netdevsim netdevsim0 netdevsim2 (unregistering): unset [0, 0] type 1 family 0 port 8472 - 0 netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 Oops: general protection fault, probably for non-canonical address 0xe07f9e1900000004: 0000 [#1] SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x03fd10c800000020-0x03fd10c800000027] CPU: 1 UID: 0 PID: 1305 Comm: syz.0.7965 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:mini_qdisc_pair_swap+0x165/0x190 net/sched/sch_generic.c:1596 Code: 74 08 4c 89 f7 e8 7b 0a dc f8 4d 89 26 48 85 db 74 9d e8 6e 25 76 f8 e8 59 59 5c f8 49 89 c6 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 4c 0a dc f8 4c 89 33 48 83 c4 08 RSP: 0018:ffffc9000b8b6c88 EFLAGS: 00010202 RAX: 007fa21900000004 RBX: 03fd10c800000020 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff8d76be8f RDI: 00000000ffffffff RBP: ffff8880544e8378 R08: ffffffff8f805a77 R09: 1ffffffff1f00b4e R10: dffffc0000000000 R11: fffffbfff1f00b4f R12: 1ffff110088fa000 R13: ffff8880544e8328 R14: 000000000002cdec R15: dffffc0000000000 FS: 00007fc980fd66c0(0000) GS:ffff8881261b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe7b53156c0 CR3: 000000007617a000 CR4: 00000000003526f0 Call Trace: tcf_chain_head_change_item net/sched/cls_api.c:522 [inline] tcf_chain0_head_change_cb_del+0x24c/0x380 net/sched/cls_api.c:969 tcf_block_put_ext+0x129/0x390 net/sched/cls_api.c:1559 clsact_destroy+0x25e/0x820 net/sched/sch_ingress.c:302 __qdisc_destroy+0x153/0x400 net/sched/sch_generic.c:1077 dev_shutdown+0x233/0x440 net/sched/sch_generic.c:1492 unregister_netdevice_many_notify+0x117c/0x2310 net/core/dev.c:12369 unregister_netdevice_many net/core/dev.c:12444 [inline] unregister_netdevice_queue+0x317/0x350 net/core/dev.c:12258 unregister_netdevice include/linux/netdevice.h:3405 [inline] nsim_destroy+0x1e5/0x680 drivers/net/netdevsim/netdev.c:1180 __nsim_dev_port_del+0x14d/0x1b0 drivers/net/netdevsim/dev.c:1528 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1540 [inline] nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1763 nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:1038 devlink_reload+0x1b6/0x8d0 net/devlink/dev.c:461 devlink_nl_reload_doit+0x9b7/0xc60 net/devlink/dev.c:584 genl_family_rcv_msg_doit+0x215/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:733 ____sys_sendmsg+0x505/0x820 net/socket.c:2608 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2662 __sys_sendmsg net/socket.c:2694 [inline] __do_sys_sendmsg net/socket.c:2699 [inline] __se_sys_sendmsg net/socket.c:2697 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2697 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc98018f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc980fd6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc9803e5fa0 RCX: 00007fc98018f749 RDX: 0000000000000030 RSI: 0000200000000000 RDI: 0000000000000006 RBP: 00007fc980213f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc9803e6038 R14: 00007fc9803e5fa0 R15: 00007ffff9a13248 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mini_qdisc_pair_swap+0x165/0x190 net/sched/sch_generic.c:1596 Code: 74 08 4c 89 f7 e8 7b 0a dc f8 4d 89 26 48 85 db 74 9d e8 6e 25 76 f8 e8 59 59 5c f8 49 89 c6 48 83 c3 20 48 89 d8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 df e8 4c 0a dc f8 4c 89 33 48 83 c4 08 RSP: 0018:ffffc9000b8b6c88 EFLAGS: 00010202 RAX: 007fa21900000004 RBX: 03fd10c800000020 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff8d76be8f RDI: 00000000ffffffff RBP: ffff8880544e8378 R08: ffffffff8f805a77 R09: 1ffffffff1f00b4e R10: dffffc0000000000 R11: fffffbfff1f00b4f R12: 1ffff110088fa000 R13: ffff8880544e8328 R14: 000000000002cdec R15: dffffc0000000000 FS: 00007fc980fd66c0(0000) GS:ffff8881260b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c26600d CR3: 000000007617a000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 74 08 je 0xa 2: 4c 89 f7 mov %r14,%rdi 5: e8 7b 0a dc f8 call 0xf8dc0a85 a: 4d 89 26 mov %r12,(%r14) d: 48 85 db test %rbx,%rbx 10: 74 9d je 0xffffffaf 12: e8 6e 25 76 f8 call 0xf8762585 17: e8 59 59 5c f8 call 0xf85c5975 1c: 49 89 c6 mov %rax,%r14 1f: 48 83 c3 20 add $0x20,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 4c 0a dc f8 call 0xf8dc0a85 39: 4c 89 33 mov %r14,(%rbx) 3c: 48 83 c4 08 add $0x8,%rsp