====================================== | [ 177.359217][ T3527] 8021q: adding VLAN 0 to HW filter on device nsim2025p2 | [ 177.477324][ T3482] ------------[ cut here ]------------ | [ 177.477571][ T3482] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#0: netdev-l2addr.s/3482 | [ 177.478075][ T3482] Modules linked in: netdevsim psample act_gact sch_fq vxlan ip6_gre gre xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core xt_length nft_compat act_ct nf_flow_table nf_tables nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 cls_flower sch_ingress [ 177.480284][ T3482] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 177.480478][ T3482] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim [ 177.480680][ T3482] 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 83 97 d4 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 de d5 d3 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: 83 97 d4 31 c0 48 8d adcl $0xffffff8d,0x48c031d4(%rdi) 22: ab stos %eax,(%rdi) 23: 48 07 rex.W (bad) 25: 00 00 add %al,(%rax) 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 de d5 d3 call 0xffffffffd3d5def2 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 de d5 d3 call 0xffffffffd3d5dec8 [ 177.481348][ T3482] RSP: 0018:ffa0000000f5f9b8 EFLAGS: 00010293 [ 177.481541][ T3482] RAX: 0000000000000000 RBX: ff1100000ff2ad40 RCX: ff1100000ff2b488 [ 177.481767][ T3482] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 [ 177.482017][ T3482] RBP: ff1100000ff2b488 R08: ff1100000ff2b488 R09: 0000000000000000 [ 177.482357][ T3482] R10: 1fe2200001fe5691 R11: 0000000000000001 R12: ff1100001722ec98 [ 177.482581][ T3482] R13: dffffc0000000000 R14: ff1100001722e800 R15: ffffffffc08cd380 [ 177.482809][ T3482] FS: 00007f0cb339dbc0(0000) GS:ff110000d3fd5000(0000) knlGS:0000000000000000 [ 177.483188][ T3482] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 177.483379][ T3482] CR2: 00005610fca53058 CR3: 000000000a2ca001 CR4: 0000000000771ef0 [ 177.483609][ T3482] PKRU: 55555554 [ 177.483723][ T3482] Call Trace: [ 177.483837][ T3482] [ 177.483920][ T3482] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 177.484192][ T3482] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim [ 177.484383][ T3482] ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1)) [ 177.484534][ T3482] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim [ 177.484725][ T3482] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim [ 177.484875][ T3482] device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307) [ 177.485070][ T3482] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 177.485335][ T3482] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623) [ 177.485485][ T3482] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 177.485631][ T3482] device_del (drivers/base/core.c:3879) [ 177.485749][ T3482] ? __device_link_del (drivers/base/core.c:3833) [ 177.485905][ T3482] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 177.486055][ T3482] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 177.486270][ T3482] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 177.486459][ T3482] ? 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)) [ 177.486607][ T3482] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 177.486792][ T3482] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 177.486945][ T3482] ? sysfs_kf_write (fs/sysfs/file.c:139) [ 177.487172][ T3482] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 177.487324][ T3482] ? kernfs_ops (fs/kernfs/file.c:312) [ 177.487437][ T3482] new_sync_write (fs/read_write.c:596 (discriminator 1)) [ 177.487589][ T3482] ? new_sync_read (fs/read_write.c:586) [ 177.487739][ T3482] ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) [ 177.487889][ T3482] ? ksys_write (fs/read_write.c:741) [ 177.488047][ T3482] vfs_write (fs/read_write.c:688) [ 177.488254][ T3482] ksys_write (fs/read_write.c:741) [ 177.488369][ T3482] ? __ia32_sys_read (fs/read_write.c:730) [ 177.488519][ T3482] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:949 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:401 (discriminator 4) ./include/linux/refcount.h:389 (discriminator 4) ./include/linux/refcount.h:432 (discriminator 4) ./include/linux/mmap_lock.h:196 (discriminator 4) ./include/linux/mmap_lock.h:217 (discriminator 4) ./include/linux/mmap_lock.h:264 (discriminator 4) arch/x86/mm/fault.c:1336 (discriminator 4)) [ 177.488670][ T3482] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 177.488823][ T3482] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 177.488976][ T3482] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1)) [ 177.489227][ T3482] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 177.489377][ T3482] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 177.489563][ T3482] RIP: 0033:0x7f0cb340dc5e [ 177.489722][ T3482] 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 [ 177.490355][ T3482] RSP: 002b:00007ffdaa222f40 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 177.490582][ T3482] RAX: ffffffffffffffda RBX: 00007f0cb35895c0 RCX: 00007f0cb340dc5e [ 177.490807][ T3482] RDX: 0000000000000005 RSI: 00005610fca52050 RDI: 0000000000000001 [ 177.491033][ T3482] RBP: 00007ffdaa222f50 R08: 0000000000000000 R09: 0000000000000000 [ 177.491354][ T3482] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000005 Finger prints: nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy:nsim_drv_remove:device_release_driver_internal