====================================== | [ 16.826632][ T248] ================================================================== | [ 16.827133][ T248] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:733) | [ 16.827593][ T248] Read of size 1 at addr ffff888009cb968c by task ip/248 | [ 16.827964][ T248] [ 16.828121][ T248] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.828124][ T248] Call Trace: [ 16.828130][ T248] [ 16.828133][ T248] dump_stack_lvl (lib/dump_stack.c:123) [ 16.828142][ T248] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 16.828158][ T248] ? kobject_put (lib/kobject.c:733) [ 16.828163][ T248] print_report (mm/kasan/report.c:483) [ 16.828168][ T248] ? kobject_put (lib/kobject.c:733) [ 16.828172][ T248] ? kasan_addr_to_slab (./include/linux/mm.h:1245 mm/kasan/../slab.h:191 mm/kasan/common.c:47) [ 16.828178][ T248] ? kobject_put (lib/kobject.c:733) [ 16.828183][ T248] kasan_report (mm/kasan/report.c:597) [ 16.828190][ T248] ? kobject_put (lib/kobject.c:733) [ 16.828199][ T248] kobject_put (lib/kobject.c:733) [ 16.828205][ T248] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 16.828212][ T248] ? dev_ingress_queue_create (net/core/dev.c:12299) [ 16.828218][ T248] ? generic_xdp_install (net/core/dev.c:11630) [ 16.828224][ T248] ? kfree (mm/slub.c:6630 mm/slub.c:6837) [ 16.828235][ T248] rtnl_dellink (net/core/rtnetlink.c:3580) [ 16.828243][ T248] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 16.828281][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.828293][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.828303][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.828309][ T248] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 16.828314][ T248] ? __lock_release (kernel/locking/lockdep.c:5536) [ 16.828321][ T248] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 16.828327][ T248] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 16.828334][ T248] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 16.828339][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.828351][ T248] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 16.828359][ T248] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 16.828365][ T248] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 16.828379][ T248] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 16.828384][ T248] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 16.828392][ T248] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 16.828400][ T248] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 16.828408][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.828417][ T248] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 16.828426][ T248] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 16.828433][ T248] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 16.828442][ T248] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 16.828448][ T248] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 16.828457][ T248] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 16.828463][ T248] ? __copy_msghdr (net/socket.c:2556) [ 16.828476][ T248] ___sys_sendmsg (net/socket.c:2686) [ 16.828480][ T248] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 16.828484][ T248] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125) [ 16.828493][ T248] ? copy_msghdr_from_user (net/socket.c:2673) [ 16.828501][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.828508][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.828518][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.828524][ T248] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 16.828532][ T248] ? __lock_release (kernel/locking/lockdep.c:5536) [ 16.828543][ T248] __sys_sendmsg (net/socket.c:2716) [ 16.828547][ T248] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 16.828553][ T248] ? __sys_sendmsg_sock (net/socket.c:2701) [ 16.828565][ T248] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 16.828571][ T248] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 16.828579][ T248] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 16.828585][ T248] RIP: 0033:0x7f93654291d7 [ 16.828591][ T248] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 16.828595][ T248] RSP: 002b:00007ffceb75c2a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 16.828604][ T248] RAX: ffffffffffffffda RBX: 00007ffceb75c9d0 RCX: 00007f93654291d7 [ 16.828608][ T248] RDX: 0000000000000000 RSI: 00007ffceb75c310 RDI: 0000000000000005 [ 16.828611][ T248] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 16.828614][ T248] R10: 00007f9365325f60 R11: 0000000000000246 R12: 0000000000000001 [ 16.828617][ T248] R13: 00000000690df178 R14: 0000000000499600 R15: 0000000000000000 | [ 16.858583][ T248] refcount_t: underflow; use-after-free. | [ 16.858879][ T248] WARNING: CPU: 2 PID: 248 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 16.859293][ T248] Modules linked in: macsec netdevsim | [ 16.860043][ T248] Tainted: [B]=BAD_PAGE [ 16.860220][ T248] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.860529][ T248] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 16.860832][ T248] Code: 10 93 02 80 fb 01 0f 87 8b b8 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 fb 0f 93 02 01 90 48 c7 c7 20 8d a5 b5 e8 02 be 18 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 b0 63 a1 ff e9 ba fe ff ff All code ======== 0: 10 93 02 80 fb 01 adc %dl,0x1fb8002(%rbx) 6: 0f 87 8b b8 d9 fe ja 0xfffffffffed9b897 c: 83 e3 01 and $0x1,%ebx f: 0f 85 51 ff ff ff jne 0xffffffffffffff66 15: c6 05 fb 0f 93 02 01 movb $0x1,0x2930ffb(%rip) # 0x2931017 1c: 90 nop 1d: 48 c7 c7 20 8d a5 b5 mov $0xffffffffb5a58d20,%rdi 24: e8 02 be 18 ff call 0xffffffffff18be2b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 90 nop 2e: e9 33 ff ff ff jmp 0xffffffffffffff66 33: 48 89 df mov %rbx,%rdi 36: e8 b0 63 a1 ff call 0xffffffffffa163eb 3b: e9 ba fe ff ff jmp 0xfffffffffffffefa Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 90 nop 4: e9 33 ff ff ff jmp 0xffffffffffffff3c 9: 48 89 df mov %rbx,%rdi c: e8 b0 63 a1 ff call 0xffffffffffa163c1 11: e9 ba fe ff ff jmp 0xfffffffffffffed0 [ 16.861563][ T248] RSP: 0018:ffffc900007e71f0 EFLAGS: 00010286 [ 16.861855][ T248] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 16.862197][ T248] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001 [ 16.862523][ T248] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff6c7e134 [ 16.862879][ T248] R10: 0000000000000003 R11: ffffc900007e6d80 R12: 0000000000000001 [ 16.863214][ T248] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100 [ 16.863581][ T248] FS: 00007f936525b800(0000) GS:ffff88807eafc000(0000) knlGS:0000000000000000 [ 16.863997][ T248] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.864326][ T248] CR2: 00007ffd0a188ff8 CR3: 000000000499e004 CR4: 0000000000772ef0 [ 16.864664][ T248] PKRU: 55555554 [ 16.864865][ T248] Call Trace: [ 16.865049][ T248] [ 16.865200][ T248] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 16.865461][ T248] ? dev_ingress_queue_create (net/core/dev.c:12299) [ 16.865683][ T248] ? generic_xdp_install (net/core/dev.c:11630) [ 16.865924][ T248] ? kfree (mm/slub.c:6630 mm/slub.c:6837) [ 16.866142][ T248] rtnl_dellink (net/core/rtnetlink.c:3580) [ 16.866386][ T248] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 16.866688][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.866974][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.867210][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.867439][ T248] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 16.867711][ T248] ? __lock_release (kernel/locking/lockdep.c:5536) [ 16.867967][ T248] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 16.868267][ T248] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 16.868520][ T248] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 16.868767][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.869041][ T248] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 16.869267][ T248] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 16.869517][ T248] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 16.869758][ T248] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 16.870033][ T248] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [ 16.870264][ T248] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 16.870535][ T248] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 16.870770][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.871012][ T248] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 16.871251][ T248] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 16.871503][ T248] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 16.871729][ T248] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 16.871962][ T248] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 16.872184][ T248] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 16.872468][ T248] ? __copy_msghdr (net/socket.c:2556) [ 16.872726][ T248] ___sys_sendmsg (net/socket.c:2686) [ 16.872971][ T248] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 16.873218][ T248] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125) [ 16.873513][ T248] ? copy_msghdr_from_user (net/socket.c:2673) [ 16.873779][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.874045][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 16.874287][ T248] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 16.874554][ T248] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 16.874817][ T248] ? __lock_release (kernel/locking/lockdep.c:5536) [ 16.875092][ T248] __sys_sendmsg (net/socket.c:2716) [ 16.875356][ T248] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 16.875678][ T248] ? __sys_sendmsg_sock (net/socket.c:2701) [ 16.875953][ T248] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 16.876187][ T248] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 16.876457][ T248] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 16.876755][ T248] RIP: 0033:0x7f93654291d7 [ 16.877045][ T248] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0e (bad) 1: 00 f7 add %dh,%bh 3: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 16.877866][ T248] RSP: 002b:00007ffceb75c2a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 16.878244][ T248] RAX: ffffffffffffffda RBX: 00007ffceb75c9d0 RCX: 00007f93654291d7 [ 16.878596][ T248] RDX: 0000000000000000 RSI: 00007ffceb75c310 RDI: 0000000000000005 [ 16.878986][ T248] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 16.879368][ T248] R10: 00007f9365325f60 R11: 0000000000000246 R12: 0000000000000001 [ 16.879725][ T248] R13: 00000000690df178 R14: 0000000000499600 R15: 0000000000000000 | [ 19.637341][ T229] ------------[ cut here ]------------ | [ 19.637652][ T229] kernel BUG at net/core/net-sysfs.c:2246! | [ 19.637935][ T229] Oops: invalid opcode: 0000 [#1] SMP KASAN | [ 19.638624][ T229] Tainted: [B]=BAD_PAGE, [W]=WARN [ 19.638824][ T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.639072][ T229] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242) [ 19.639288][ T229] Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 20 48 8b bb e0 fa ff ff e8 8c f4 d7 fe 48 89 ef 5b 5d e9 52 01 d8 fe 90 <0f> 0b e8 fa d7 de fe eb bc e8 53 d8 de fe eb d9 90 f3 0f 1e fa 0f All code ======== 0: 00 00 add %al,(%rax) 2: 00 fc add %bh,%ah 4: ff lcall (bad) 5: df 48 89 fisttps -0x77(%rax) 8: fa cli 9: 48 c1 ea 03 shr $0x3,%rdx d: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 11: 75 20 jne 0x33 13: 48 8b bb e0 fa ff ff mov -0x520(%rbx),%rdi 1a: e8 8c f4 d7 fe call 0xfffffffffed7f4ab 1f: 48 89 ef mov %rbp,%rdi 22: 5b pop %rbx 23: 5d pop %rbp 24: e9 52 01 d8 fe jmp 0xfffffffffed8017b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: e8 fa d7 de fe call 0xfffffffffeded82b 31: eb bc jmp 0xffffffffffffffef 33: e8 53 d8 de fe call 0xfffffffffeded88b 38: eb d9 jmp 0x13 3a: 90 nop 3b: f3 0f 1e fa endbr64 3f: 0f .byte 0xf Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e8 fa d7 de fe call 0xfffffffffeded801 7: eb bc jmp 0xffffffffffffffc5 9: e8 53 d8 de fe call 0xfffffffffeded861 e: eb d9 jmp 0xffffffffffffffe9 10: 90 nop 11: f3 0f 1e fa endbr64 15: 0f .byte 0xf [ 19.639976][ T229] RSP: 0018:ffffc90000ab78a8 EFLAGS: 00010297 [ 19.640229][ T229] RAX: 0000000000000000 RBX: ffff88800b83a650 RCX: ffffffffb5702b51 [ 19.640515][ T229] RDX: 1ffff110017074c6 RSI: ffffffffb5a5d540 RDI: ffff88800b83a630 [ 19.640801][ T229] RBP: ffff88800b83a000 R08: 0000000000000001 R09: ffffed10017074d1 [ 19.641087][ T229] R10: ffff88800b83a68b R11: ffffc90000ab7550 R12: ffff88800ddb3e00 [ 19.641387][ T229] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100 [ 19.641671][ T229] FS: 00007f031af5b000(0000) GS:ffff88807e9fc000(0000) knlGS:0000000000000000 [ 19.642022][ T229] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.642299][ T229] CR2: 00007f031b10df73 CR3: 000000000a26d003 CR4: 0000000000772ef0 [ 19.642606][ T229] PKRU: 55555554 [ 19.642748][ T229] Call Trace: [ 19.642893][ T229] [ 19.642994][ T229] device_release (drivers/base/core.c:2570) [ 19.643192][ T229] kobject_cleanup (lib/kobject.c:693) [ 19.643429][ T229] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 19.643632][ T229] ? generic_xdp_install (net/core/dev.c:11630) [ 19.643828][ T229] ? kfree (mm/slub.c:6630 mm/slub.c:6837) [ 19.643979][ T229] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim [ 19.644230][ T229] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim [ 19.644477][ T229] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim [ 19.644724][ T229] nsim_drv_remove (drivers/net/netdevsim/dev.c:1724) netdevsim [ 19.644930][ T229] device_release_driver_internal (drivers/base/dd.c:1276 drivers/base/dd.c:1297) [ 19.645187][ T229] ? klist_put (lib/klist.c:220) [ 19.645355][ T229] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) [ 19.645542][ T229] device_del (drivers/base/core.c:3879) [ 19.645709][ T229] ? __device_link_del (drivers/base/core.c:3833) [ 19.645895][ T229] ? kernfs_fop_write_iter (fs/kernfs/file.c:77 fs/kernfs/file.c:344) [ 19.646088][ T229] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 19.646289][ T229] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 19.646526][ T229] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/linux/rcupdate.h:1195 fs/sysfs/file.c:24) [ 19.646718][ T229] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 19.646906][ T229] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 19.647147][ T229] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 19.647346][ T229] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 19.647531][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 19.647740][ T229] vfs_write (fs/read_write.c:594 fs/read_write.c:686) [ 19.647888][ T229] ? expand_files (fs/file.c:296) [ 19.648107][ T229] ? kernel_write (fs/read_write.c:667) [ 19.648329][ T229] ? expand_fdtable.constprop.0 (fs/file.c:291) [ 19.648566][ T229] ? fput_close_sync (fs/file_table.c:583) [ 19.648759][ T229] ksys_write (fs/read_write.c:738) [ 19.648899][ T229] ? __ia32_sys_read (fs/read_write.c:728) [ 19.649134][ T229] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 19.649341][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 19.649577][ T229] RIP: 0033:0x7f031b05b257 [ 19.649788][ T229] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 All code ======== 0: 0f 00 (bad) 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b7 jmp 0xffffffffffffffc7 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 01 00 00 00 mov $0x1,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 48 89 54 24 18 mov %rdx,0x18(%rsp) 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 74 24 je 0x64 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 48 89 54 24 18 mov %rdx,0x18(%rsp) 12: 48 rex.W 13: 89 .byte 0x89 14: 74 24 je 0x3a [ 19.650482][ T229] RSP: 002b:00007ffe31a88aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 19.650778][ T229] RAX: ffffffffffffffda RBX: 00007f031b157780 RCX: 00007f031b05b257 [ 19.651090][ T229] RDX: 0000000000000004 RSI: 0000559e436065a0 RDI: 0000000000000001 [ 19.651400][ T229] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007f031b10dd20 [ 19.651701][ T229] R10: 00007f031b10dc20 R11: 0000000000000246 R12: 0000000000000004 Finger prints: print_report:kasan_report:kobject_put:netdev_run_todo:rtnl_dellink refcount_warn_saturate:netdev_run_todo:rtnl_dellink:rtnetlink_rcv_msg:netlink_rcv_skb netdev_release:device_release:kobject_cleanup:netdev_run_todo:nsim_destroy