====================================== | [ 8.805670][ T84] softirqs last disabled at (367430): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499) | [ 8.805672][ T84] Preemption disabled at: | [ 8.805672][ T84] vprintk_emit (kernel/printk/printk.c:2471) | [ 8.805681][ T84] Tainted: [W]=WARN [ 8.805682][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.805684][ T84] Call Trace: [ 8.805686][ T84] [ 8.805687][ T84] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 8.805692][ T84] ? vprintk_emit (kernel/printk/printk.c:2471) [ 8.805694][ T84] __might_resched.cold (kernel/sched/core.c:9234) [ 8.805699][ T84] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 8.805703][ T84] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 8.805707][ T84] __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)) [ 8.805709][ T84] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 8.805714][ T84] ? 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) [ 8.805717][ T84] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 8.805720][ T84] put_chars (drivers/char/virtio_console.c:1176) [ 8.805723][ T84] ? __send_to_port (drivers/char/virtio_console.c:654) [ 8.805726][ T84] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 8.805731][ T84] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 8.805733][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805738][ T84] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 8.805741][ T84] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.805747][ T84] console_emit_next_record (kernel/printk/printk.c:3183) [ 8.805750][ T84] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 8.805754][ T84] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.805756][ T84] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 8.805760][ T84] console_flush_one_record (kernel/printk/printk.c:3268) [ 8.805764][ T84] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 8.805765][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805770][ T84] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 8.805773][ T84] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 8.805774][ T84] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.805776][ T84] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 8.805780][ T84] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 8.805781][ T84] ? vprintk_emit (kernel/printk/printk.c:2478) [ 8.805784][ T84] vprintk_emit (kernel/printk/printk.c:2479) [ 8.805788][ T84] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 8.805790][ T84] ? dev_vprintk_emit (drivers/base/core.c:4954 drivers/base/core.c:4998) [ 8.805797][ T84] dev_vprintk_emit (drivers/base/core.c:5000) [ 8.805800][ T84] ? device_rename.cold (drivers/base/core.c:4612 (discriminator 13)) [ 8.805804][ T84] ? filter_irq_stacks (kernel/stacktrace.c:402) [ 8.805811][ T84] dev_printk_emit (drivers/base/core.c:5011) [ 8.805814][ T84] ? dev_vprintk_emit (drivers/base/core.c:5001) [ 8.805818][ T84] ? check_prev_add (kernel/locking/lockdep.c:3258 (discriminator 3)) [ 8.805822][ T84] __netdev_printk (net/core/dev.c:13140 (discriminator 4)) [ 8.805827][ T84] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 8.805829][ T84] ? netdev_notice (net/core/dev.c:13194) [ 8.805832][ T84] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.805836][ T84] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 8.805838][ T84] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 8.805841][ T84] ? do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 8.805844][ T84] netif_change_name.cold (net/core/dev.c:1507 (discriminator 3)) [ 8.805846][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805848][ T84] ? rwsem_optimistic_spin (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:4434 kernel/locking/rwsem.c:245 kernel/locking/rwsem.c:898) [ 8.805850][ T84] ? find_held_lock (kernel/locking/lockdep.c:5360) [ 8.805853][ T84] ? netdev_adjacent_rename_links (net/core/dev.c:9598) [ 8.805856][ T84] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.805859][ T84] ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1)) [ 8.805864][ T84] do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 8.805867][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805870][ T84] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 8.805871][ T84] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.805873][ T84] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 8.805875][ T84] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 8.805877][ T84] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 8.805881][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805886][ T84] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.805887][ T84] ? rtnl_setlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:3586) [ 8.805890][ T84] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.805892][ T84] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 8.805893][ T84] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.805895][ T84] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.805897][ T84] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 8.805900][ T84] ? __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) [ 8.805902][ T84] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 8.805904][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805906][ T84] ? rtnl_setlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:3586) [ 8.805908][ T84] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.805910][ T84] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 8.805912][ T84] ? nla_get_range_signed (lib/nlattr.c:270) [ 8.805918][ T84] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.805921][ T84] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 8.805928][ T84] rtnl_setlink (net/core/rtnetlink.c:3596) [ 8.805932][ T84] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 8.805933][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805956][ T84] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.805958][ T84] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.805961][ T84] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 8.805962][ T84] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.805964][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805969][ T84] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.805970][ T84] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.805972][ T84] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 8.805974][ T84] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 8.805978][ T84] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 8.805980][ T84] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 8.805984][ T84] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 8.805985][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.805989][ T84] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.805991][ T84] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.805995][ T84] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 8.805998][ T84] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 8.806001][ T84] ? netlink_ack (./include/linux/skbuff.h:2718) [ 8.806008][ T84] ? 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)) [ 8.806010][ T84] ? 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)) [ 8.806015][ T84] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 8.806019][ T84] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 8.806021][ T84] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.806025][ T84] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 8.806030][ T84] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 8.806033][ T84] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 8.806037][ T84] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 8.806040][ T84] __sys_sendto (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2281 (discriminator 4)) [ 8.806044][ T84] ? __ia32_sys_getpeername (net/socket.c:2235) [ 8.806054][ T84] ? exc_page_fault (arch/x86/mm/fault.c:1483 arch/x86/mm/fault.c:1536) [ 8.806060][ T84] __x64_sys_sendto (net/socket.c:2288 net/socket.c:2284 net/socket.c:2284) [ 8.806062][ T84] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 8.806066][ T84] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 8.806067][ T84] ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44)) [ 8.806069][ T84] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 8.806070][ T84] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 8.806073][ T84] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 8.806075][ T84] RIP: 0033:0x7f63a4baa54e [ 8.806079][ T84] 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 [ 8.806081][ T84] RSP: 002b:00007ffc2f5435f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 8.806083][ T84] RAX: ffffffffffffffda RBX: 000055ce124aef40 RCX: 00007f63a4baa54e [ 8.806085][ T84] RDX: 0000000000000030 RSI: 000055ce1260d2b0 RDI: 0000000000000016 [ 8.806085][ T84] RBP: 00007ffc2f543600 R08: 00007ffc2f543650 R09: 0000000000000080 [ 8.806086][ T84] R10: 0000000000000000 R11: 0000000000000202 R12: 000055ce12610d40 Finger prints: netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars