 [inline] softirqs last enabled at (824): [] mptcp_recvmsg+0x1a0c/0x216c net/mptcp/protocol.c:2271 softirqs last disabled at (825): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]---