netlink: 28 bytes leftover after parsing attributes in process `syz.4.317'.
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
6.14.0-syzkaller-01103-g2df0c02dab82 #0 Not tainted
------------------------------------------------------
syz.4.317/7001 is trying to acquire lock:
ffffffff8ea162a0 (console_owner){-.-.}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
ffffffff8ea162a0 (console_owner){-.-.}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
ffffffff8ea162a0 (console_owner){-.-.}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
ffffffff8ea162a0 (console_owner){-.-.}-{0:0}, at: console_flush_all+0x1a5/0xec0 kernel/printk/printk.c:3185

but task is already holding lock:
ffff8880b8639958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:603

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&rq->__lock){-.-.}-{2:2}:
       lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
       _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
       raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:595
       raw_spin_rq_lock kernel/sched/sched.h:1513 [inline]
       task_rq_lock+0xcb/0x440 kernel/sched/core.c:697
       cgroup_move_task+0x9b/0x660 kernel/sched/psi.c:1161
       css_set_move_task+0x72e/0x950 kernel/cgroup/cgroup.c:898
       cgroup_post_fork+0x27f/0x8c0 kernel/cgroup/cgroup.c:6695
       copy_process+0x39b5/0x3d10 kernel/fork.c:2625
       kernel_clone+0x227/0x880 kernel/fork.c:2811
       user_mode_thread+0x148/0x1c0 kernel/fork.c:2889
       rest_init+0x23/0x300 init/main.c:708
       start_kernel+0x484/0x510 init/main.c:1099
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
       x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
       common_startup_64+0x13e/0x147

-> #3 (&p->pi_lock){-.-.}-{2:2}:
       lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd8/0x130 kernel/locking/spinlock.c:162
       class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
       try_to_wake_up+0xc6/0x15d0 kernel/sched/core.c:4203
       __wake_up_common kernel/sched/wait.c:89 [inline]
       __wake_up_common_lock+0x130/0x1e0 kernel/sched/wait.c:106
       tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69
       serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1844
       serial8250_handle_irq+0x631/0xb80 drivers/tty/serial/8250/8250_port.c:1952
       serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1972
       serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:86
       __handle_irq_event_percpu+0x29c/0xa60 kernel/irq/handle.c:158
       handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
       handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
       handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
       generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
       handle_irq arch/x86/kernel/irq.c:254 [inline]
       call_irq_handler arch/x86/kernel/irq.c:266 [inline]
       __common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:292
       common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:285
       asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
       native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
       arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
       acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
       acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:701
       cpuidle_enter_state+0x111/0x480 drivers/cpuidle/cpuidle.c:268
       cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:389
       call_cpuidle kernel/sched/idle.c:155 [inline]
       cpuidle_idle_call kernel/sched/idle.c:230 [inline]
       do_idle+0x374/0x5d0 kernel/sched/idle.c:325
       cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
       rest_init+0x2dc/0x300 init/main.c:743
       start_kernel+0x484/0x510 init/main.c:1099
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
       x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
       common_startup_64+0x13e/0x147

-> #2 (&tty->write_wait){-.-.}-{3:3}:
       lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd8/0x130 kernel/locking/spinlock.c:162
       __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105
       tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69
       serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1844
       serial8250_handle_irq+0x631/0xb80 drivers/tty/serial/8250/8250_port.c:1952
       serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1972
       serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:86
       __handle_irq_event_percpu+0x29c/0xa60 kernel/irq/handle.c:158
       handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
       handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
       handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
       generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
       handle_irq arch/x86/kernel/irq.c:254 [inline]
       call_irq_handler arch/x86/kernel/irq.c:266 [inline]
       __common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:292
       common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:285
       asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
       native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
       arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
       acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
       acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:701
       cpuidle_enter_state+0x111/0x480 drivers/cpuidle/cpuidle.c:268
       cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:389
       call_cpuidle kernel/sched/idle.c:155 [inline]
       cpuidle_idle_call kernel/sched/idle.c:230 [inline]
       do_idle+0x374/0x5d0 kernel/sched/idle.c:325
       cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
       rest_init+0x2dc/0x300 init/main.c:743
       start_kernel+0x484/0x510 init/main.c:1099
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
       x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
       common_startup_64+0x13e/0x147

-> #1 (&port_lock_key){-.-.}-{3:3}:
       lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd8/0x130 kernel/locking/spinlock.c:162
       uart_port_lock_irqsave include/linux/serial_core.h:715 [inline]
       serial8250_console_write+0x1b0/0x1e00 drivers/tty/serial/8250/8250_port.c:3424
       console_emit_next_record kernel/printk/printk.c:3120 [inline]
       console_flush_all+0x86d/0xec0 kernel/printk/printk.c:3208
       __console_flush_and_unlock kernel/printk/printk.c:3267 [inline]
       console_unlock+0x151/0x3b0 kernel/printk/printk.c:3307
       vprintk_emit+0x732/0xa10 kernel/printk/printk.c:2432
       _printk+0xd5/0x120 kernel/printk/printk.c:2457
       register_console+0xc7b/0x1080 kernel/printk/printk.c:4097
       univ8250_console_init+0x52/0x90 drivers/tty/serial/8250/8250_core.c:513
       console_init+0x1b8/0x6f0 kernel/printk/printk.c:4290
       start_kernel+0x2dd/0x510 init/main.c:1034
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
       x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
       common_startup_64+0x13e/0x147

-> #0 (console_owner){-.-.}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3166 [inline]
       check_prevs_add kernel/locking/lockdep.c:3285 [inline]
       validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909
       __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235
       lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
       console_lock_spinning_enable kernel/printk/printk.c:1924 [inline]
       console_emit_next_record kernel/printk/printk.c:3114 [inline]
       console_flush_all+0x7fa/0xec0 kernel/printk/printk.c:3208
       __console_flush_and_unlock kernel/printk/printk.c:3267 [inline]
       console_unlock+0x151/0x3b0 kernel/printk/printk.c:3307
       vprintk_emit+0x732/0xa10 kernel/printk/printk.c:2432
       _printk+0xd5/0x120 kernel/printk/printk.c:2457
       fail_dump lib/fault-inject.c:66 [inline]
       should_fail_ex+0x405/0x570 lib/fault-inject.c:174
       strncpy_from_user+0x36/0x280 lib/strncpy_from_user.c:118
       strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:193
       bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline]
       ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:224 [inline]
       bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:221
       bpf_prog_bc7c5c6b9645592f+0x3e/0x40
       bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
       __bpf_prog_run include/linux/filter.h:701 [inline]
       bpf_prog_run include/linux/filter.h:708 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:2358 [inline]
       bpf_trace_run4+0x336/0x5a0 kernel/trace/bpf_trace.c:2401
       __bpf_trace_sched_switch+0x296/0x3d0 include/trace/events/sched.h:220
       __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:220
       __do_trace_sched_switch include/trace/events/sched.h:220 [inline]
       trace_sched_switch include/trace/events/sched.h:220 [inline]
       __schedule+0x275e/0x5090 kernel/sched/core.c:6745
       preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7070
       irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
       asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
       arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
       kfence_alloc include/linux/kfence.h:121 [inline]
       slab_alloc_node mm/slub.c:4171 [inline]
       __do_kmalloc_node mm/slub.c:4317 [inline]
       __kmalloc_node_track_caller_noprof+0xfa/0x4d0 mm/slub.c:4337
       kmemdup_noprof+0x2b/0x70 mm/util.c:136
       _Z14kmemdup_noprofPKvU25pass_dynamic_object_size0mj include/linux/fortify-string.h:765 [inline]
       attach_crypt net/xfrm/xfrm_user.c:575 [inline]
       xfrm_state_construct net/xfrm/xfrm_user.c:880 [inline]
       xfrm_add_sa+0x2474/0x4250 net/xfrm/xfrm_user.c:974
       xfrm_user_rcv_msg+0x9c3/0xca0 net/xfrm/xfrm_user.c:3447
       netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2533
       xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3469
       netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
       netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1338
       netlink_sendmsg+0x8e8/0xce0 net/netlink/af_netlink.c:1882
       sock_sendmsg_nosec net/socket.c:718 [inline]
       __sock_sendmsg+0x221/0x270 net/socket.c:733
       ____sys_sendmsg+0x53c/0x870 net/socket.c:2573
       ___sys_sendmsg net/socket.c:2627 [inline]
       __sys_sendmsg+0x271/0x360 net/socket.c:2659
       do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
       do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

other info that might help us debug this:

Chain exists of:
  console_owner --> &p->pi_lock --> &rq->__lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&rq->__lock);
                               lock(&p->pi_lock);
                               lock(&rq->__lock);
  lock(console_owner);

 *** DEADLOCK ***

5 locks held by syz.4.317/7001:
 #0: ffff888061ec37d8 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{4:4}, at: xfrm_netlink_rcv+0x6a/0x90 net/xfrm/xfrm_user.c:3468
 #1: ffff8880b8639958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:603
 #2: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #2: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #2: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2357 [inline]
 #2: ffffffff8eb3a760 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x246/0x5a0 kernel/trace/bpf_trace.c:2401
 #3: ffffffff8ea16300 (console_lock){+.+.}-{0:0}, at: _printk+0xd5/0x120 kernel/printk/printk.c:2457
 #4: ffffffff8ea15f10 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
 #4: ffffffff8ea15f10 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
 #4: ffffffff8ea15f10 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
 #4: ffffffff8ea15f10 (console_srcu){....}-{0:0}, at: console_flush_all+0x1a5/0xec0 kernel/printk/printk.c:3185

stack backtrace:
CPU: 0 UID: 0 PID: 7001 Comm: syz.4.317 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079
 check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211
 check_prev_add kernel/locking/lockdep.c:3166 [inline]
 check_prevs_add kernel/locking/lockdep.c:3285 [inline]
 validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909
 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235
 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866
 console_lock_spinning_enable kernel/printk/printk.c:1924 [inline]
 console_emit_next_record kernel/printk/printk.c:3114 [inline]
 console_flush_all+0x7fa/0xec0 kernel/printk/printk.c:3208
 __console_flush_and_unlock kernel/printk/printk.c:3267 [inline]
 console_unlock+0x151/0x3b0 kernel/printk/printk.c:3307
 vprintk_emit+0x732/0xa10 kernel/printk/printk.c:2432
 _printk+0xd5/0x120 kernel/printk/printk.c:2457
 fail_dump lib/fault-inject.c:66 [inline]
 should_fail_ex+0x405/0x570 lib/fault-inject.c:174
 strncpy_from_user+0x36/0x280 lib/strncpy_from_user.c:118
 strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:193
 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline]
 ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:224 [inline]
 bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:221
 bpf_prog_bc7c5c6b9645592f+0x3e/0x40
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2358 [inline]
 bpf_trace_run4+0x336/0x5a0 kernel/trace/bpf_trace.c:2401
 __bpf_trace_sched_switch+0x296/0x3d0 include/trace/events/sched.h:220
 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:220
 __do_trace_sched_switch include/trace/events/sched.h:220 [inline]
 trace_sched_switch include/trace/events/sched.h:220 [inline]
 __schedule+0x275e/0x5090 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7070
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:slab_alloc_node mm/slub.c:4171 [inline]
RIP: 0010:__do_kmalloc_node mm/slub.c:4317 [inline]
RIP: 0010:__kmalloc_node_track_caller_noprof+0xfa/0x4d0 mm/slub.c:4337
Code: db 74 ff 2e 2e 2e 31 c0 4c 89 ff 89 de e8 9e 0f 0c 00 31 db 4d 85 ff 0f 84 8e 01 00 00 85 c0 0f 85 86 01 00 00 cc f2 02 00 00 <48> c7 44 24 18 00 00 00 00 44 89 64 24 04 45 89 e0 65 48 8b 05 35
RSP: 0018:ffffc9001c5d7258 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000060 RDI: ffffffff8ec542e0
RBP: 0000000000000044 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
R13: 0000000000000cc0 R14: ffffffff933c6020 R15: ffff88801ac41280
 kmemdup_noprof+0x2b/0x70 mm/util.c:136
 _Z14kmemdup_noprofPKvU25pass_dynamic_object_size0mj include/linux/fortify-string.h:765 [inline]
 attach_crypt net/xfrm/xfrm_user.c:575 [inline]
 xfrm_state_construct net/xfrm/xfrm_user.c:880 [inline]
 xfrm_add_sa+0x2474/0x4250 net/xfrm/xfrm_user.c:974
 xfrm_user_rcv_msg+0x9c3/0xca0 net/xfrm/xfrm_user.c:3447
 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2533
 xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3469
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x8e8/0xce0 net/netlink/af_netlink.c:1882
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:733
 ____sys_sendmsg+0x53c/0x870 net/socket.c:2573
 ___sys_sendmsg net/socket.c:2627 [inline]
 __sys_sendmsg+0x271/0x360 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fabe3b8d169
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fabe4a87038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fabe3da6080 RCX: 00007fabe3b8d169
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007fabe4a87090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007fabe3da6080 R15: 00007ffeb8387f18
 </TASK>
CPU: 0 UID: 0 PID: 7001 Comm: syz.4.317 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x424/0x570 lib/fault-inject.c:174
 strncpy_from_user+0x36/0x280 lib/strncpy_from_user.c:118
 strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:193
 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline]
 ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:224 [inline]
 bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:221
 bpf_prog_bc7c5c6b9645592f+0x3e/0x40
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2358 [inline]
 bpf_trace_run4+0x336/0x5a0 kernel/trace/bpf_trace.c:2401
 __bpf_trace_sched_switch+0x296/0x3d0 include/trace/events/sched.h:220
 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:220
 __do_trace_sched_switch include/trace/events/sched.h:220 [inline]
 trace_sched_switch include/trace/events/sched.h:220 [inline]
 __schedule+0x275e/0x5090 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7070
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:709
RIP: 0010:slab_alloc_node mm/slub.c:4171 [inline]
RIP: 0010:__do_kmalloc_node mm/slub.c:4317 [inline]
RIP: 0010:__kmalloc_node_track_caller_noprof+0xfa/0x4d0 mm/slub.c:4337
Code: db 74 ff 2e 2e 2e 31 c0 4c 89 ff 89 de e8 9e 0f 0c 00 31 db 4d 85 ff 0f 84 8e 01 00 00 85 c0 0f 85 86 01 00 00 cc f2 02 00 00 <48> c7 44 24 18 00 00 00 00 44 89 64 24 04 45 89 e0 65 48 8b 05 35
RSP: 0018:ffffc9001c5d7258 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000060 RDI: ffffffff8ec542e0
RBP: 0000000000000044 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
R13: 0000000000000cc0 R14: ffffffff933c6020 R15: ffff88801ac41280
 kmemdup_noprof+0x2b/0x70 mm/util.c:136
 _Z14kmemdup_noprofPKvU25pass_dynamic_object_size0mj include/linux/fortify-string.h:765 [inline]
 attach_crypt net/xfrm/xfrm_user.c:575 [inline]
 xfrm_state_construct net/xfrm/xfrm_user.c:880 [inline]
 xfrm_add_sa+0x2474/0x4250 net/xfrm/xfrm_user.c:974
 xfrm_user_rcv_msg+0x9c3/0xca0 net/xfrm/xfrm_user.c:3447
 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2533
 xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3469
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x8e8/0xce0 net/netlink/af_netlink.c:1882
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:733
 ____sys_sendmsg+0x53c/0x870 net/socket.c:2573
 ___sys_sendmsg net/socket.c:2627 [inline]
 __sys_sendmsg+0x271/0x360 net/socket.c:2659
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fabe3b8d169
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fabe4a87038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fabe3da6080 RCX: 00007fabe3b8d169
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007fabe4a87090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007fabe3da6080 R15: 00007ffeb8387f18
 </TASK>