BUG: unable to handle page fault for address: 000000000001004a #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10974f067 P4D 10974f067 PUD 109b0e067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 3390 Comm: syz-executor.0 Not tainted 6.7.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:hfsc_tcf_block+0x2a/0x50 net/sched/sch_hfsc.c:1265 Code: f3 0f 1e fa 55 48 89 fd 53 48 89 f3 e8 df 6d f7 fe 31 ff 48 89 de e8 75 69 f7 fe 48 85 db 74 11 e8 cb 6d f7 fe e8 c6 6d f7 fe <48> 8b 43 58 5b 5d c3 e8 ba 6d f7 fe 48 8d 9d d0 02 00 00 e8 ae 6d RSP: 0018:ffffc90001a6b8e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000000000fff2 RCX: ffffffff8235b12b RDX: ffff8881073e1b40 RSI: ffffffff8235b13a RDI: 0000000000000007 RBP: ffff88810833e000 R08: 0000000000000007 R09: 0000000000000000 R10: 000000000000fff2 R11: 0000000000000001 R12: ffff88810338d000 R13: ffffffff82fab3c0 R14: ffffc90001a6b9a0 R15: ffffffff83a0d8a0 FS: 00007f9acb5f06c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000001004a CR3: 000000010978a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: qdisc_block_add_dev net/sched/sch_api.c:1190 [inline] qdisc_create+0x31f/0x980 net/sched/sch_api.c:1390 tc_modify_qdisc+0x714/0xd00 net/sched/sch_api.c:1788 rtnetlink_rcv_msg+0x268/0x670 net/core/rtnetlink.c:6615 netlink_rcv_skb+0x91/0x1d0 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x43f/0x570 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x341/0x690 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x52/0xa0 net/socket.c:745 ____sys_sendmsg+0x337/0x3e0 net/socket.c:2584 ___sys_sendmsg+0xc9/0x130 net/socket.c:2638 __sys_sendmsg+0xa6/0x120 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f9acba6dce9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9acb5f00c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9acbb8cf80 RCX: 00007f9acba6dce9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 00007f9acbaba47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f9acbb8cf80 R15: 00007ffc2af412c8 Modules linked in: CR2: 000000000001004a ---[ end trace 0000000000000000 ]--- RIP: 0010:hfsc_tcf_block+0x2a/0x50 net/sched/sch_hfsc.c:1265 Code: f3 0f 1e fa 55 48 89 fd 53 48 89 f3 e8 df 6d f7 fe 31 ff 48 89 de e8 75 69 f7 fe 48 85 db 74 11 e8 cb 6d f7 fe e8 c6 6d f7 fe <48> 8b 43 58 5b 5d c3 e8 ba 6d f7 fe 48 8d 9d d0 02 00 00 e8 ae 6d RSP: 0018:ffffc90001a6b8e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000000000fff2 RCX: ffffffff8235b12b RDX: ffff8881073e1b40 RSI: ffffffff8235b13a RDI: 0000000000000007 RBP: ffff88810833e000 R08: 0000000000000007 R09: 0000000000000000 R10: 000000000000fff2 R11: 0000000000000001 R12: ffff88810338d000 R13: ffffffff82fab3c0 R14: ffffc90001a6b9a0 R15: ffffffff83a0d8a0 FS: 00007f9acb5f06c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000001004a CR3: 000000010978a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: f3 0f 1e fa endbr64 4: 55 push %rbp 5: 48 89 fd mov %rdi,%rbp 8: 53 push %rbx 9: 48 89 f3 mov %rsi,%rbx c: e8 df 6d f7 fe call 0xfef76df0 11: 31 ff xor %edi,%edi 13: 48 89 de mov %rbx,%rsi 16: e8 75 69 f7 fe call 0xfef76990 1b: 48 85 db test %rbx,%rbx 1e: 74 11 je 0x31 20: e8 cb 6d f7 fe call 0xfef76df0 25: e8 c6 6d f7 fe call 0xfef76df0 * 2a: 48 8b 43 58 mov 0x58(%rbx),%rax <-- trapping instruction 2e: 5b pop %rbx 2f: 5d pop %rbp 30: c3 ret 31: e8 ba 6d f7 fe call 0xfef76df0 36: 48 8d 9d d0 02 00 00 lea 0x2d0(%rbp),%rbx 3d: e8 .byte 0xe8 3e: ae scas %es:(%rdi),%al 3f: 6d insl (%dx),%es:(%rdi)