==================================================================
BUG: KASAN: slab-use-after-free in min_deadline_update kernel/sched/fair.c:818 [inline]
BUG: KASAN: slab-use-after-free in min_deadline_cb_propagate kernel/sched/fair.c:825 [inline]
BUG: KASAN: slab-use-after-free in reweight_entity+0x8c7/0xa60 kernel/sched/fair.c:3660
Read of size 8 at addr ffff888024b13c28 by task syz-executor.0/12905
CPU: 0 PID: 12905 Comm: syz-executor.0 Not tainted 6.6.0-rc6-syzkaller-00217-gcd8892c07876 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
min_deadline_update kernel/sched/fair.c:818 [inline]
min_deadline_cb_propagate kernel/sched/fair.c:825 [inline]
reweight_entity+0x8c7/0xa60 kernel/sched/fair.c:3660
entity_tick kernel/sched/fair.c:5317 [inline]
task_tick_fair+0xee/0xcd0 kernel/sched/fair.c:12392
scheduler_tick+0x210/0x650 kernel/sched/core.c:5657
update_process_times+0x19f/0x220 kernel/time/timer.c:2076
tick_sched_handle+0x8e/0x170 kernel/time/tick-sched.c:254
tick_sched_timer+0xe9/0x110 kernel/time/tick-sched.c:1492
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x647/0xc10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x42/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:tcp_in_window net/netfilter/nf_conntrack_proto_tcp.c:676 [inline]
RIP: 0010:nf_conntrack_tcp_packet+0x4a6a/0x6800 net/netfilter/nf_conntrack_proto_tcp.c:1250
Code: f9 8b 9c 24 c0 00 00 00 31 ff 89 de e8 7f 2a 13 f9 85 db 0f 84 68 04 00 00 e8 02 2f 13 f9 41 89 ae fc 00 00 00 e9 18 e3 ff ff f1 2e 13 f9 48 8b 44 24 10 44 89 a3 f8 00 00 00 48 8b 74 24 20
RSP: 0018:ffffc90000007298 EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffff888024504194 RCX: ffffffff88748baf
RDX: ffff888024f99dc0 RSI: 0000000000000100 RDI: 0000000000000005
RBP: 00000000fffff970 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffff970 R11: ffffc90000007ae8 R12: 00000000d54ad157
R13: 00000000fffb28ff R14: ffff888024504180 R15: ffff888021acb62e
nf_conntrack_handle_packet net/netfilter/nf_conntrack_core.c:1923 [inline]
nf_conntrack_in+0x2e9/0x1850 net/netfilter/nf_conntrack_core.c:2013
nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
nf_hook_slow+0xbf/0x1e0 net/netfilter/core.c:626
nf_hook_slow_list+0x1a7/0x3f0 net/netfilter/core.c:665
NF_HOOK_LIST.constprop.0+0x19a/0x380 include/linux/netfilter.h:340
ip_sublist_rcv net/ipv4/ip_input.c:637 [inline]
ip_list_rcv+0x326/0x440 net/ipv4/ip_input.c:674
__netif_receive_skb_list_ptype net/core/dev.c:5595 [inline]
__netif_receive_skb_list_core+0x52c/0x8a0 net/core/dev.c:5643
__netif_receive_skb_list net/core/dev.c:5695 [inline]
netif_receive_skb_list_internal+0x769/0xe00 net/core/dev.c:5786
gro_normal_list include/net/gro.h:439 [inline]
gro_normal_list include/net/gro.h:435 [inline]
napi_complete_done+0x23f/0x990 net/core/dev.c:6126
virtqueue_napi_complete drivers/net/virtio_net.c:440 [inline]
virtnet_poll+0xf4a/0x1630 drivers/net/virtio_net.c:2155
__napi_poll.constprop.0+0xb4/0x530 net/core/dev.c:6556
napi_poll net/core/dev.c:6623 [inline]
net_rx_action+0x956/0xe90 net/core/dev.c:6756
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:unwind_next_frame+0xca/0x2390 arch/x86/kernel/unwind_orc.c:482
Code: b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 16 1d 00 00 48 8b 43 38 bf 01 00 00 00 48 89 44 24 18 e8 d6 5c 20 00 <48> 8d 43 50 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900031df460 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc900031df4e0 RCX: 1ffffffff24566bc
RDX: 1ffff110049f364e RSI: ffffffff813a5697 RDI: ffff888024f9b270
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 1ffff11002de8bb2 R12: ffffc900031df4e0
R13: ffffffff81758040 R14: ffffc900031df5a0 R15: ffff888024f99dc0
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
slab_free mm/slub.c:3809 [inline]
kmem_cache_free+0xf0/0x480 mm/slub.c:3831
anon_vma_chain_free mm/rmap.c:147 [inline]
unlink_anon_vmas+0x173/0x800 mm/rmap.c:422
free_pgtables+0xaa/0x800 mm/memory.c:383
exit_mmap+0x383/0xa60 mm/mmap.c:3221
__mmput+0x12a/0x4d0 kernel/fork.c:1349
mmput+0x62/0x70 kernel/fork.c:1371
exit_mm kernel/exit.c:567 [inline]
do_exit+0x9ad/0x2a20 kernel/exit.c:861
do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
get_signal+0x23ba/0x2790 kernel/signal.c:2892
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f963847cae9
Code: Unable to access opcode bytes at 0x7f963847cabf.
RSP: 002b:00007f963914d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffea RBX: 00007f963859bf80 RCX: 00007f963847cae9
RDX: 0000000000000020 RSI: 00000000200000c0 RDI: 0000000000000012
RBP: 00007f96384c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f963859bf80 R15: 00007fffe35aa028
Allocated by task 4492:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x180/0x3f0 mm/slub.c:3523
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct kernel/fork.c:1110 [inline]
copy_process+0x41c/0x73f0 kernel/fork.c:2327
kernel_clone+0xfd/0x920 kernel/fork.c:2909
__do_sys_clone+0xba/0x100 kernel/fork.c:3052
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 12843:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1800 [inline]
slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
slab_free mm/slub.c:3809 [inline]
kmem_cache_free+0xf0/0x480 mm/slub.c:3831
put_task_struct include/linux/sched/task.h:136 [inline]
put_task_struct include/linux/sched/task.h:123 [inline]
delayed_put_task_struct+0x21b/0x2b0 kernel/exit.c:226
rcu_do_batch kernel/rcu/tree.c:2139 [inline]
rcu_core+0x805/0x1bb0 kernel/rcu/tree.c:2403
__do_softirq+0x218/0x965 kernel/softirq.c:553
Last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
put_task_struct_rcu_user kernel/exit.c:232 [inline]
put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:229
release_task+0xef7/0x1b70 kernel/exit.c:282
wait_task_zombie kernel/exit.c:1210 [inline]
wait_consider_task+0x17b5/0x4000 kernel/exit.c:1437
do_wait_thread kernel/exit.c:1500 [inline]
do_wait+0x72a/0xc70 kernel/exit.c:1617
kernel_wait4+0x16d/0x280 kernel/exit.c:1780
__do_sys_wait4+0x15b/0x170 kernel/exit.c:1808
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Second to last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
__call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2653
put_task_struct_rcu_user kernel/exit.c:232 [inline]
put_task_struct_rcu_user+0x87/0xc0 kernel/exit.c:229
release_task+0xef7/0x1b70 kernel/exit.c:282
wait_task_zombie kernel/exit.c:1210 [inline]
wait_consider_task+0x17b5/0x4000 kernel/exit.c:1437
do_wait_thread kernel/exit.c:1500 [inline]
do_wait+0x72a/0xc70 kernel/exit.c:1617
kernel_wait4+0x16d/0x280 kernel/exit.c:1780
__do_sys_wait4+0x15b/0x170 kernel/exit.c:1808
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff888024b13b80
which belongs to the cache task_struct of size 7360
The buggy address is located 168 bytes inside of
freed 7360-byte region [ffff888024b13b80, ffff888024b15840)
The buggy address belongs to the physical page:
page:ffffea000092c400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x24b10
head:ffffea000092c400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888028992f81
ksm flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888014e43500 ffffea000092fc00 dead000000000003
raw: 0000000000000000 0000000000040004 00000001ffffffff ffff888028992f81
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 12, tgid 12 (kworker/u4:1), ts 28071251098, free_ts 0
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
alloc_pages+0x1a9/0x270 mm/mempolicy.c:2297
alloc_slab_page mm/slub.c:1870 [inline]
allocate_slab+0x251/0x380 mm/slub.c:2017
new_slab mm/slub.c:2070 [inline]
___slab_alloc+0x8c7/0x1580 mm/slub.c:3223
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
__slab_alloc_node mm/slub.c:3375 [inline]
slab_alloc_node mm/slub.c:3468 [inline]
kmem_cache_alloc_node+0x132/0x3f0 mm/slub.c:3523
alloc_task_struct_node kernel/fork.c:173 [inline]
dup_task_struct kernel/fork.c:1110 [inline]
copy_process+0x41c/0x73f0 kernel/fork.c:2327
kernel_clone+0xfd/0x920 kernel/fork.c:2909
user_mode_thread+0xb4/0xf0 kernel/fork.c:2987
call_usermodehelper_exec_work kernel/umh.c:172 [inline]
call_usermodehelper_exec_work+0xcb/0x170 kernel/umh.c:158
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
page_owner free stack trace missing
Memory state around the buggy address:
ffff888024b13b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888024b13b80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888024b13c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888024b13c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888024b13d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: f9 stc
1: 8b 9c 24 c0 00 00 00 mov 0xc0(%rsp),%ebx
8: 31 ff xor %edi,%edi
a: 89 de mov %ebx,%esi
c: e8 7f 2a 13 f9 call 0xf9132a90
11: 85 db test %ebx,%ebx
13: 0f 84 68 04 00 00 je 0x481
19: e8 02 2f 13 f9 call 0xf9132f20
1e: 41 89 ae fc 00 00 00 mov %ebp,0xfc(%r14)
25: e9 18 e3 ff ff jmp 0xffffe342
* 2a: e8 f1 2e 13 f9 call 0xf9132f20 <-- trapping instruction
2f: 48 8b 44 24 10 mov 0x10(%rsp),%rax
34: 44 89 a3 f8 00 00 00 mov %r12d,0xf8(%rbx)
3b: 48 8b 74 24 20 mov 0x20(%rsp),%rsi