====================================== | [ 12.836122][ T236] softirqs last disabled at (25198): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499) | [ 12.836126][ T236] Preemption disabled at: | [ 12.836127][ T236] vprintk_emit (kernel/printk/printk.c:2471) | [ 12.836138][ T236] Tainted: [W]=WARN [ 12.836139][ T236] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.836142][ T236] Call Trace: [ 12.836144][ T236] [ 12.836146][ T236] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 12.836153][ T236] ? vprintk_emit (kernel/printk/printk.c:2471) [ 12.836156][ T236] __might_resched.cold (kernel/sched/core.c:9234) [ 12.836162][ T236] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 12.836167][ T236] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 12.836174][ T236] __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)) [ 12.836177][ T236] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 12.836187][ T236] ? 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) [ 12.836190][ T236] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 12.836196][ T236] put_chars (drivers/char/virtio_console.c:1176) [ 12.836200][ T236] ? __send_to_port (drivers/char/virtio_console.c:654) [ 12.836211][ T236] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 12.836223][ T236] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 12.836229][ T236] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.836236][ T236] console_emit_next_record (kernel/printk/printk.c:3183) [ 12.836242][ T236] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 12.836245][ T236] ? 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)) [ 12.836250][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836254][ T236] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.836261][ T236] console_flush_one_record (kernel/printk/printk.c:3268) [ 12.836268][ T236] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 12.836275][ T236] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.836284][ T236] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 12.836289][ T236] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 12.836291][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836295][ T236] ? 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) [ 12.836301][ T236] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 12.836304][ T236] ? vprintk_emit (kernel/printk/printk.c:2478) [ 12.836309][ T236] vprintk_emit (kernel/printk/printk.c:2479) [ 12.836314][ T236] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 12.836318][ T236] ? save_trace (kernel/locking/lockdep.c:589) [ 12.836326][ T236] _printk (kernel/printk/printk.c:2504) [ 12.836330][ T236] ? snapshot_read.cold (user.c:?) [ 12.836336][ T236] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 12.836340][ T236] ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1)) [ 12.836345][ T236] ? __netdev_printk (net/core/dev.c:13148 (discriminator 2)) [ 12.836349][ T236] ? do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 12.836353][ T236] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 12.836358][ T236] ? netdev_notice (net/core/dev.c:13194) [ 12.836362][ T236] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 12.836367][ T236] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 12.836372][ T236] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 12.836378][ T236] ? do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 12.836381][ T236] netif_change_name.cold (net/core/dev.c:1507 (discriminator 3)) [ 12.836385][ T236] ? register_netdev (net/core/dev.c:11618) [ 12.836387][ T236] ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2)) [ 12.836395][ T236] ? netdev_adjacent_rename_links (net/core/dev.c:9598) [ 12.836399][ T236] ? __kernel_text_address (kernel/extable.c:79) [ 12.836402][ T236] ? write_profile (profile.c:?) [ 12.836408][ T236] ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1)) [ 12.836417][ T236] do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 12.836423][ T236] ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1)) [ 12.836426][ T236] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 12.836429][ T236] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380) [ 12.836432][ T236] ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2)) [ 12.836437][ T236] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 12.836441][ T236] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 12.836444][ T236] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 12.836448][ T236] ? kasan_save_stack (mm/kasan/common.c:58) [ 12.836451][ T236] ? kasan_save_stack (mm/kasan/common.c:57) [ 12.836453][ T236] ? kasan_save_track (mm/kasan/common.c:78) [ 12.836455][ T236] ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415) [ 12.836459][ T236] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.836462][ T236] ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320) [ 12.836466][ T236] ? ___sys_sendmsg (net/socket.c:2758) [ 12.836472][ T236] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 12.836475][ T236] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 12.836480][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836483][ T236] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.836485][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836487][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836490][ T236] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 12.836497][ T236] ? __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) [ 12.836501][ T236] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 12.836504][ T236] ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214) [ 12.836510][ T236] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 12.836512][ T236] ? nla_get_range_signed (lib/nlattr.c:270) [ 12.836520][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836524][ T236] ? __rtnl_newlink (net/core/rtnetlink.c:4063) [ 12.836534][ T236] rtnl_newlink (net/core/rtnetlink.c:4215) [ 12.836544][ T236] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 12.836547][ T236] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.836555][ T236] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 12.836558][ T236] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 12.836561][ T236] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 12.836564][ T236] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 12.836571][ T236] ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558) [ 12.836575][ T236] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 12.836580][ T236] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 12.836582][ T236] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.836590][ T236] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 12.836593][ T236] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 12.836599][ T236] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 12.836604][ T236] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 12.836609][ T236] ? netlink_ack (./include/linux/skbuff.h:2718) [ 12.836620][ T236] ? 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)) [ 12.836623][ T236] ? 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)) [ 12.836631][ T236] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 12.836638][ T236] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 12.836642][ T236] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 12.836650][ T236] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 12.836656][ T236] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 12.836663][ T236] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 12.836665][ T236] ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373) [ 12.836674][ T236] __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4)) [ 12.836679][ T236] ____sys_sendmsg (net/socket.c:2713) [ 12.836682][ T236] ? copy_msghdr_from_user (net/socket.c:2650) [ 12.836686][ T236] ? sock_write_iter (net/socket.c:1269) [ 12.836688][ T236] ? move_addr_to_kernel (net/socket.c:258) [ 12.836702][ T236] ___sys_sendmsg (net/socket.c:2767) [ 12.836706][ T236] ? copy_msghdr_from_user (net/socket.c:2619) [ 12.836736][ T236] __sys_sendmsg (net/socket.c:2799) [ 12.836740][ T236] ? __sys_sendmsg_sock (net/socket.c:2780) [ 12.836751][ T236] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.836757][ T236] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 12.836761][ T236] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 12.836766][ T236] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 12.836769][ T236] RIP: 0033:0x7f21612f354e [ 12.836774][ T236] 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 [ 12.836777][ T236] RSP: 002b:00007fff32405380 EFLAGS: 00000202 ORIG_RAX: 000000000000002e [ 12.836781][ T236] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f21612f354e [ 12.836783][ T236] RDX: 0000000000000000 RSI: 00007fff32405430 RDI: 0000000000000005 [ 12.836785][ T236] RBP: 00007fff32405390 R08: 0000000000000000 R09: 0000000000000000 [ 12.836786][ T236] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9160a7 Finger prints: netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars