====================================== | [ 9.443982][ T212] softirqs last disabled at (12820): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499) | [ 9.443985][ T212] Preemption disabled at: | [ 9.443985][ T212] vprintk_emit (kernel/printk/printk.c:2471) | [ 9.443994][ T212] Tainted: [W]=WARN [ 9.443994][ T212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.443996][ T212] Call Trace: [ 9.443998][ T212] [ 9.444000][ T212] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.444005][ T212] ? vprintk_emit (kernel/printk/printk.c:2471) [ 9.444007][ T212] __might_resched.cold (kernel/sched/core.c:9234) [ 9.444011][ T212] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.444015][ T212] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.444020][ T212] __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)) [ 9.444022][ T212] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.444028][ T212] ? 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) [ 9.444031][ T212] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.444035][ T212] put_chars (drivers/char/virtio_console.c:1176) [ 9.444037][ T212] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.444041][ T212] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 9.444045][ T212] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.444049][ T212] ? mark_usage (kernel/locking/lockdep.c:4690) [ 9.444051][ T212] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.444053][ T212] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.444057][ T212] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.444059][ T212] ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2)) [ 9.444063][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444065][ T212] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.444069][ T212] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.444073][ T212] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.444075][ T212] ? 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)) [ 9.444078][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444080][ T212] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.444084][ T212] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.444088][ T212] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.444090][ T212] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.444096][ T212] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.444098][ T212] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.444100][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444102][ T212] ? 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) [ 9.444106][ T212] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.444107][ T212] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.444110][ T212] vprintk_emit (kernel/printk/printk.c:2479) [ 9.444113][ T212] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.444115][ T212] ? write_profile (profile.c:?) [ 9.444118][ T212] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 9.444124][ T212] dev_vprintk_emit (drivers/base/core.c:5000) [ 9.444129][ T212] ? device_rename.cold (drivers/base/core.c:4612 (discriminator 13)) [ 9.444133][ T212] ? filter_irq_stacks (kernel/stacktrace.c:402) [ 9.444138][ T212] dev_printk_emit (drivers/base/core.c:5011) [ 9.444141][ T212] ? dev_vprintk_emit (drivers/base/core.c:5001) [ 9.444145][ T212] ? check_prev_add (kernel/locking/lockdep.c:3258 (discriminator 3)) [ 9.444150][ T212] __netdev_printk (net/core/dev.c:13140 (discriminator 4)) [ 9.444156][ T212] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 9.444158][ T212] ? netdev_notice (net/core/dev.c:13194) [ 9.444161][ T212] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 9.444164][ T212] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.444167][ T212] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 9.444170][ T212] ? do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 9.444172][ T212] netif_change_name.cold (net/core/dev.c:1507 (discriminator 3)) [ 9.444174][ T212] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 9.444177][ T212] ? irqentry_exit (./include/linux/irq-entry-common.h:507 ./include/linux/irq-entry-common.h:542 kernel/entry/common.c:167) [ 9.444179][ T212] ? irqentry_exit (./include/linux/irq-entry-common.h:507 ./include/linux/irq-entry-common.h:542 kernel/entry/common.c:167) [ 9.444180][ T212] ? lockdep_hardirqs_off (kernel/locking/lockdep.c:4527) [ 9.444182][ T212] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37)) [ 9.444185][ T212] ? netdev_adjacent_rename_links (net/core/dev.c:9598) [ 9.444189][ T212] ? trace_contention_end (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/lock.h:121) [ 9.444194][ T212] do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 9.444197][ T212] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 9.444199][ T212] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 9.444200][ T212] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 9.444203][ T212] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 9.444206][ T212] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.444208][ T212] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 9.444210][ T212] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.444212][ T212] ? kasan_save_stack (mm/kasan/common.c:58) [ 9.444215][ T212] ? kasan_save_stack (mm/kasan/common.c:57) [ 9.444216][ T212] ? kasan_save_track (mm/kasan/common.c:78) [ 9.444217][ T212] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 9.444219][ T212] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.444221][ T212] ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320) [ 9.444224][ T212] ? ___sys_sendmsg (net/socket.c:2758) [ 9.444228][ T212] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 9.444230][ T212] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 9.444233][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444234][ T212] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.444236][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444237][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444239][ T212] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 9.444241][ T212] ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821) [ 9.444243][ T212] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 9.444244][ T212] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 9.444248][ T212] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 9.444249][ T212] ? nla_get_range_signed (lib/nlattr.c:270) [ 9.444254][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444256][ T212] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 9.444261][ T212] rtnl_newlink (net/core/rtnetlink.c:4215) [ 9.444267][ T212] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 9.444269][ T212] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.444273][ T212] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 9.444275][ T212] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 9.444277][ T212] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 9.444279][ T212] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.444282][ T212] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 9.444284][ T212] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 9.444288][ T212] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 9.444289][ T212] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.444293][ T212] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 9.444295][ T212] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 9.444299][ T212] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 9.444302][ T212] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 9.444305][ T212] ? netlink_ack (./include/linux/skbuff.h:2718) [ 9.444311][ T212] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2)) [ 9.444313][ T212] ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2)) [ 9.444318][ T212] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 9.444322][ T212] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 9.444324][ T212] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 9.444329][ T212] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 9.444333][ T212] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 9.444337][ T212] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.444338][ T212] ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373) [ 9.444343][ T212] __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4)) [ 9.444346][ T212] ____sys_sendmsg (net/socket.c:2713) [ 9.444348][ T212] ? copy_msghdr_from_user (net/socket.c:2650) [ 9.444351][ T212] ? sock_write_iter (net/socket.c:1269) [ 9.444352][ T212] ? move_addr_to_kernel (net/socket.c:258) [ 9.444360][ T212] ___sys_sendmsg (net/socket.c:2767) [ 9.444362][ T212] ? copy_msghdr_from_user (net/socket.c:2619) [ 9.444379][ T212] __sys_sendmsg (net/socket.c:2799) [ 9.444381][ T212] ? __sys_sendmsg_sock (net/socket.c:2780) [ 9.444388][ T212] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.444391][ T212] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.444394][ T212] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.444396][ T212] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.444398][ T212] RIP: 0033:0x7f4af334854e [ 9.444402][ T212] 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 [ 9.444404][ T212] RSP: 002b:00007ffdfa879040 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 9.444406][ T212] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f4af334854e [ 9.444407][ T212] RDX: 0000000000000000 RSI: 00007ffdfa8790f0 RDI: 0000000000000005 [ 9.444408][ T212] RBP: 00007ffdfa879050 R08: 0000000000000000 R09: 0000000000000000 [ 9.444409][ T212] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a912144 Finger prints: netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars