====================================== | [ 11.720480][ T218] softirqs last disabled at (44406): release_sock (./include/linux/spinlock.h:353 net/core/sock.c:3858) | [ 11.720485][ T218] Preemption disabled at: | [ 11.720486][ T218] vprintk_emit (kernel/printk/printk.c:2471) | [ 11.720498][ T218] Tainted: [W]=WARN [ 11.720499][ T218] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.720502][ T218] Call Trace: [ 11.720504][ T218] [ 11.720506][ T218] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 11.720514][ T218] ? vprintk_emit (kernel/printk/printk.c:2471) [ 11.720517][ T218] __might_resched.cold (kernel/sched/core.c:9234) [ 11.720523][ T218] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 11.720529][ T218] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 11.720535][ T218] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 11.720538][ T218] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.720548][ T218] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 11.720552][ T218] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 11.720558][ T218] put_chars (drivers/char/virtio_console.c:1176) [ 11.720562][ T218] ? __send_to_port (drivers/char/virtio_console.c:654) [ 11.720570][ T218] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 11.720576][ T218] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 11.720582][ T218] ? mark_usage (kernel/locking/lockdep.c:4690) [ 11.720585][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.720588][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.720595][ T218] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 11.720599][ T218] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 11.720604][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.720615][ T218] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.720622][ T218] console_emit_next_record (kernel/printk/printk.c:3183) [ 11.720628][ T218] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 11.720631][ T218] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 11.720636][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.720639][ T218] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 11.720646][ T218] console_flush_one_record (kernel/printk/printk.c:3268) [ 11.720653][ T218] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 11.720656][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 11.720666][ T218] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 11.720670][ T218] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 11.720673][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.720676][ T218] ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871) [ 11.720682][ T218] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 11.720685][ T218] ? vprintk_emit (kernel/printk/printk.c:2478) [ 11.720690][ T218] vprintk_emit (kernel/printk/printk.c:2479) [ 11.720696][ T218] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 11.720698][ T218] ? kasan_save_stack (mm/kasan/common.c:58) [ 11.720702][ T218] ? kasan_save_track (mm/kasan/common.c:78) [ 11.720704][ T218] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 11.720706][ T218] ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563) [ 11.720708][ T218] ? packet_mc_add (./include/linux/slab.h:991 (discriminator 1) net/packet/af_packet.c:3729 (discriminator 1)) [ 11.720710][ T218] ? packet_setsockopt (net/packet/af_packet.c:3840) [ 11.720713][ T218] ? do_sock_setsockopt (net/socket.c:2397) [ 11.720719][ T218] _printk (kernel/printk/printk.c:2504) [ 11.720724][ T218] ? snapshot_read.cold (user.c:?) [ 11.720732][ T218] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 11.720737][ T218] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 11.720743][ T218] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 11.720747][ T218] ? netdev_notice (net/core/dev.c:13194) [ 11.720760][ T218] ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65) [ 11.720765][ T218] __dev_set_promiscuity.cold (net/core/dev.c:9672 (discriminator 3)) [ 11.720771][ T218] netif_set_promiscuity (net/core/dev.c:9699) [ 11.720777][ T218] dev_set_promiscuity (net/core/dev_api.c:288) [ 11.720779][ T218] ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1)) [ 11.720785][ T218] packet_mc_add (net/packet/af_packet.c:3755) [ 11.720788][ T218] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.720793][ T218] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 11.720797][ T218] ? _copy_from_user (./include/linux/instrumented.h:146 ./include/linux/uaccess.h:184 lib/usercopy.c:18) [ 11.720804][ T218] packet_setsockopt (net/packet/af_packet.c:3840) [ 11.720810][ T218] ? packet_bind (net/packet/af_packet.c:3341) [ 11.720817][ T218] ? do_sock_getsockopt (net/socket.c:2484) [ 11.720826][ T218] ? sock_poll (net/socket.c:1514) [ 11.720832][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 11.720835][ T218] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 11.720843][ T218] do_sock_setsockopt (net/socket.c:2397) [ 11.720848][ T218] ? put_user_ifreq (./arch/x86/include/asm/compat.h:94 (discriminator 1)) [ 11.720851][ T218] ? __sys_bind (net/socket.c:1945 (discriminator 3) net/socket.c:1937 (discriminator 3) net/socket.c:1976 (discriminator 3)) [ 11.720856][ T218] ? __sys_bind_socket (net/socket.c:1945 (discriminator 3)) [ 11.720867][ T218] __sys_setsockopt (net/socket.c:2422) [ 11.720875][ T218] __x64_sys_setsockopt (net/socket.c:2428 net/socket.c:2425 net/socket.c:2425) [ 11.720878][ T218] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 11.720881][ T218] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 11.720885][ T218] ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44)) [ 11.720889][ T218] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 11.720892][ T218] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 11.720896][ T218] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 11.720899][ T218] RIP: 0033:0x7f5bbbaab2de [ 11.720905][ T218] Code: 55 48 63 c9 48 63 ff 45 89 c9 48 89 e5 48 83 ec 08 6a 2c e8 94 72 f7 ff c9 c3 66 90 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 e1 All code ======== 0: 55 push %rbp 1: 48 63 c9 movslq %ecx,%rcx 4: 48 63 ff movslq %edi,%rdi 7: 45 89 c9 mov %r9d,%r9d a: 48 89 e5 mov %rsp,%rbp d: 48 83 ec 08 sub $0x8,%rsp 11: 6a 2c push $0x2c 13: e8 94 72 f7 ff call 0xfffffffffff772ac 18: c9 leave 19: c3 ret 1a: 66 90 xchg %ax,%ax 1c: f3 0f 1e fa endbr64 20: 49 89 ca mov %rcx,%r10 23: b8 36 00 00 00 mov $0x36,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 0a ja 0x3c 32: c3 ret 33: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 3a: 00 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 15 .byte 0x15 3f: e1 .byte 0xe1 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 0a ja 0x12 8: c3 ret 9: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 10: 00 00 12: 48 rex.W 13: 8b .byte 0x8b 14: 15 .byte 0x15 15: e1 .byte 0xe1 [ 11.720908][ T218] RSP: 002b:00007ffe4dfcccf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 11.720911][ T218] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5bbbaab2de [ 11.720913][ T218] RDX: 0000000000000001 RSI: 0000000000000107 RDI: 0000000000000005 [ 11.720915][ T218] RBP: 00007ffe4dfcce30 R08: 0000000000000010 R09: 000055cece736530 [ 11.720916][ T218] R10: 00007ffe4dfccd70 R11: 0000000000000246 R12: 0000000000000001 [ 11.720918][ T218] R13: 000055cece736918 R14: 000055cece736690 R15: 0000000000000000 | [ 12.765107][ T218] softirqs last disabled at (53287): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 12.765109][ T218] Preemption disabled at: | [ 12.765110][ T218] vprintk_emit (kernel/printk/printk.c:2471) | [ 12.765119][ T218] Tainted: [W]=WARN [ 12.765120][ T218] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.765122][ T218] Call Trace: [ 12.765123][ T218] [ 12.765125][ T218] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 12.765132][ T218] ? vprintk_emit (kernel/printk/printk.c:2471) [ 12.765133][ T218] __might_resched.cold (kernel/sched/core.c:9234) [ 12.765138][ T218] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 12.765143][ T218] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 12.765148][ T218] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 12.765150][ T218] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 12.765158][ T218] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 12.765161][ T218] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 12.765165][ T218] put_chars (drivers/char/virtio_console.c:1176) [ 12.765168][ T218] ? __send_to_port (drivers/char/virtio_console.c:654) [ 12.765170][ T218] ? check_prev_add (kernel/locking/lockdep.c:3185) [ 12.765175][ T218] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 12.765179][ T218] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 12.765184][ T218] ? mark_usage (kernel/locking/lockdep.c:4690) [ 12.765186][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.765188][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.765193][ T218] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 12.765195][ T218] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 12.765200][ T218] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.765205][ T218] console_emit_next_record (kernel/printk/printk.c:3183) [ 12.765210][ T218] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 12.765212][ T218] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 12.765216][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.765219][ T218] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.765224][ T218] console_flush_one_record (kernel/printk/printk.c:3268) [ 12.765229][ T218] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 12.765232][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.765238][ T218] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 12.765242][ T218] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 12.765244][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.765246][ T218] ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871) [ 12.765251][ T218] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 12.765253][ T218] ? vprintk_emit (kernel/printk/printk.c:2478) [ 12.765256][ T218] vprintk_emit (kernel/printk/printk.c:2479) [ 12.765260][ T218] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 12.765263][ T218] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.765267][ T218] _printk (kernel/printk/printk.c:2504) [ 12.765271][ T218] ? snapshot_read.cold (user.c:?) [ 12.765273][ T218] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 12.765277][ T218] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.765279][ T218] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 12.765283][ T218] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 12.765288][ T218] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 12.765291][ T218] ? netdev_notice (net/core/dev.c:13194) [ 12.765293][ T218] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2)) [ 12.765295][ T218] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1)) [ 12.765300][ T218] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 12.765302][ T218] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 12.765305][ T218] ? ref_tracker_alloc (lib/ref_tracker.c:283) [ 12.765308][ T218] ? packet_release (./include/linux/netdevice.h:4548 ./include/linux/netdevice.h:4565 ./include/linux/netdevice.h:4561 net/packet/af_packet.c:3176) [ 12.765311][ T218] ? __fput (fs/file_table.c:512) [ 12.765315][ T218] ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65) [ 12.765318][ T218] __dev_set_promiscuity.cold (net/core/dev.c:9672 (discriminator 3)) [ 12.765322][ T218] netif_set_promiscuity (net/core/dev.c:9699) [ 12.765328][ T218] dev_set_promiscuity (net/core/dev_api.c:288) [ 12.765331][ T218] packet_release (net/packet/af_packet.c:3807 net/packet/af_packet.c:3181) [ 12.765336][ T218] ? packet_set_ring (net/packet/af_packet.c:652) [ 12.765340][ T218] ? rwsem_down_write_slowpath (./include/linux/list.h:170) [ 12.765346][ T218] __sock_release (net/socket.c:735) [ 12.765350][ T218] sock_close (net/socket.c:1526 (discriminator 1)) [ 12.765351][ T218] __fput (fs/file_table.c:512) [ 12.765357][ T218] fput_close_sync (fs/file_table.c:617) [ 12.765360][ T218] ? alloc_file_clone (fs/file_table.c:479) [ 12.765363][ T218] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 12.765368][ T218] __x64_sys_close (fs/open.c:1560 fs/open.c:1545 fs/open.c:1545) [ 12.765371][ T218] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 12.765374][ T218] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 12.765377][ T218] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 12.765379][ T218] RIP: 0033:0x7f5bbba2254e [ 12.765383][ T218] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 12.765385][ T218] RSP: 002b:00007ffe4dfcce60 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 12.765388][ T218] RAX: ffffffffffffffda RBX: 000055cece736690 RCX: 00007f5bbba2254e [ 12.765389][ T218] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 12.765390][ T218] RBP: 00007ffe4dfcce70 R08: 0000000000000000 R09: 0000000000000000 [ 12.765391][ T218] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 Finger prints: release_sock:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars __irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars