====================================== | [ 30.827712][ T188] printk: console [netcon_ext0] disabled | [ 31.020376][ T188] ------------[ cut here ]------------ | [ 31.020667][ T188] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#2: bash/188 | [ 31.021079][ T188] Modules linked in: netconsole netdevsim [ 31.021766][ T188] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 31.022021][ T188] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim [ 31.022302][ T188] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 47 06 00 00 48 8b 3b e8 84 17 ec c6 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 e2 22 30 c6 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 47 06 test %eax,0x6(%rdi) 14: 00 00 add %al,(%rax) 16: 48 8b 3b mov (%rbx),%rdi 19: e8 84 17 ec c6 call 0xffffffffc6ec17a2 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 e2 22 30 c6 call 0xffffffffc6302322 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 e2 22 30 c6 call 0xffffffffc63022f8 [ 31.022912][ T188] RSP: 0018:ffa00000008f79b8 EFLAGS: 00010293 [ 31.023190][ T188] RAX: 0000000000000000 RBX: ff1100000a60ad00 RCX: ff1100000a60b448 [ 31.023475][ T188] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 [ 31.023759][ T188] RBP: ff1100000a60b448 R08: ff1100000a60b448 R09: 0000000000000000 [ 31.024070][ T188] R10: 1fe22000014c1689 R11: 0000000000000001 R12: ff1100000c336c98 [ 31.024367][ T188] R13: dffffc0000000000 R14: ff1100000c336800 R15: ffffffffc04ae380 [ 31.024651][ T188] FS: 00007f2406a0abc0(0000) GS:ff110000ab585000(0000) knlGS:0000000000000000 [ 31.024976][ T188] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.025264][ T188] CR2: 000055c9d4546b4c CR3: 000000000dc24006 CR4: 0000000000771ef0 [ 31.025555][ T188] PKRU: 55555554 [ 31.025724][ T188] Call Trace: [ 31.025893][ T188] [ 31.026031][ T188] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 31.026274][ T188] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim [ 31.026526][ T188] ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1)) [ 31.026732][ T188] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim [ 31.026986][ T188] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim [ 31.027220][ T188] device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307) [ 31.027469][ T188] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 31.027676][ T188] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623) [ 31.027889][ T188] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 31.028130][ T188] device_del (drivers/base/core.c:3879) [ 31.028312][ T188] ? __device_link_del (drivers/base/core.c:3833) [ 31.028528][ T188] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 31.028736][ T188] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 31.028948][ T188] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 31.029221][ T188] ? 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)) [ 31.029433][ T188] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 31.029686][ T188] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 31.029899][ T188] ? sysfs_kf_write (fs/sysfs/file.c:139) [ 31.030138][ T188] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 31.030360][ T188] ? kernfs_ops (fs/kernfs/file.c:312) [ 31.030532][ T188] new_sync_write (fs/read_write.c:596 (discriminator 1)) [ 31.030746][ T188] ? new_sync_read (fs/read_write.c:586) [ 31.030958][ T188] ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) [ 31.031199][ T188] ? ksys_write (fs/read_write.c:741) [ 31.031417][ T188] vfs_write (fs/read_write.c:688) [ 31.031591][ T188] ksys_write (fs/read_write.c:741) [ 31.031762][ T188] ? __ia32_sys_read (fs/read_write.c:730) [ 31.031972][ T188] ? do_raw_spin_unlock (./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:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 31.032214][ T188] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 31.032429][ T188] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1)) [ 31.032644][ T188] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 31.032856][ T188] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 31.033122][ T188] RIP: 0033:0x7f2406a7ac5e [ 31.033350][ T188] 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 [ 31.033966][ T188] RSP: 002b:00007ffc67075910 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 31.034296][ T188] RAX: ffffffffffffffda RBX: 00007f2406bf65c0 RCX: 00007f2406a7ac5e [ 31.034588][ T188] RDX: 0000000000000004 RSI: 000055c9d459a690 RDI: 0000000000000001 [ 31.034880][ T188] RBP: 00007ffc67075920 R08: 0000000000000000 R09: 0000000000000000 [ 31.035214][ T188] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 Finger prints: nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy:nsim_drv_remove:device_release_driver_internal