==================================================================
BUG: KASAN: slab-use-after-free in __update_min_deadline kernel/sched/fair.c:805 [inline]
BUG: KASAN: slab-use-after-free in min_deadline_update kernel/sched/fair.c:819 [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+0x8e3/0xa60 kernel/sched/fair.c:3660
Read of size 8 at addr ffff88801531bc30 by task syz-executor.1/5993
CPU: 0 PID: 5993 Comm: syz-executor.1 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
__update_min_deadline kernel/sched/fair.c:805 [inline]
min_deadline_update kernel/sched/fair.c:819 [inline]
min_deadline_cb_propagate kernel/sched/fair.c:825 [inline]
reweight_entity+0x8e3/0xa60 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:__sanitizer_cov_trace_switch+0x40/0x90 kernel/kcov.c:341
Code: 48 83 f8 20 74 63 77 44 48 83 f8 08 74 53 48 83 f8 10 75 2f 41 bd 03 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 <4c> 89 e2 4c 89 ef 48 83 c3 01 48 8b 4c 24 28 e8 1c fe ff ff 49 39
RSP: 0018:ffffc900000075c8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffffff813a5ce5
RDX: ffff88801c8f5940 RSI: 0000000000000006 RDI: 0000000000000001
RBP: ffffffff8a89d0e0 R08: 0000000000000001 R09: 0000000000000005
R10: 0000000000000005 R11: 5050505001000011 R12: 0000000000000005
R13: 0000000000000001 R14: 0000000000000008 R15: ffffc900000076ad
unwind_next_frame+0x6b5/0x2390 arch/x86/kernel/unwind_orc.c:515
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_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_skb+0x287/0x330 net/core/skbuff.c:640
skb_copy+0x12d/0x3c0 net/core/skbuff.c:1976
mac80211_hwsim_tx_frame_no_nl.isra.0+0xb94/0x1300 drivers/net/wireless/virtual/mac80211_hwsim.c:1835
mac80211_hwsim_tx_frame+0x1eb/0x2a0 drivers/net/wireless/virtual/mac80211_hwsim.c:2171
mac80211_hwsim_beacon_tx+0x41b/0x730 drivers/net/wireless/virtual/mac80211_hwsim.c:2264
__iterate_interfaces+0x2d2/0x580 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:802
mac80211_hwsim_beacon+0x101/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2290
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x203/0xc10 kernel/time/hrtimer.c:1752
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1769
__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:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5721
Code: c1 05 25 e3 99 7e 83 f8 01 0f 85 b0 02 00 00 9c 58 f6 c4 02 0f 85 9b 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90003ca7558 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000794ead RCX: 0000000000000001
RDX: 1ffff1100391ec80 RSI: ffffffff8a8cafa0 RDI: ffffffff8ae93420
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff23389d0
R10: ffffffff919c4e87 R11: 1ffffffff1976ca1 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8cbab2e0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
rcu_read_lock include/linux/rcupdate.h:749 [inline]
page_ext_get+0x3a/0x310 mm/page_ext.c:508
page_table_check_clear mm/page_table_check.c:72 [inline]
page_table_check_clear+0x1b1/0x9a0 mm/page_table_check.c:61
__page_table_check_pte_clear+0xef/0x100 mm/page_table_check.c:158
page_table_check_pte_clear include/linux/page_table_check.h:49 [inline]
ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1301 [inline]
zap_pte_range mm/memory.c:1431 [inline]
zap_pmd_range mm/memory.c:1573 [inline]
zap_pud_range mm/memory.c:1602 [inline]
zap_p4d_range mm/memory.c:1623 [inline]
unmap_page_range+0x18e0/0x2c10 mm/memory.c:1644
unmap_single_vma+0x194/0x2b0 mm/memory.c:1690
unmap_vmas+0x1e2/0x330 mm/memory.c:1731
exit_mmap+0x1ad/0xa60 mm/mmap.c:3210
__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: 0033:0x7fc04987cae9
Code: Unable to access opcode bytes at 0x7fc04987cabf.
RSP: 002b:00007fc04a4ec178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fc04999bf88 RCX: 00007fc04987cae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc04999bf88
RBP: 00007fc04999bf80 R08: 00007fc04a4ec6c0 R09: 00007fc04a4ec6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc04999bf8c
R13: 000000000000000b R14: 00007ffccb5d01e0 R15: 00007ffccb5d02c8
Allocated by task 5034:
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 22:
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_pid kernel/exit.c:1568 [inline]
do_wait+0x669/0xc70 kernel/exit.c:1610
kernel_wait4+0x16d/0x280 kernel/exit.c:1780
__do_sys_wait4+0xbb/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
task_work_add+0x88/0x2a0 kernel/task_work.c:48
scheduler_tick+0x228/0x650 kernel/sched/core.c:5662
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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
The buggy address belongs to the object at ffff88801531bb80
which belongs to the cache task_struct of size 7360
The buggy address is located 176 bytes inside of
freed 7360-byte region [ffff88801531bb80, ffff88801531d840)
The buggy address belongs to the physical page:
page:ffffea000054c600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15318
head:ffffea000054c600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888014e43500 ffffea0000939a00 dead000000000002
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
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 42, tgid 42 (kworker/u4:2), ts 11838753552, 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:
ffff88801531bb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88801531bb80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801531bc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801531bc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801531bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 48 83 f8 20 cmp $0x20,%rax
4: 74 63 je 0x69
6: 77 44 ja 0x4c
8: 48 83 f8 08 cmp $0x8,%rax
c: 74 53 je 0x61
e: 48 83 f8 10 cmp $0x10,%rax
12: 75 2f jne 0x43
14: 41 bd 03 00 00 00 mov $0x3,%r13d
1a: 4c 8b 75 00 mov 0x0(%rbp),%r14
1e: 31 db xor %ebx,%ebx
20: 4d 85 f6 test %r14,%r14
23: 74 1e je 0x43
25: 48 8b 74 dd 10 mov 0x10(%rbp,%rbx,8),%rsi
* 2a: 4c 89 e2 mov %r12,%rdx <-- trapping instruction
2d: 4c 89 ef mov %r13,%rdi
30: 48 83 c3 01 add $0x1,%rbx
34: 48 8b 4c 24 28 mov 0x28(%rsp),%rcx
39: e8 1c fe ff ff call 0xfffffe5a
3e: 49 rex.WB
3f: 39 .byte 0x39