Unable to handle kernel paging request at virtual address dfff800000000036 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000036] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 5144 Comm: syz.3.216 Not tainted 5.15.187-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : htb_deactivate net/sched/sch_htb.c:609 [inline] pc : htb_qlen_notify+0x3c/0xc8 net/sched/sch_htb.c:1507 lr : htb_qlen_notify+0x2c/0xc8 net/sched/sch_htb.c:1504 sp : ffff80001fa26da0 x29: ffff80001fa26da0 x28: 1ffff000025a8aa8 x27: dfff800000000000 x26: 0000000000000000 x25: ffff800012d45548 x24: 0000000000000036 x23: dfff800000000000 x22: ffff8000162edce0 x21: ffff0000dbfbc000 x20: 0000000000000000 x19: 00000000000001b0 x18: 0000000000000201 x17: 0000000000000002 x16: ffff8000082bf708 x15: 00000000ffffffff x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000080000 x11: 0000000000003a12 x10: ffff800023a89000 x9 : 0000000000000003 x8 : 0000000000003a13 x7 : ffff80000f8d3b08 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff0000dbfbc000 Call trace: htb_deactivate net/sched/sch_htb.c:609 [inline] htb_qlen_notify+0x3c/0xc8 net/sched/sch_htb.c:1507 qdisc_tree_reduce_backlog+0x250/0x410 net/sched/sch_api.c:799 sfq_change net/sched/sch_sfq.c:737 [inline] sfq_init+0x1338/0x1da4 net/sched/sch_sfq.c:801 qdisc_create+0x6e4/0xf24 net/sched/sch_api.c:1260 tc_modify_qdisc+0x8bc/0x1308 net/sched/sch_api.c:-1 rtnetlink_rcv_msg+0x9d4/0xd04 net/core/rtnetlink.c:5650 netlink_rcv_skb+0x208/0x3c4 net/netlink/af_netlink.c:2489 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5668 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x60c/0x89c net/netlink/af_netlink.c:1337 netlink_sendmsg+0x6e8/0x9cc net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x61c/0x920 net/socket.c:2436 ___sys_sendmsg+0x1d0/0x240 net/socket.c:2490 __sys_sendmsg net/socket.c:2519 [inline] __do_sys_sendmsg net/socket.c:2528 [inline] __se_sys_sendmsg net/socket.c:2526 [inline] __arm64_sys_sendmsg+0x1a8/0x254 net/socket.c:2526 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 9106c293 d343fe78 12000a69 11000d29 (38f76b08) ---[ end trace 3b10bea810d5c1c1 ]--- ---------------- Code disassembly (best guess): 0: 9106c293 add x19, x20, #0x1b0 4: d343fe78 lsr x24, x19, #3 8: 12000a69 and w9, w19, #0x7 c: 11000d29 add w9, w9, #0x3 * 10: 38f76b08 ldrsb w8, [x24, x23] <-- trapping instruction