====================================== | [ 24.693314][ T299] Test #3 from CPU2: netcons_uUaFH | [ 25.004672][ T189] ------------[ cut here ]------------ | [ 25.005011][ T189] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#0: bash/189 | [ 25.005497][ T189] Modules linked in: netconsole netdevsim [ 25.006225][ T189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.006528][ T189] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim [ 25.006866][ T189] 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 4c de 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 90 dd 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 4c de call 0xffffffffde4c17a2 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 90 dd call 0xffffffffdd902322 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 90 dd call 0xffffffffdd9022f8 [ 25.007747][ T189] RSP: 0018:ffa00000005979b8 EFLAGS: 00010293 [ 25.008051][ T189] RAX: 0000000000000000 RBX: ff1100000ca12d00 RCX: ff1100000ca13448 [ 25.008411][ T189] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 [ 25.008781][ T189] RBP: ff1100000ca13448 R08: ff1100000ca13448 R09: 0000000000000000 [ 25.009149][ T189] R10: 1fe2200001942689 R11: 0000000000000001 R12: ff1100000b9d3c98 [ 25.009506][ T189] R13: dffffc0000000000 R14: ff1100000b9d3800 R15: ffffffffc0808380 [ 25.009877][ T189] FS: 00007f668f53abc0(0000) GS:ff11000093e85000(0000) knlGS:0000000000000000 [ 25.010300][ T189] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.010714][ T189] CR2: 0000557de7d350ac CR3: 000000000baca005 CR4: 0000000000771ef0 [ 25.011086][ T189] PKRU: 55555554 [ 25.011268][ T189] Call Trace: [ 25.011448][ T189] [ 25.011571][ T189] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 25.011828][ T189] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim [ 25.012129][ T189] ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1)) [ 25.012369][ T189] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim [ 25.012680][ T189] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim [ 25.012923][ T189] device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307) [ 25.013231][ T189] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 25.013470][ T189] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623) [ 25.013717][ T189] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 25.013956][ T189] device_del (drivers/base/core.c:3879) [ 25.014134][ T189] ? __device_link_del (drivers/base/core.c:3833) [ 25.014381][ T189] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 25.014627][ T189] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 25.014856][ T189] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 25.015154][ T189] ? 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)) [ 25.015385][ T189] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 25.015686][ T189] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 25.015914][ T189] ? sysfs_kf_write (fs/sysfs/file.c:139) [ 25.016155][ T189] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 25.016390][ T189] ? kernfs_ops (fs/kernfs/file.c:312) [ 25.016565][ T189] new_sync_write (fs/read_write.c:596 (discriminator 1)) [ 25.016817][ T189] ? new_sync_read (fs/read_write.c:586) [ 25.017055][ T189] ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870) [ 25.017289][ T189] ? ksys_write (fs/read_write.c:741) [ 25.017529][ T189] vfs_write (fs/read_write.c:688) [ 25.017722][ T189] ksys_write (fs/read_write.c:741) [ 25.017905][ T189] ? __ia32_sys_read (fs/read_write.c:730) [ 25.018150][ T189] ? 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) [ 25.018384][ T189] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1)) [ 25.018633][ T189] do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1)) [ 25.018871][ T189] ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3)) [ 25.019116][ T189] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 25.019411][ T189] RIP: 0033:0x7f668f5aac5e [ 25.019673][ T189] 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 [ 25.020512][ T189] RSP: 002b:00007ffcff3cf3a0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 25.020873][ T189] RAX: ffffffffffffffda RBX: 00007f668f7265c0 RCX: 00007f668f5aac5e [ 25.021228][ T189] RDX: 0000000000000004 RSI: 0000557de7d90dc0 RDI: 0000000000000001 [ 25.021582][ T189] RBP: 00007ffcff3cf3b0 R08: 0000000000000000 R09: 0000000000000000 [ 25.021939][ T189] 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