==================================================================
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 ffff88802f4580a8 by task syz-executor.5/5362
CPU: 1 PID: 5362 Comm: syz-executor.5 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:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: 76 ba 9d 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1e fa 65 8b 05 cd e2 7b 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc900001f0628 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff81320d09
RDX: ffff888077da3b80 RSI: 0000000000000100 RDI: 0000000000000005
RBP: ffffc900001f06c8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 5050505001000011 R12: ffffc900001f0638
R13: ffffffff81758040 R14: ffffc900001f06f8 R15: ffff888077da3b80
arch_stack_walk+0xb6/0x170 arch/x86/kernel/stacktrace.c:26
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
kmalloc_reserve+0x166/0x260 net/core/skbuff.c:559
__alloc_skb+0x12b/0x330 net/core/skbuff.c:650
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:put_cpu_partial+0x12e/0x220 mm/slub.c:2730
Code: 28 75 71 48 c7 43 28 00 00 00 00 48 89 df 48 8d 35 00 00 00 00 e8 d2 7c 8b ff 4d 85 e4 75 46 9c 58 f6 c4 02 0f 85 b0 00 00 00 <4d> 85 ed 74 21 5b 4c 89 ee 48 89 ef 5d 41 5c 41 5d 41 5e 41 5f e9
RSP: 0018:ffffc90005117940 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff8880b9940900 RCX: 1ffffffff233b0f8
RDX: 0000000000000000 RSI: ffffffff8a8caca0 RDI: ffffffff8ae93420
RBP: ffff888012c42140 R08: 0000000000000001 R09: fffffbfff23389d5
R10: ffffffff919c4eaf R11: 1ffff11005e8b7fa R12: 0000000000000200
R13: ffffea0000bea800 R14: 0000000000000001 R15: 0000000000000001
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
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]
slab_alloc mm/slub.c:3486 [inline]
__kmem_cache_alloc_lru mm/slub.c:3493 [inline]
kmem_cache_alloc+0x16c/0x3b0 mm/slub.c:3502
kmem_cache_zalloc include/linux/slab.h:710 [inline]
lsm_file_alloc security/security.c:612 [inline]
security_file_alloc+0x41/0x250 security/security.c:2603
init_file+0xb9/0x2d0 fs/file_table.c:161
alloc_empty_file+0x91/0x1d0 fs/file_table.c:210
path_openat+0xdc/0x29c0 fs/namei.c:3783
do_filp_open+0x1de/0x430 fs/namei.c:3824
do_sys_openat2+0x176/0x1e0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_openat fs/open.c:1453 [inline]
__se_sys_openat fs/open.c:1448 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1448
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
RIP: 0033:0x7fb39207cae9
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:00007fb392d150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb39219c120 RCX: 00007fb39207cae9
RDX: 00000000000026e1 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007fb3920c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb39219c120 R15: 00007fff5a9fe8c8
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 5325:
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
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 ffff88802f458000
which belongs to the cache task_struct of size 7360
The buggy address is located 168 bytes inside of
freed 7360-byte region [ffff88802f458000, ffff88802f459cc0)
The buggy address belongs to the physical page:
page:ffffea0000bd1600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2f458
head:ffffea0000bd1600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88805e929701
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888014e43500 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080040004 00000001ffffffff ffff88805e929701
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4492, tgid 4492 (udevd), ts 276422254770, free_ts 276389225235
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
__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
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405
__unfreeze_partials+0x21d/0x240 mm/slub.c:2655
qlink_free mm/kasan/quarantine.c:166 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
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
perf_event_alloc+0x134/0x3ef0 kernel/events/core.c:11816
__do_sys_perf_event_open+0x46e/0x2b10 kernel/events/core.c:12434
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
Memory state around the buggy address:
ffff88802f457f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88802f458000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802f458080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802f458100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802f458180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess), 4 bytes skipped:
0: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
6: f3 0f 1e fa endbr64
a: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi
11: e8 b0 ff ff ff call 0xffffffc6
16: 31 c0 xor %eax,%eax
18: c3 ret
19: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
20: 00 00 00 00
24: 66 90 xchg %ax,%ax
* 26: f3 0f 1e fa endbr64 <-- trapping instruction
2a: 65 8b 05 cd e2 7b 7e mov %gs:0x7e7be2cd(%rip),%eax # 0x7e7be2fe
31: 89 c1 mov %eax,%ecx
33: 48 8b 34 24 mov (%rsp),%rsi
37: 81 .byte 0x81
38: e1 00 loope 0x3a
3a: 01 00 add %eax,(%rax)