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BUG: KASAN: slab-use-after-free in advance_sched+0xa70/0xac0 net/sched/sch_taprio.c:942
Read of size 8 at addr ffff0000ca9db910 by task syz-executor.2/6625

CPU: 0 UID: 0 PID: 6625 Comm: syz-executor.2 Not tainted 6.11.0-rc7-syzkaller-00105-g5f5673607153 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:319
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:326
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:119
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x198/0x538 mm/kasan/report.c:488
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 advance_sched+0xa70/0xac0 net/sched/sch_taprio.c:942
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x494/0xce0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x2c0/0xb64 kernel/time/hrtimer.c:1815
 timer_handler drivers/clocksource/arm_arch_timer.c:674 [inline]
 arch_timer_handler_virt+0x74/0x88 drivers/clocksource/arm_arch_timer.c:685
 handle_percpu_devid_irq+0x174/0x308 kernel/irq/chip.c:942
 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
 handle_irq_desc kernel/irq/irqdesc.c:692 [inline]
 generic_handle_domain_irq+0x7c/0xc4 kernel/irq/irqdesc.c:748
 __gic_handle_irq drivers/irqchip/irq-gic-v3.c:843 [inline]
 __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:894 [inline]
 gic_handle_irq+0x6c/0x190 drivers/irqchip/irq-gic-v3.c:938
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889
 do_interrupt_handler+0xd4/0x138 arch/arm64/kernel/entry-common.c:310
 __el1_irq arch/arm64/kernel/entry-common.c:536 [inline]
 el1_interrupt+0x34/0x68 arch/arm64/kernel/entry-common.c:551
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:556
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:594
 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline]
 seqcount_lockdep_reader_access include/linux/seqlock.h:74 [inline]
 get_counters net/ipv4/netfilter/ip_tables.c:757 [inline]
 alloc_counters+0x2e4/0x580 net/ipv4/netfilter/ip_tables.c:804
 copy_entries_to_user net/ipv4/netfilter/arp_tables.c:681 [inline]
 get_entries net/ipv4/netfilter/arp_tables.c:867 [inline]
 do_arpt_get_ctl+0xb84/0x159c net/ipv4/netfilter/arp_tables.c:1461
 nf_getsockopt+0x264/0x284 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x1d0/0x380 net/ipv4/ip_sockglue.c:1777
 tcp_getsockopt+0xcc/0xe8 net/ipv4/tcp.c:4409
 sock_common_getsockopt+0xa8/0xc4 net/core/sock.c:3708
 do_sock_getsockopt+0x390/0x5d8 net/socket.c:2386
 __sys_getsockopt+0x120/0x19c net/socket.c:2415
 __do_sys_getsockopt net/socket.c:2425 [inline]
 __se_sys_getsockopt net/socket.c:2422 [inline]
 __arm64_sys_getsockopt+0xb8/0xd4 net/socket.c:2422
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Allocated by task 10952:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __kmalloc_cache_noprof+0x244/0x374 mm/slub.c:4193
 kmalloc_noprof include/linux/slab.h:681 [inline]
 kzalloc_noprof include/linux/slab.h:807 [inline]
 taprio_change+0xd54/0x2b98 net/sched/sch_taprio.c:1859
 qdisc_change net/sched/sch_api.c:1417 [inline]
 tc_modify_qdisc+0x1474/0x1870 net/sched/sch_api.c:1747
 rtnetlink_rcv_msg+0x630/0xa9c net/core/rtnetlink.c:6647
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2550
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6665
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x7a4/0xa8c net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x56c/0x840 net/socket.c:2597
 ___sys_sendmsg net/socket.c:2651 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2680
 __do_sys_sendmsg net/socket.c:2689 [inline]
 __se_sys_sendmsg net/socket.c:2687 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2687
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Freed by task 6626:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:579
 poison_slab_object+0x128/0x180 mm/kasan/common.c:240
 __kasan_slab_free+0x3c/0x70 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2256 [inline]
 slab_free mm/slub.c:4477 [inline]
 kfree+0x154/0x3e0 mm/slub.c:4598
 taprio_free_sched_cb+0x158/0x178 net/sched/sch_taprio.c:201
 rcu_do_batch kernel/rcu/tree.c:2569 [inline]
 rcu_core+0x888/0x1b3c kernel/rcu/tree.c:2843
 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2860
 handle_softirqs+0x2e4/0xbfc kernel/softirq.c:554
 __do_softirq+0x14/0x20 kernel/softirq.c:588

Last potentially related work creation:
 kasan_save_stack+0x40/0x6c mm/kasan/common.c:47
 __kasan_record_aux_stack+0xd0/0xec mm/kasan/generic.c:541
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:551
 __call_rcu_common kernel/rcu/tree.c:3106 [inline]
 call_rcu+0x104/0xb08 kernel/rcu/tree.c:3210
 taprio_change+0x259c/0x2b98 net/sched/sch_taprio.c:1968
 qdisc_change net/sched/sch_api.c:1417 [inline]
 tc_modify_qdisc+0x1474/0x1870 net/sched/sch_api.c:1747
 rtnetlink_rcv_msg+0x630/0xa9c net/core/rtnetlink.c:6647
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2550
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6665
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x7a4/0xa8c net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x56c/0x840 net/socket.c:2597
 ___sys_sendmsg net/socket.c:2651 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2680
 __do_sys_sendmsg net/socket.c:2689 [inline]
 __se_sys_sendmsg net/socket.c:2687 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2687
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

The buggy address belongs to the object at ffff0000ca9db800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 272 bytes inside of
 freed 512-byte region [ffff0000ca9db800, ffff0000ca9dba00)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10a9d8
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 05ffc00000000040 ffff0000c0001c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000001fdffffff 0000000000000000
head: 05ffc00000000040 ffff0000c0001c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000001fdffffff 0000000000000000
head: 05ffc00000000002 fffffdffc32a7601 ffffffffffffffff 0000000000000000
head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000ca9db800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000ca9db880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000ca9db900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff0000ca9db980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000ca9dba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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