====================================== | [ 1947.586637][ T4804] 8021q: adding VLAN 0 to HW filter on device eni1982np1 | [ 1947.590681][ T4786] ------------[ cut here ]------------ | [ 1947.590951][ T4786] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#2: python3/4786 | [ 1947.591387][ T4786] Modules linked in: netdevsim psample cls_flower ip6_gre ip_gre gre act_mirred cls_u32 ifb unix_diag vxlan act_gact cls_matchall sch_ingress geneve ipt_REJECT nf_reject_ipv4 nft_compat nf_tables [ 1947.592355][ T4786] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1947.592599][ T4786] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim [ 1947.592851][ T4786] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 e5 05 00 00 48 8b 3b e8 94 93 1a c8 31 c0 48 8d ab 48 07 00 00 eb 07 90 <0f> 0b 90 83 c0 01 0f b7 d0 be 00 10 00 00 48 89 ef e8 b2 ee 58 c7 All code ======== 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: 00 fc add %bh,%ah 6: ff lcall (bad) 7: df 48 c1 fisttps -0x3f(%rax) a: e9 03 80 3c 01 jmp 0x13c8012 f: 00 0f add %cl,(%rdi) 11: 85 e5 test %esp,%ebp 13: 05 00 00 48 8b add $0x8b480000,%eax 18: 3b e8 cmp %eax,%ebp 1a: 94 xchg %eax,%esp 1b: 93 xchg %eax,%ebx 1c: 1a c8 sbb %al,%cl 1e: 31 c0 xor %eax,%eax 20: 48 8d ab 48 07 00 00 lea 0x748(%rbx),%rbp 27: eb 07 jmp 0x30 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 83 c0 01 add $0x1,%eax 30: 0f b7 d0 movzwl %ax,%edx 33: be 00 10 00 00 mov $0x1000,%esi 38: 48 89 ef mov %rbp,%rdi 3b: e8 b2 ee 58 c7 call 0xffffffffc758eef2 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 83 c0 01 add $0x1,%eax 6: 0f b7 d0 movzwl %ax,%edx 9: be 00 10 00 00 mov $0x1000,%esi e: 48 89 ef mov %rbp,%rdi 11: e8 b2 ee 58 c7 call 0xffffffffc758eec8 [ 1947.593445][ T4786] RSP: 0018:ffa0000004be79b8 EFLAGS: 00010293 [ 1947.593697][ T4786] RAX: 0000000000000000 RBX: ff1100000f80ad40 RCX: ff1100000f80b488 [ 1947.594073][ T4786] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 [ 1947.594347][ T4786] RBP: ff1100000f80b488 R08: ff1100000f80b488 R09: 0000000000000000 [ 1947.594632][ T4786] R10: 1fe2200001f01691 R11: 0000000000000001 R12: ff11000016803c98 [ 1947.594906][ T4786] R13: dffffc0000000000 R14: ff11000016803800 R15: ffffffffc0321380 [ 1947.595190][ T4786] FS: 00007f5cdeb083c0(0000) GS:ff110000e0ad5000(0000) knlGS:0000000000000000 [ 1947.595512][ T4786] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1947.595753][ T4786] CR2: 00007f87e0becdb4 CR3: 000000000d25d006 CR4: 0000000000771ef0 [ 1947.596041][ T4786] PKRU: 55555554 [ 1947.596204][ T4786] Call Trace: [ 1947.596369][ T4786] [ 1947.596501][ T4786] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 1947.596711][ T4786] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim [ 1947.596948][ T4786] ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1)) [ 1947.597163][ T4786] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim [ 1947.597407][ T4786] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim [ 1947.597614][ T4786] device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307) [ 1947.597852][ T4786] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 1947.598061][ T4786] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623) [ 1947.598262][ T4786] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 1947.598457][ T4786] device_del (drivers/base/core.c:3879) [ 1947.598628][ T4786] ? __device_link_del (drivers/base/core.c:3833) [ 1947.598832][ T4786] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 1947.599045][ T4786] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 1947.599244][ T4786] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 1947.599483][ T4786] ? sysfs_file_kobj (./include/linux/rcupdate.h:322 (discriminator 1) ./include/linux/rcupdate.h:881 (discriminator 1) ./include/linux/rcupdate.h:1193 (discriminator 1) fs/sysfs/file.c:24 (discriminator 1)) [ 1947.599688][ T4786] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 1947.599923][ T4786] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 1947.600134][ T4786] ? sysfs_kf_write (fs/sysfs/file.c:139) [ 1947.600338][ T4786] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 1947.600541][ T4786] ? kernfs_ops (fs/kernfs/file.c:312) [ 1947.600704][ T4786] new_sync_write (fs/read_write.c:596 (discriminator 1)) [ 1947.600908][ T4786] ? new_sync_read (fs/read_write.c:586) [ 1947.601116][ T4786] ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) [ 1947.601315][ T4786] ? ksys_write (fs/read_write.c:741) [ 1947.601524][ T4786] vfs_write (fs/read_write.c:688) [ 1947.601689][ T4786] ksys_write (fs/read_write.c:741) [ 1947.601856][ T4786] ? __ia32_sys_read (fs/read_write.c:730) [ 1947.602067][ T4786] ? kernfs_fop_llseek (fs/kernfs/file.c:910) [ 1947.602268][ T4786] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 1947.602467][ T4786] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1)) [ 1947.602676][ T4786] ? irq_exit_rcu (kernel/softirq.c:741 (discriminator 37)) [ 1947.602878][ T4786] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1947.603124][ T4786] RIP: 0033:0x7f5cdec6cc5e [ 1947.603335][ T4786] Code: 4d 89 d8 e8 34 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 13 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 34 bd 00 00 call 0xbd3c 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 13 ff ff ff call 0xffffffffffffff4c 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 13 ff ff ff call 0xffffffffffffff22 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 1947.603922][ T4786] RSP: 002b:00007ffee16c10d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 1947.604209][ T4786] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f5cdec6cc5e [ 1947.604484][ T4786] RDX: 0000000000000004 RSI: 000055e82ece0b80 RDI: 0000000000000007 [ 1947.604764][ T4786] RBP: 00007ffee16c10e0 R08: 0000000000000000 R09: 0000000000000000 [ 1947.605046][ T4786] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f5cdeb08340 Finger prints: nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy:nsim_drv_remove:device_release_driver_internal