====================================== | [ 23.865926][ T327] ================================================================== | [ 23.866404][ T327] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:733) | [ 23.866849][ T327] Read of size 1 at addr ffff888005b2268c by task ip/327 | [ 23.867165][ T327] [ 23.867325][ T327] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.867328][ T327] Call Trace: [ 23.867331][ T327] [ 23.867334][ T327] dump_stack_lvl (lib/dump_stack.c:123) [ 23.867341][ T327] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 23.867351][ T327] ? kobject_put (lib/kobject.c:733) [ 23.867356][ T327] print_report (mm/kasan/report.c:483) [ 23.867361][ T327] ? kobject_put (lib/kobject.c:733) [ 23.867366][ T327] ? kasan_addr_to_slab (./include/linux/mm.h:1245 mm/kasan/../slab.h:191 mm/kasan/common.c:47) [ 23.867371][ T327] ? kobject_put (lib/kobject.c:733) [ 23.867375][ T327] kasan_report (mm/kasan/report.c:597) [ 23.867381][ T327] ? kobject_put (lib/kobject.c:733) [ 23.867390][ T327] kobject_put (lib/kobject.c:733) [ 23.867394][ T327] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 23.867402][ T327] ? dev_ingress_queue_create (net/core/dev.c:12299) [ 23.867406][ T327] ? generic_xdp_install (net/core/dev.c:11630) [ 23.867413][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.867421][ T327] rtnl_dellink (net/core/rtnetlink.c:3580) [ 23.867428][ T327] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 23.867461][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.867467][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.867476][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.867481][ T327] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 23.867484][ T327] ? __lock_release (kernel/locking/lockdep.c:5536) [ 23.867491][ T327] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 23.867497][ T327] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 23.867503][ T327] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 23.867507][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.867518][ T327] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 23.867523][ T327] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 23.867529][ T327] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 23.867540][ T327] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 23.867545][ T327] ? 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) [ 23.867551][ T327] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 23.867558][ T327] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 23.867565][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.867572][ T327] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 23.867580][ T327] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 23.867586][ T327] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 23.867593][ T327] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 23.867598][ T327] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 23.867605][ T327] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 23.867610][ T327] ? __copy_msghdr (net/socket.c:2556) [ 23.867621][ T327] ___sys_sendmsg (net/socket.c:2686) [ 23.867624][ T327] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 23.867628][ T327] ? __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) [ 23.867634][ T327] ? copy_msghdr_from_user (net/socket.c:2673) [ 23.867640][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.867647][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.867655][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.867660][ T327] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 23.867666][ T327] ? __lock_release (kernel/locking/lockdep.c:5536) [ 23.867675][ T327] __sys_sendmsg (net/socket.c:2716) [ 23.867678][ T327] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 23.867683][ T327] ? __sys_sendmsg_sock (net/socket.c:2701) [ 23.867695][ T327] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 23.867701][ T327] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 23.867708][ T327] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 23.867713][ T327] RIP: 0033:0x7f2eba0161d7 [ 23.867720][ T327] 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) [ 23.867724][ T327] RSP: 002b:00007ffdff69a808 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 23.867730][ T327] RAX: ffffffffffffffda RBX: 00007ffdff69af30 RCX: 00007f2eba0161d7 [ 23.867733][ T327] RDX: 0000000000000000 RSI: 00007ffdff69a870 RDI: 0000000000000005 [ 23.867735][ T327] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 23.867738][ T327] R10: 00007f2eb9f12f60 R11: 0000000000000246 R12: 0000000000000002 [ 23.867740][ T327] R13: 00000000690de675 R14: 0000000000499600 R15: 0000000000000000 | [ 23.912914][ T327] refcount_t: underflow; use-after-free. | [ 23.913209][ T327] WARNING: CPU: 3 PID: 327 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 23.913668][ T327] Modules linked in: geneve vxlan ip6_udp_tunnel udp_tunnel netdevsim | [ 23.914967][ T327] Tainted: [B]=BAD_PAGE [ 23.915175][ T327] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.915686][ T327] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 23.916047][ T327] 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 25 b3 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 25 b3 mov $0xffffffffb3258d20,%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 [ 23.917162][ T327] RSP: 0018:ffffc900008171f0 EFLAGS: 00010286 [ 23.917504][ T327] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 23.917908][ T327] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001 [ 23.918317][ T327] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff677e134 [ 23.918712][ T327] R10: 0000000000000003 R11: ffffc90000816d80 R12: 0000000000000001 [ 23.919104][ T327] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100 [ 23.919521][ T327] FS: 00007f2eb9e48800(0000) GS:ffff88808137c000(0000) knlGS:0000000000000000 [ 23.919987][ T327] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.920489][ T327] CR2: 00005566dbf9ddec CR3: 0000000008f13003 CR4: 0000000000772ef0 [ 23.921065][ T327] PKRU: 55555554 [ 23.921277][ T327] Call Trace: [ 23.921633][ T327] [ 23.921771][ T327] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 23.922045][ T327] ? dev_ingress_queue_create (net/core/dev.c:12299) [ 23.922475][ T327] ? generic_xdp_install (net/core/dev.c:11630) [ 23.922739][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.923009][ T327] rtnl_dellink (net/core/rtnetlink.c:3580) [ 23.923274][ T327] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 23.923612][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.923871][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.924296][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.924546][ T327] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 23.924794][ T327] ? __lock_release (kernel/locking/lockdep.c:5536) [ 23.925038][ T327] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 23.925356][ T327] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 23.925608][ T327] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 23.925855][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.926119][ T327] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 23.926386][ T327] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 23.926643][ T327] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 23.926905][ T327] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 23.927165][ T327] ? 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) [ 23.927430][ T327] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 23.927690][ T327] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 23.927951][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.928236][ T327] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 23.928657][ T327] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 23.928917][ T327] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 23.929178][ T327] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 23.929447][ T327] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 23.929852][ T327] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 23.930161][ T327] ? __copy_msghdr (net/socket.c:2556) [ 23.930426][ T327] ___sys_sendmsg (net/socket.c:2686) [ 23.930681][ T327] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 23.931088][ T327] ? __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) [ 23.931410][ T327] ? copy_msghdr_from_user (net/socket.c:2673) [ 23.931661][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.932057][ T327] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 23.932318][ T327] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 23.932566][ T327] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 23.932823][ T327] ? __lock_release (kernel/locking/lockdep.c:5536) [ 23.933232][ T327] __sys_sendmsg (net/socket.c:2716) [ 23.933479][ T327] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 23.933788][ T327] ? __sys_sendmsg_sock (net/socket.c:2701) [ 23.934042][ T327] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 23.934302][ T327] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 23.934575][ T327] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 23.934893][ T327] RIP: 0033:0x7f2eba0161d7 [ 23.935157][ T327] 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) [ 23.936225][ T327] RSP: 002b:00007ffdff69a808 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 23.936758][ T327] RAX: ffffffffffffffda RBX: 00007ffdff69af30 RCX: 00007f2eba0161d7 [ 23.937148][ T327] RDX: 0000000000000000 RSI: 00007ffdff69a870 RDI: 0000000000000005 [ 23.937535][ T327] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 23.938066][ T327] R10: 00007f2eb9f12f60 R11: 0000000000000246 R12: 0000000000000002 [ 23.938449][ T327] R13: 00000000690de675 R14: 0000000000499600 R15: 0000000000000000 | [ 30.366950][ T423] ------------[ cut here ]------------ | [ 30.368569][ T423] kernel BUG at net/core/net-sysfs.c:2246! | [ 30.368980][ T423] Oops: invalid opcode: 0000 [#1] SMP KASAN | [ 30.370019][ T423] Tainted: [B]=BAD_PAGE, [W]=WARN [ 30.370326][ T423] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 30.370652][ T423] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242) [ 30.370904][ T423] 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 [ 30.371666][ T423] RSP: 0018:ffffc90000557a28 EFLAGS: 00010297 [ 30.371939][ T423] RAX: 0000000000000000 RBX: ffff88800c2e2650 RCX: ffffffffb2f02b51 [ 30.372268][ T423] RDX: 1ffff1100185c4c6 RSI: ffffffffb325d540 RDI: ffff88800c2e2630 [ 30.372593][ T423] RBP: ffff88800c2e2000 R08: 0000000000000001 R09: ffffed100185c4d1 [ 30.373057][ T423] R10: ffff88800c2e268b R11: ffffffffb16c9c4c R12: ffff88800a634a00 [ 30.373527][ T423] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100 [ 30.373989][ T423] FS: 00007f2d06a0f740(0000) GS:ffff8880811fc000(0000) knlGS:0000000000000000 [ 30.374531][ T423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.374923][ T423] CR2: 00007f1885c50270 CR3: 000000000da75004 CR4: 0000000000772ef0 [ 30.375383][ T423] PKRU: 55555554 [ 30.375616][ T423] Call Trace: [ 30.375848][ T423] [ 30.376006][ T423] device_release (drivers/base/core.c:2570) [ 30.376318][ T423] kobject_cleanup (lib/kobject.c:693) [ 30.376630][ T423] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 30.376917][ T423] ? generic_xdp_install (net/core/dev.c:11630) [ 30.377125][ T423] ? kfree (mm/slub.c:6630 mm/slub.c:6837) [ 30.377286][ T423] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim [ 30.377508][ T423] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim [ 30.377790][ T423] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim [ 30.378053][ T423] nsim_drv_remove (drivers/net/netdevsim/dev.c:1724) netdevsim [ 30.378273][ T423] device_release_driver_internal (drivers/base/dd.c:1276 drivers/base/dd.c:1297) [ 30.378533][ T423] ? klist_put (lib/klist.c:220) [ 30.378695][ T423] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) [ 30.378902][ T423] device_del (drivers/base/core.c:3879) [ 30.379064][ T423] ? __device_link_del (drivers/base/core.c:3833) [ 30.379275][ T423] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 30.379487][ T423] nsim_bus_exit (drivers/net/netdevsim/bus.c:522) netdevsim [ 30.379727][ T423] nsim_module_exit (drivers/net/netdevsim/netdev.c:607) netdevsim [ 30.379939][ T423] __do_sys_delete_module (kernel/module/main.c:836) [ 30.380151][ T423] ? module_flags (kernel/module/main.c:778) [ 30.380367][ T423] ? alloc_file_clone (fs/file_table.c:571) [ 30.380674][ T423] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 30.380990][ T423] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 30.381299][ T423] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 30.381695][ T423] RIP: 0033:0x7f2d06b3e6eb [ 30.381980][ T423] Code: 73 01 c3 48 8b 0d 0d 97 0e 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d dd 96 0e 00 f7 d8 64 89 01 48 All code ======== 0: 73 01 jae 0x3 2: c3 ret 3: 48 8b 0d 0d 97 0e 00 mov 0xe970d(%rip),%rcx # 0xe9717 a: f7 d8 neg %eax c: 64 89 01 mov %eax,%fs:(%rcx) f: 48 83 c8 ff or $0xffffffffffffffff,%rax 13: c3 ret 14: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 1b: 00 00 00 1e: 90 nop 1f: f3 0f 1e fa endbr64 23: b8 b0 00 00 00 mov $0xb0,%eax 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d dd 96 0e 00 mov 0xe96dd(%rip),%rcx # 0xe9717 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d dd 96 0e 00 mov 0xe96dd(%rip),%rcx # 0xe96ed 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W [ 30.382897][ T423] RSP: 002b:00007fffbc489958 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 30.383290][ T423] RAX: ffffffffffffffda RBX: 000055f8d9e1d960 RCX: 00007f2d06b3e6eb [ 30.383683][ T423] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055f8d9e1d9c8 [ 30.384069][ T423] RBP: 000055f8d9e1d960 R08: 0000000000000000 R09: 0000000000000000 [ 30.384456][ T423] R10: 00007f2d06bcdac0 R11: 0000000000000206 R12: 000055f8d9e1d9c8 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