====================================== | [ 14.915785][ T247] ================================================================== | [ 14.916186][ T247] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:733) | [ 14.916436][ T247] Read of size 1 at addr ffff88801180469c by task ip/247 | [ 14.916639][ T247] [ 14.916732][ T247] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.916734][ T247] Call Trace: [ 14.916736][ T247] [ 14.916738][ T247] dump_stack_lvl (lib/dump_stack.c:123) [ 14.916744][ T247] print_address_description.constprop.0 (mm/kasan/report.c:379) [ 14.916756][ T247] ? kobject_put (lib/kobject.c:733) [ 14.916761][ T247] print_report (mm/kasan/report.c:483) [ 14.916768][ T247] ? kobject_put (lib/kobject.c:733) [ 14.916772][ T247] ? kasan_addr_to_slab (./include/linux/mm.h:1245 mm/kasan/../slab.h:191 mm/kasan/common.c:47) [ 14.916775][ T247] ? kobject_put (lib/kobject.c:733) [ 14.916778][ T247] kasan_report (mm/kasan/report.c:597) [ 14.916781][ T247] ? kobject_put (lib/kobject.c:733) [ 14.916786][ T247] kobject_put (lib/kobject.c:733) [ 14.916789][ T247] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 14.916795][ T247] ? dev_ingress_queue_create (net/core/dev.c:12299) [ 14.916799][ T247] ? generic_xdp_install (net/core/dev.c:11630) [ 14.916802][ T247] ? unregister_netdevice_many (net/core/dev.c:12241) [ 14.916805][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.916813][ T247] rtnl_dellink (net/core/rtnetlink.c:3580) [ 14.916819][ T247] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 14.916838][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.916842][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.916851][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.916857][ T247] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 14.916861][ T247] ? __lock_release (kernel/locking/lockdep.c:5536) [ 14.916866][ T247] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 14.916869][ T247] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 14.916873][ T247] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 14.916876][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.916883][ T247] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 14.916888][ T247] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 14.916892][ T247] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 14.916898][ T247] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 14.916905][ T247] ? 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) [ 14.916910][ T247] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 14.916914][ T247] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 14.916917][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.916923][ T247] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 14.916927][ T247] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 14.916930][ T247] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 14.916938][ T247] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 14.916941][ T247] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 14.916955][ T247] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 14.916960][ T247] ? __copy_msghdr (net/socket.c:2556) [ 14.916971][ T247] ___sys_sendmsg (net/socket.c:2686) [ 14.916973][ T247] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 14.916976][ T247] ? __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) [ 14.916984][ T247] ? copy_msghdr_from_user (net/socket.c:2673) [ 14.916988][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.916992][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.916998][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.917001][ T247] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 14.917007][ T247] ? __lock_release (kernel/locking/lockdep.c:5536) [ 14.917013][ T247] __sys_sendmsg (net/socket.c:2716) [ 14.917015][ T247] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 14.917019][ T247] ? __sys_sendmsg_sock (net/socket.c:2701) [ 14.917026][ T247] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 14.917030][ T247] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 14.917036][ T247] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 14.917040][ T247] RIP: 0033:0x7fc069f941d7 [ 14.917045][ T247] 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) [ 14.917048][ T247] RSP: 002b:00007fff2dfd9708 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 14.917052][ T247] RAX: ffffffffffffffda RBX: 00007fff2dfd9e30 RCX: 00007fc069f941d7 [ 14.917054][ T247] RDX: 0000000000000000 RSI: 00007fff2dfd9770 RDI: 0000000000000005 [ 14.917056][ T247] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 14.917057][ T247] R10: 00007fc069e90f60 R11: 0000000000000246 R12: 0000000000000001 [ 14.917059][ T247] R13: 00000000690dffc4 R14: 0000000000499600 R15: 0000000000000000 | [ 14.945906][ T247] refcount_t: underflow; use-after-free. | [ 14.946175][ T247] WARNING: CPU: 0 PID: 247 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) | [ 14.946464][ T247] Modules linked in: netdevsim | [ 14.946990][ T247] Tainted: [B]=BAD_PAGE [ 14.947191][ T247] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.947410][ T247] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3)) [ 14.947623][ T247] Code: a2 b5 02 80 fb 01 0f 87 db 6e d8 fe 83 e3 01 0f 85 51 ff ff ff c6 05 c2 a2 b5 02 01 90 48 c7 c7 60 a8 85 96 e8 72 c3 17 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 20 69 a0 ff e9 ba fe ff ff All code ======== 0: a2 b5 02 80 fb 01 0f movabs %al,0xdb870f01fb8002b5 7: 87 db 9: 6e outsb %ds:(%rsi),(%dx) a: d8 fe fdivr %st(6),%st c: 83 e3 01 and $0x1,%ebx f: 0f 85 51 ff ff ff jne 0xffffffffffffff66 15: c6 05 c2 a2 b5 02 01 movb $0x1,0x2b5a2c2(%rip) # 0x2b5a2de 1c: 90 nop 1d: 48 c7 c7 60 a8 85 96 mov $0xffffffff9685a860,%rdi 24: e8 72 c3 17 ff call 0xffffffffff17c39b 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 20 69 a0 ff call 0xffffffffffa0695b 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 20 69 a0 ff call 0xffffffffffa06931 11: e9 ba fe ff ff jmp 0xfffffffffffffed0 [ 14.948267][ T247] RSP: 0018:ffffc900007371f0 EFLAGS: 00010286 [ 14.948482][ T247] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 14.948720][ T247] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001 [ 14.948988][ T247] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2e3e134 [ 14.949318][ T247] R10: 0000000000000003 R11: ffffc90000736d80 R12: 0000000000000001 [ 14.949564][ T247] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100 [ 14.949802][ T247] FS: 00007fc069dc6800(0000) GS:ffff88809db81000(0000) knlGS:0000000000000000 [ 14.950187][ T247] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.950400][ T247] CR2: 00007f04b81435f0 CR3: 00000000088ff002 CR4: 0000000000772ef0 [ 14.950640][ T247] PKRU: 55555554 [ 14.950766][ T247] Call Trace: [ 14.950896][ T247] [ 14.950980][ T247] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 14.951154][ T247] ? dev_ingress_queue_create (net/core/dev.c:12299) [ 14.951316][ T247] ? generic_xdp_install (net/core/dev.c:11630) [ 14.951494][ T247] ? unregister_netdevice_many (net/core/dev.c:12241) [ 14.951651][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.951816][ T247] rtnl_dellink (net/core/rtnetlink.c:3580) [ 14.951989][ T247] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 14.952209][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.952377][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.952698][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.952899][ T247] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956) [ 14.953059][ T247] ? __lock_release (kernel/locking/lockdep.c:5536) [ 14.953225][ T247] ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536) [ 14.953538][ T247] rtnetlink_rcv_msg (net/core/rtnetlink.c:6958) [ 14.953714][ T247] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 14.953926][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.954102][ T247] netlink_rcv_skb (net/netlink/af_netlink.c:2550) [ 14.954261][ T247] ? rtnl_port_fill (net/core/rtnetlink.c:6861) [ 14.954417][ T247] ? netlink_ack (net/netlink/af_netlink.c:2527) [ 14.954576][ T247] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340) [ 14.954761][ T247] ? 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) [ 14.955052][ T247] netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344) [ 14.955233][ T247] ? netlink_attachskb (net/netlink/af_netlink.c:1329) [ 14.955400][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.955560][ T247] netlink_sendmsg (net/netlink/af_netlink.c:1894) [ 14.955842][ T247] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 14.956010][ T247] ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361) [ 14.956181][ T247] ? netlink_unicast (net/netlink/af_netlink.c:1813) [ 14.956345][ T247] ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630) [ 14.956596][ T247] ? get_timestamp.constprop.0 (net/socket.c:2576) [ 14.956789][ T247] ? __copy_msghdr (net/socket.c:2556) [ 14.956957][ T247] ___sys_sendmsg (net/socket.c:2686) [ 14.957124][ T247] ? kasan_record_aux_stack (mm/kasan/generic.c:559) [ 14.957299][ T247] ? __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) [ 14.957534][ T247] ? copy_msghdr_from_user (net/socket.c:2673) [ 14.957695][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.957960][ T247] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.958132][ T247] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.958289][ T247] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65) [ 14.958449][ T247] ? __lock_release (kernel/locking/lockdep.c:5536) [ 14.958697][ T247] __sys_sendmsg (net/socket.c:2716) [ 14.958859][ T247] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148) [ 14.959060][ T247] ? __sys_sendmsg_sock (net/socket.c:2701) [ 14.959236][ T247] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 14.959487][ T247] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 14.959672][ T247] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 14.959915][ T247] RIP: 0033:0x7fc069f941d7 [ 14.960224][ T247] 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) [ 14.960866][ T247] RSP: 002b:00007fff2dfd9708 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 14.961215][ T247] RAX: ffffffffffffffda RBX: 00007fff2dfd9e30 RCX: 00007fc069f941d7 [ 14.961452][ T247] RDX: 0000000000000000 RSI: 00007fff2dfd9770 RDI: 0000000000000005 [ 14.961723][ T247] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 14.962084][ T247] R10: 00007fc069e90f60 R11: 0000000000000246 R12: 0000000000000001 [ 14.962326][ T247] R13: 00000000690dffc4 R14: 0000000000499600 R15: 0000000000000000 | [ 16.962204][ T222] ------------[ cut here ]------------ | [ 16.962476][ T222] kernel BUG at net/core/net-sysfs.c:2246! | [ 16.962756][ T222] Oops: invalid opcode: 0000 [#1] SMP KASAN | [ 16.963504][ T222] Tainted: [B]=BAD_PAGE, [W]=WARN [ 16.963739][ T222] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.964018][ T222] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242) [ 16.964259][ T222] Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 20 48 8b bb d0 fa ff ff e8 9c be cd fe 48 89 ef 5b 5d e9 62 cb cd fe 90 <0f> 0b e8 0a a2 d4 fe eb bc e8 63 a2 d4 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 d0 fa ff ff mov -0x530(%rbx),%rdi 1a: e8 9c be cd fe call 0xfffffffffecdbebb 1f: 48 89 ef mov %rbp,%rdi 22: 5b pop %rbx 23: 5d pop %rbp 24: e9 62 cb cd fe jmp 0xfffffffffecdcb8b 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: e8 0a a2 d4 fe call 0xfffffffffed4a23b 31: eb bc jmp 0xffffffffffffffef 33: e8 63 a2 d4 fe call 0xfffffffffed4a29b 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 0a a2 d4 fe call 0xfffffffffed4a211 7: eb bc jmp 0xffffffffffffffc5 9: e8 63 a2 d4 fe call 0xfffffffffed4a271 e: eb d9 jmp 0xffffffffffffffe9 10: 90 nop 11: f3 0f 1e fa endbr64 15: 0f .byte 0xf [ 16.965058][ T222] RSP: 0018:ffffc90000aa78a8 EFLAGS: 00010297 [ 16.965347][ T222] RAX: 0000000000000000 RBX: ffff8880100fa660 RCX: ffffffff9644cb51 [ 16.965683][ T222] RDX: 1ffff1100201f4c8 RSI: ffffffff9685f0c0 RDI: ffff8880100fa640 [ 16.966032][ T222] RBP: ffff8880100fa000 R08: 0000000000000001 R09: ffffed100201f4d3 [ 16.966368][ T222] R10: ffff8880100fa69b R11: ffffffff93c000b0 R12: ffff8880106e7a00 [ 16.966709][ T222] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100 [ 16.967052][ T222] FS: 00007ffbd1da7000(0000) GS:ffff88809dd01000(0000) knlGS:0000000000000000 [ 16.967431][ T222] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.967719][ T222] CR2: 0000560ab97f5d61 CR3: 0000000011895003 CR4: 0000000000772ef0 [ 16.968067][ T222] PKRU: 55555554 [ 16.968248][ T222] Call Trace: [ 16.968418][ T222] [ 16.968537][ T222] device_release (drivers/base/core.c:2570) [ 16.968770][ T222] kobject_cleanup (lib/kobject.c:693) [ 16.969004][ T222] netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670) [ 16.969234][ T222] ? generic_xdp_install (net/core/dev.c:11630) [ 16.969457][ T222] ? kfree (mm/slub.c:6630 mm/slub.c:6837) [ 16.969635][ T222] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim [ 16.969882][ T222] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim [ 16.970183][ T222] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim [ 16.970459][ T222] nsim_drv_remove (drivers/net/netdevsim/dev.c:1724) netdevsim [ 16.970695][ T222] device_release_driver_internal (drivers/base/dd.c:1276 drivers/base/dd.c:1297) [ 16.970982][ T222] ? klist_put (lib/klist.c:220) [ 16.971170][ T222] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) [ 16.971384][ T222] device_del (drivers/base/core.c:3879) [ 16.971561][ T222] ? __device_link_del (drivers/base/core.c:3833) [ 16.971793][ T222] ? kernfs_fop_write_iter (fs/kernfs/file.c:77 fs/kernfs/file.c:344) [ 16.972035][ T222] device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920) [ 16.972262][ T222] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim [ 16.972544][ T222] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/linux/rcupdate.h:1195 fs/sysfs/file.c:24) [ 16.972770][ T222] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 16.973006][ T222] ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim [ 16.973298][ T222] ? sysfs_file_kobj (fs/sysfs/file.c:26) [ 16.973523][ T222] ? sysfs_file_ops (fs/sysfs/file.c:135) [ 16.973746][ T222] kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356) [ 16.973978][ T222] vfs_write (fs/read_write.c:594 fs/read_write.c:686) [ 16.974163][ T222] ? kernel_write (fs/read_write.c:667) [ 16.974377][ T222] ? lock_vma_under_rcu (mm/mmap_lock.c:259) [ 16.974612][ T222] ? __handle_mm_fault (mm/memory.c:6454) [ 16.974846][ T222] ksys_write (fs/read_write.c:738) [ 16.975020][ T222] ? __ia32_sys_read (fs/read_write.c:728) [ 16.975244][ T222] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:143 ./include/linux/mmap_lock.h:182 arch/x86/mm/fault.c:1338) [ 16.975474][ T222] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 16.975711][ T222] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 16.975989][ T222] RIP: 0033:0x7ffbd1ea7257 [ 16.976225][ T222] 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 [ 16.977040][ T222] RSP: 002b:00007ffe6d17cc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 16.977380][ T222] RAX: ffffffffffffffda RBX: 00007ffbd1fa3780 RCX: 00007ffbd1ea7257 [ 16.977727][ T222] RDX: 0000000000000004 RSI: 0000560ab97f5d60 RDI: 0000000000000001 [ 16.978066][ T222] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007ffbd1f59d20 [ 16.978401][ T222] R10: 00007ffbd1f59c20 R11: 0000000000000246 R12: 0000000000000004 Finger prints: netdev_release:device_release:kobject_cleanup:netdev_run_todo:nsim_destroy refcount_warn_saturate:netdev_run_todo:rtnl_dellink:rtnetlink_rcv_msg:netlink_rcv_skb print_report:kasan_report:kobject_put:netdev_run_todo:rtnl_dellink