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:00007ffe161b1d88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f01989e5fa0 RCX: 00007f019878f749 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007ffe161b1de0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f01989e5fa0 R14: 00007f01989e5fa0 R15: 0000000000000003 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 0 UID: 0 PID: 6180 Comm: syz.1.104 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:226 [inline] RIP: 0010:hrtimer_active kernel/time/hrtimer.c:1703 [inline] RIP: 0010:hrtimer_try_to_cancel+0x7d/0x420 kernel/time/hrtimer.c:1352 Code: ae 12 00 48 8b 5c 24 08 48 8b 44 24 10 42 80 3c 30 00 74 08 48 89 df e8 91 ce 78 00 4c 8b 3b 49 8d 5f 10 49 89 dc 49 c1 ec 03 <43> 0f b6 04 34 84 c0 0f 85 bf 00 00 00 8b 2b 89 ee 83 e6 01 31 ff RSP: 0018:ffffc90004227218 EFLAGS: 00010202 RAX: 1ffff1100b8d6860 RBX: 0000000000000010 RCX: 1ffff1100b8d6861 RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: ffff88805c6b42d0 RBP: ffffc90004227410 R08: 0000000000000dc0 R09: 00000000ffffffff R10: dffffc0000000000 R11: ffffffff896d0900 R12: 0000000000000002 R13: 00000000fffffff4 R14: dffffc0000000000 R15: 0000000000000000 FS: 00005555594da500(0000) GS:ffff888125e1e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000240 CR3: 00000000762da000 CR4: 00000000003526f0 Call Trace: hrtimer_cancel+0x16/0x50 kernel/time/hrtimer.c:1481 cake_destroy+0x28/0x100 net/sched/sch_cake.c:2798 qdisc_create+0xaa3/0xea0 net/sched/sch_api.c:1353 __tc_modify_qdisc net/sched/sch_api.c:1753 [inline] tc_modify_qdisc+0x1547/0x2020 net/sched/sch_api.c:1817 rtnetlink_rcv_msg+0x77c/0xb70 net/core/rtnetlink.c:6967 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 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:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x820 net/socket.c:2592 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2681 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f019878f749 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:00007ffe161b1d88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f01989e5fa0 RCX: 00007f019878f749 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007ffe161b1de0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f01989e5fa0 R14: 00007f01989e5fa0 R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:226 [inline] RIP: 0010:hrtimer_active kernel/time/hrtimer.c:1703 [inline] RIP: 0010:hrtimer_try_to_cancel+0x7d/0x420 kernel/time/hrtimer.c:1352 Code: ae 12 00 48 8b 5c 24 08 48 8b 44 24 10 42 80 3c 30 00 74 08 48 89 df e8 91 ce 78 00 4c 8b 3b 49 8d 5f 10 49 89 dc 49 c1 ec 03 <43> 0f b6 04 34 84 c0 0f 85 bf 00 00 00 8b 2b 89 ee 83 e6 01 31 ff RSP: 0018:ffffc90004227218 EFLAGS: 00010202 RAX: 1ffff1100b8d6860 RBX: 0000000000000010 RCX: 1ffff1100b8d6861 RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: ffff88805c6b42d0 RBP: ffffc90004227410 R08: 0000000000000dc0 R09: 00000000ffffffff R10: dffffc0000000000 R11: ffffffff896d0900 R12: 0000000000000002 R13: 00000000fffffff4 R14: dffffc0000000000 R15: 0000000000000000 FS: 00005555594da500(0000) GS:ffff888125e1e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000240 CR3: 00000000762da000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 ret 32: 48 c7 c1 a8 ff ff ff mov $0xffffffffffffffa8,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W