Oops: general protection fault, probably for non-canonical address 0xdffffc0000000035: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000001a8-0x00000000000001af] CPU: 1 UID: 0 PID: 7430 Comm: syz.1.359 Not tainted 6.16.0-rc4-syzkaller-00319-g05df91921da6 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:htb_deactivate net/sched/sch_htb.c:613 [inline] RIP: 0010:htb_qlen_notify+0x31/0xc0 net/sched/sch_htb.c:1489 Code: 41 56 41 55 41 54 53 49 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 3d 4b 3e f8 49 8d 9e a8 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 4d 8b 2b 31 ff 89 ee e8 5a 4f 3e f8 85 RSP: 0018:ffffc9001ce9f0f0 EFLAGS: 00010206 RAX: ffffffff89821353 RBX: 00000000000001a8 RCX: 0000000000080000 RDX: ffffc9000bdc9000 RSI: 0000000000000338 RDI: 0000000000000339 RBP: dffffc0000000000 R08: ffff8880253d0000 R09: 0000000000000002 R10: 00000000ffffffff R11: ffffffff89821330 R12: dffffc0000000000 R13: 0000000000000035 R14: 0000000000000000 R15: ffff8880304dc000 FS: 00007f9700d926c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000001ed030 CR3: 00000000322de000 CR4: 00000000003526f0 Call Trace: qdisc_tree_reduce_backlog+0x299/0x480 net/sched/sch_api.c:811 hhf_change+0x764/0xad0 net/sched/sch_hhf.c:571 hhf_init+0x213/0x950 net/sched/sch_hhf.c:597 qdisc_create+0x7a9/0xea0 net/sched/sch_api.c:1324 __tc_modify_qdisc net/sched/sch_api.c:1749 [inline] tc_modify_qdisc+0x1426/0x2010 net/sched/sch_api.c:1813 rtnetlink_rcv_msg+0x77c/0xb70 net/core/rtnetlink.c:6953 netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f96fff8e929 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:00007f9700d92038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f97001b5fa0 RCX: 00007f96fff8e929 RDX: 0000000000004000 RSI: 0000200000000280 RDI: 0000000000000004 RBP: 00007f9700010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f97001b5fa0 R15: 00007f97002dfa28 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:htb_deactivate net/sched/sch_htb.c:613 [inline] RIP: 0010:htb_qlen_notify+0x31/0xc0 net/sched/sch_htb.c:1489 Code: 41 56 41 55 41 54 53 49 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc ff df e8 3d 4b 3e f8 49 8d 9e a8 01 00 00 49 89 dd 49 c1 ed 03 <43> 0f b6 44 25 00 84 c0 75 4d 8b 2b 31 ff 89 ee e8 5a 4f 3e f8 85 RSP: 0018:ffffc9001ce9f0f0 EFLAGS: 00010206 RAX: ffffffff89821353 RBX: 00000000000001a8 RCX: 0000000000080000 RDX: ffffc9000bdc9000 RSI: 0000000000000338 RDI: 0000000000000339 RBP: dffffc0000000000 R08: ffff8880253d0000 R09: 0000000000000002 R10: 00000000ffffffff R11: ffffffff89821330 R12: dffffc0000000000 R13: 0000000000000035 R14: 0000000000000000 R15: ffff8880304dc000 FS: 00007f9700d926c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000001ed030 CR3: 00000000322de000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 41 56 push %r14 2: 41 55 push %r13 4: 41 54 push %r12 6: 53 push %rbx 7: 49 89 f6 mov %rsi,%r14 a: 49 89 ff mov %rdi,%r15 d: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 14: fc ff df 17: e8 3d 4b 3e f8 call 0xf83e4b59 1c: 49 8d 9e a8 01 00 00 lea 0x1a8(%r14),%rbx 23: 49 89 dd mov %rbx,%r13 26: 49 c1 ed 03 shr $0x3,%r13 * 2a: 43 0f b6 44 25 00 movzbl 0x0(%r13,%r12,1),%eax <-- trapping instruction 30: 84 c0 test %al,%al 32: 75 4d jne 0x81 34: 8b 2b mov (%rbx),%ebp 36: 31 ff xor %edi,%edi 38: 89 ee mov %ebp,%esi 3a: e8 5a 4f 3e f8 call 0xf83e4f99 3f: 85 .byte 0x85