====================================== | [ 1507.811380][T15003] 8021q: adding VLAN 0 to HW filter on device eni0np1 | [ 1509.208697][T11562] ------------[ cut here ]------------ | [ 1509.208961][T11562] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x780 [netdevsim], CPU#3: rtnetlink.sh/11562 | [ 1509.209313][T11562] Modules linked in: netdevsim psample macsec cls_u32 sch_htb geneve vxlan ip6_gre ip_gre gre xfrm_user xt_policy xt_HL nft_compat nf_tables amt [ 1509.210108][T11562] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1509.210296][T11562] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim [ 1509.210497][T11562] 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 a3 57 dd 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 fe 95 dc 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: a3 57 dd 31 c0 48 8d movabs %eax,0x48ab8d48c031dd57 22: ab 48 24: 07 (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 fe 95 dc call 0xffffffffdc95fef2 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 fe 95 dc call 0xffffffffdc95fec8 [ 1509.211042][T11562] RSP: 0018:ffa0000002e4f9b8 EFLAGS: 00010293 [ 1509.211240][T11562] RAX: 0000000000000000 RBX: ff11000015bc2d40 RCX: ff11000015bc3488 [ 1509.211467][T11562] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 [ 1509.211715][T11562] RBP: ff11000015bc3488 R08: ff11000015bc3488 R09: 0000000000000000 [ 1509.212064][T11562] R10: 1fe2200002b78691 R11: 0000000000000001 R12: ff1100001a6aec98 [ 1509.212295][T11562] R13: dffffc0000000000 R14: ff1100001a6ae800 R15: ffffffffc0566380 [ 1509.212521][T11562] FS: 00007fea6cc93bc0(0000) GS:ff110000cb555000(0000) knlGS:0000000000000000 [ 1509.212789][T11562] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1509.212985][T11562] CR2: 0000555fa55af940 CR3: 000000000c009004 CR4: 0000000000771ef0 [ 1509.213212][T11562] PKRU: 55555554 [ 1509.213328][T11562] Call Trace: [ 1509.213441][T11562] [ 1509.213519][T11562] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 1509.213681][T11562] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim [ 1509.213874][T11562] ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1)) [ 1509.214026][T11562] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim [ 1509.214213][T11562] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim [ 1509.214363][T11562] device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307) [ 1509.214554][T11562] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 1509.214707][T11562] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623) [ 1509.214860][T11562] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 1509.215008][T11562] device_del (drivers/base/core.c:3879) [ 1509.215124][T11562] ? __device_link_del (drivers/base/core.c:3833) [ 1509.215287][T11562] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 1509.215434][T11562] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 1509.215588][T11562] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 1509.215776][T11562] ? 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)) [ 1509.215929][T11562] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 1509.216117][T11562] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 1509.216266][T11562] ? sysfs_kf_write (fs/sysfs/file.c:139) [ 1509.216417][T11562] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 1509.216568][T11562] ? kernfs_ops (fs/kernfs/file.c:312) [ 1509.216685][T11562] new_sync_write (fs/read_write.c:596 (discriminator 1)) [ 1509.216842][T11562] ? new_sync_read (fs/read_write.c:586) [ 1509.217098][T11562] ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) [ 1509.217248][T11562] ? ksys_write (fs/read_write.c:741) [ 1509.217401][T11562] vfs_write (fs/read_write.c:688) [ 1509.217514][T11562] ksys_write (fs/read_write.c:741) [ 1509.217631][T11562] ? __ia32_sys_read (fs/read_write.c:730) [ 1509.217778][T11562] ? 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)) [ 1509.217933][T11562] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 1509.218083][T11562] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 1509.218232][T11562] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1)) [ 1509.218383][T11562] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 1509.218532][T11562] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1509.218721][T11562] RIP: 0033:0x7fea6cd03c5e [ 1509.218885][T11562] 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 [ 1509.219416][T11562] RSP: 002b:00007ffcf23acd80 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 1509.219648][T11562] RAX: ffffffffffffffda RBX: 00007fea6ce7f5c0 RCX: 00007fea6cd03c5e [ 1509.219881][T11562] RDX: 0000000000000002 RSI: 0000555fa55af940 RDI: 0000000000000001 [ 1509.220108][T11562] RBP: 00007ffcf23acd90 R08: 0000000000000000 R09: 0000000000000000 [ 1509.220333][T11562] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 Finger prints: nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy:nsim_drv_remove:device_release_driver_internal