BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.2/2464 caller is __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 CPU: 0 PID: 2464 Comm: syz-executor.2 Not tainted 4.4.174+ #4 0000000000000000 3b35d324cde2c09a ffff8800a4a277d8 ffffffff81aad1a1 ffff8800a4a18000 0000000000000000 ffffffff82a861e0 ffffffff8292c040 0000000000000002 ffff8800a4a27818 ffffffff81b0ad83 1ffff10014944f00 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] check_preemption_disabled+0x1d3/0x200 lib/smp_processor_id.c:46 [] __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 [] tcp_prune_queue net/ipv4/tcp_input.c:4978 [inline] [] tcp_try_rmem_schedule+0x1a1/0x1280 net/ipv4/tcp_input.c:4386 [] tcp_send_rcvq+0x1d7/0x4a0 net/ipv4/tcp_input.c:4574 [] tcp_sendmsg+0x2332/0x2ab0 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x769/0x890 net/socket.c:1975 [] __sys_sendmsg+0xc5/0x160 net/socket.c:2009 [] SYSC_sendmsg net/socket.c:2020 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2016 [] entry_SYSCALL_64_fastpath+0x1e/0x9a audit: type=1400 audit(1575009735.479:10): avc: denied { ioctl } for pid=2470 comm="syz-executor.1" path="socket:[9231]" dev="sockfs" ino=9231 ioctlcmd=8991 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.2/2464 caller is __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 CPU: 0 PID: 2464 Comm: syz-executor.2 Not tainted 4.4.174+ #4 0000000000000000 3b35d324cde2c09a ffff8800a4a27640 ffffffff81aad1a1 ffff8800a4a18000 0000000000000000 ffffffff82a861e0 ffffffff8292c040 0000000000000002 ffff8800a4a27680 ffffffff81b0ad83 ffff8801d5873340 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] check_preemption_disabled+0x1d3/0x200 lib/smp_processor_id.c:46 [] __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 [] tcp_collapse_one+0x119/0x1e0 net/ipv4/tcp_input.c:4736 [] tcp_collapse+0x84f/0xda0 net/ipv4/tcp_input.c:4849 [] tcp_prune_queue net/ipv4/tcp_input.c:4990 [inline] [] tcp_try_rmem_schedule+0x6ba/0x1280 net/ipv4/tcp_input.c:4386 [] tcp_send_rcvq+0x1d7/0x4a0 net/ipv4/tcp_input.c:4574 [] tcp_sendmsg+0x2332/0x2ab0 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x769/0x890 net/socket.c:1975 [] __sys_sendmsg+0xc5/0x160 net/socket.c:2009 [] SYSC_sendmsg net/socket.c:2020 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2016 [] entry_SYSCALL_64_fastpath+0x1e/0x9a BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.2/2464 caller is __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 CPU: 0 PID: 2464 Comm: syz-executor.2 Not tainted 4.4.174+ #4 0000000000000000 3b35d324cde2c09a ffff8800a4a27640 ffffffff81aad1a1 ffff8800a4a18000 0000000000000000 ffffffff82a861e0 ffffffff8292c040 0000000000000002 ffff8800a4a27680 ffffffff81b0ad83 ffff8801d5873340 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] check_preemption_disabled+0x1d3/0x200 lib/smp_processor_id.c:46 [] __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 [] tcp_collapse_one+0x119/0x1e0 net/ipv4/tcp_input.c:4736 [] tcp_collapse+0x84f/0xda0 net/ipv4/tcp_input.c:4849 [] tcp_prune_queue net/ipv4/tcp_input.c:4990 [inline] [] tcp_try_rmem_schedule+0x6ba/0x1280 net/ipv4/tcp_input.c:4386 [] tcp_send_rcvq+0x1d7/0x4a0 net/ipv4/tcp_input.c:4574 [] tcp_sendmsg+0x2332/0x2ab0 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x769/0x890 net/socket.c:1975 [] __sys_sendmsg+0xc5/0x160 net/socket.c:2009 [] SYSC_sendmsg net/socket.c:2020 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2016 [] entry_SYSCALL_64_fastpath+0x1e/0x9a check_preemption_disabled: 18 callbacks suppressed BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.2/2728 caller is __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 CPU: 0 PID: 2728 Comm: syz-executor.2 Not tainted 4.4.174+ #4 0000000000000000 1d76396524f0292a ffff8800a3c57778 ffffffff81aad1a1 ffff8800a3c48000 0000000000000000 ffffffff82a861e0 ffffffff8292c040 0000000000000002 ffff8800a3c577b8 ffffffff81b0ad83 ffff8801d8818c80 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] check_preemption_disabled+0x1d3/0x200 lib/smp_processor_id.c:46 [] __this_cpu_preempt_check+0x1d/0x30 lib/smp_processor_id.c:62 [] tcp_try_coalesce net/ipv4/tcp_input.c:4293 [inline] [] tcp_try_coalesce+0x245/0x510 net/ipv4/tcp_input.c:4275 [] tcp_queue_rcv+0x127/0x6f0 net/ipv4/tcp_input.c:4539 [] tcp_send_rcvq+0x3de/0x4a0 net/ipv4/tcp_input.c:4585 [] tcp_sendmsg+0x2332/0x2ab0 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x769/0x890 net/socket.c:1975 [] __sys_sendmsg+0xc5/0x160 net/socket.c:2009 [] SYSC_sendmsg net/socket.c:2020 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2016 [] entry_SYSCALL_64_fastpath+0x1e/0x9a