====================================== | [ 8.949293][ T82] softirqs last disabled at (412055): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 8.949295][ T82] Preemption disabled at: | [ 8.949296][ T82] vprintk_emit (kernel/printk/printk.c:2471) | [ 8.949305][ T82] Tainted: [W]=WARN [ 8.949306][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.949307][ T82] Call Trace: [ 8.949309][ T82] [ 8.949311][ T82] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 8.949316][ T82] ? vprintk_emit (kernel/printk/printk.c:2471) [ 8.949318][ T82] __might_resched.cold (kernel/sched/core.c:9234) [ 8.949323][ T82] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 8.949327][ T82] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 8.949332][ T82] __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)) [ 8.949334][ T82] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 8.949340][ T82] ? 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) [ 8.949342][ T82] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 8.949345][ T82] put_chars (drivers/char/virtio_console.c:1176) [ 8.949348][ T82] ? __send_to_port (drivers/char/virtio_console.c:654) [ 8.949352][ T82] ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928) [ 8.949357][ T82] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 8.949359][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949365][ T82] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 8.949367][ T82] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.949374][ T82] console_emit_next_record (kernel/printk/printk.c:3183) [ 8.949378][ T82] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 8.949382][ T82] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.949385][ T82] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 8.949389][ T82] console_flush_one_record (kernel/printk/printk.c:3268) [ 8.949393][ T82] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 8.949394][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949396][ T82] ? asm_fred_entrypoint_user (arch/x86/entry/entry_64_fred.S:40) [ 8.949402][ T82] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 8.949405][ T82] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 8.949406][ T82] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.949408][ T82] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 8.949412][ T82] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 8.949414][ T82] ? vprintk_emit (kernel/printk/printk.c:2478) [ 8.949417][ T82] vprintk_emit (kernel/printk/printk.c:2479) [ 8.949421][ T82] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 8.949423][ T82] ? write_profile (profile.c:?) [ 8.949426][ T82] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380) [ 8.949433][ T82] dev_vprintk_emit (drivers/base/core.c:5000) [ 8.949438][ T82] ? device_rename.cold (drivers/base/core.c:4612 (discriminator 13)) [ 8.949443][ T82] ? filter_irq_stacks (kernel/stacktrace.c:402) [ 8.949449][ T82] dev_printk_emit (drivers/base/core.c:5011) [ 8.949452][ T82] ? dev_vprintk_emit (drivers/base/core.c:5001) [ 8.949456][ T82] ? check_prev_add (kernel/locking/lockdep.c:3258 (discriminator 3)) [ 8.949461][ T82] __netdev_printk (net/core/dev.c:13140 (discriminator 4)) [ 8.949467][ T82] netdev_info (net/core/dev.c:13195 (discriminator 3)) [ 8.949469][ T82] ? netdev_notice (net/core/dev.c:13194) [ 8.949472][ T82] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.949476][ T82] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 8.949478][ T82] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 8.949481][ T82] ? do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 8.949484][ T82] netif_change_name.cold (net/core/dev.c:1507 (discriminator 3)) [ 8.949487][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949489][ T82] ? 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) [ 8.949491][ T82] ? find_held_lock (kernel/locking/lockdep.c:5360) [ 8.949494][ T82] ? netdev_adjacent_rename_links (net/core/dev.c:9598) [ 8.949498][ T82] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.949501][ T82] ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1)) [ 8.949507][ T82] do_setlink.isra.0 (net/core/rtnetlink.c:3246) [ 8.949510][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949513][ T82] ? rtnl_link_get_size (net/core/rtnetlink.c:747) [ 8.949515][ T82] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.949516][ T82] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 8.949519][ T82] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 8.949521][ T82] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 8.949526][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949530][ T82] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.949532][ T82] ? rtnl_setlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:3586) [ 8.949535][ T82] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.949537][ T82] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 8.949539][ T82] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.949540][ T82] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 8.949542][ T82] ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22)) [ 8.949545][ T82] ? __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) [ 8.949547][ T82] ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1)) [ 8.949549][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949550][ T82] ? rtnl_setlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:3586) [ 8.949553][ T82] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.949555][ T82] ? ww_mutex_lock (kernel/locking/mutex.c:934) [ 8.949557][ T82] ? nla_get_range_signed (lib/nlattr.c:270) [ 8.949564][ T82] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.949567][ T82] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 8.949575][ T82] rtnl_setlink (net/core/rtnetlink.c:3596) [ 8.949579][ T82] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 8.949581][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949606][ T82] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.949607][ T82] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.949611][ T82] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 8.949612][ T82] ? mark_usage (kernel/locking/lockdep.c:4690) [ 8.949614][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949619][ T82] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.949620][ T82] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.949623][ T82] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 8.949625][ T82] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 8.949629][ T82] ? __rtnl_newlink (net/core/rtnetlink.c:4090 (discriminator 1)) [ 8.949631][ T82] rtnetlink_rcv_msg (net/core/rtnetlink.c:7132) [ 8.949635][ T82] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 8.949636][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949641][ T82] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 8.949643][ T82] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 8.949647][ T82] netlink_rcv_skb (net/netlink/af_netlink.c:2556) [ 8.949650][ T82] ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1)) [ 8.949654][ T82] ? netlink_ack (./include/linux/skbuff.h:2718) [ 8.949661][ T82] ? 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)) [ 8.949663][ T82] ? 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)) [ 8.949668][ T82] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345) [ 8.949672][ T82] ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) [ 8.949675][ T82] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 8.949677][ T82] ? do_raw_spin_trylock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:93 kernel/locking/spinlock_debug.c:123) [ 8.949681][ T82] netlink_sendmsg (net/netlink/af_netlink.c:1900) [ 8.949685][ T82] ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7)) [ 8.949689][ T82] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 8.949693][ T82] ? __might_fault (mm/memory.c:7482 (discriminator 5)) [ 8.949697][ T82] __sys_sendto (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2281 (discriminator 4)) [ 8.949700][ T82] ? __ia32_sys_getpeername (net/socket.c:2235) [ 8.949712][ T82] ? exc_page_fault (arch/x86/mm/fault.c:1483 arch/x86/mm/fault.c:1536) [ 8.949717][ T82] __x64_sys_sendto (net/socket.c:2288 net/socket.c:2284 net/socket.c:2284) [ 8.949719][ T82] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 8.949723][ T82] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 8.949725][ T82] ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44)) [ 8.949726][ T82] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 8.949727][ T82] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 8.949730][ T82] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 8.949733][ T82] RIP: 0033:0x7f5c49efd54e [ 8.949736][ T82] 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 [ 8.949738][ T82] RSP: 002b:00007ffc3ca50fe0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 8.949741][ T82] RAX: ffffffffffffffda RBX: 0000561d106fbf80 RCX: 00007f5c49efd54e [ 8.949742][ T82] RDX: 0000000000000030 RSI: 0000561d106f9210 RDI: 0000000000000011 [ 8.949743][ T82] RBP: 00007ffc3ca50ff0 R08: 00007ffc3ca51040 R09: 0000000000000080 [ 8.949744][ T82] R10: 0000000000000000 R11: 0000000000000202 R12: 0000561d1084ded0 Finger prints: __irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars