==================================================================
BUG: KASAN: use-after-free in __hlist_del include/linux/list.h:791 [inline]
BUG: KASAN: use-after-free in detach_timer kernel/time/timer.c:824 [inline]
BUG: KASAN: use-after-free in expire_timers kernel/time/timer.c:1482 [inline]
BUG: KASAN: use-after-free in __run_timers+0x7be/0xbe0 kernel/time/timer.c:1817
Write of size 8 at addr ffff8881d38b31c8 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d8/0x241 lib/dump_stack.c:118
print_address_description+0x8c/0x600 mm/kasan/report.c:384
__kasan_report+0xf3/0x120 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
__hlist_del include/linux/list.h:791 [inline]
detach_timer kernel/time/timer.c:824 [inline]
expire_timers kernel/time/timer.c:1482 [inline]
__run_timers+0x7be/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:539 [inline]
smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 db b0 da fd bf 01 00 00 00 89 c6 e8 3f 95 d1 fc 0f 1f 44 00 00 0f 00 2d 73 a4 4d 00 fb f4 bc b0 da fd bf ff ff ff ff 89 c6 e9 20 95 d1 fc 41 57 41 56 53
RSP: 0018:ffff8881f5df7d78 EFLAGS: 000002d2 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffff8881f5dc6e40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8881f5df7e80 R08: ffffffff8231cd01 R09: ffffed103ebb8dc9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff864c4d28
R13: ffff8881f5dc6e40 R14: 1ffff1103ebb8dc8 R15: 0000000000000001
default_idle_call kernel/sched/idle.c:94 [inline]
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x248/0x660 kernel/sched/idle.c:264
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:356
start_secondary+0x3a5/0x460 arch/x86/kernel/smpboot.c:277
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
The buggy address belongs to the page:
page:ffffea00074e2cc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x8000000000000000()
raw: 8000000000000000 ffffea0007ac0408 ffffea00074e2c88 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102cc2(GFP_HIGHUSER|__GFP_NOWARN)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
__alloc_pages include/linux/gfp.h:503 [inline]
__alloc_pages_node include/linux/gfp.h:516 [inline]
alloc_pages_node include/linux/gfp.h:530 [inline]
pcpu_alloc_pages mm/percpu-vm.c:94 [inline]
pcpu_populate_chunk+0x1bb/0xd00 mm/percpu-vm.c:284
pcpu_alloc+0x79e/0x1050 mm/percpu.c:1714
prealloc_init+0x238/0x800 kernel/bpf/hashtab.c:154
htab_map_alloc+0x638/0x930 kernel/bpf/hashtab.c:385
find_and_alloc_map kernel/bpf/syscall.c:122 [inline]
map_create kernel/bpf/syscall.c:573 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2873 [inline]
__se_sys_bpf+0x3291/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1176 [inline]
free_pcp_prepare mm/page_alloc.c:1233 [inline]
free_unref_page_prepare+0x297/0x380 mm/page_alloc.c:3085
free_unref_page mm/page_alloc.c:3134 [inline]
free_the_page mm/page_alloc.c:4953 [inline]
__free_pages+0xaf/0x140 mm/page_alloc.c:4961
pcpu_free_pages mm/percpu-vm.c:64 [inline]
pcpu_depopulate_chunk mm/percpu-vm.c:328 [inline]
pcpu_balance_workfn+0x940/0x1450 mm/percpu.c:1865
process_one_work+0x765/0xd20 kernel/workqueue.c:2290
worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
kthread+0x2da/0x360 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Memory state around the buggy address:
ffff8881d38b3080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881d38b3100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881d38b3180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881d38b3200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881d38b3280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1e23bc067 P4D 1e23bc067 PUD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 5.4.290-syzkaller-00017-g6b07fcd94a6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010202
RAX: ffffffff8154e8ca RBX: 0000000000000101 RCX: ffff8881f5dc6e40
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881d38b31c0
RBP: ffff8881f6f09ec8 R08: ffffffff8154e50e R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffe960
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d38b31c0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001eb71b000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
expire_timers kernel/time/timer.c:1493 [inline]
__run_timers+0x879/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:539 [inline]
smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:default_idle+0x1f/0x30 arch/x86/kernel/process.c:573
Code: 90 90 90 90 90 90 90 90 90 90 90 e8 db b0 da fd bf 01 00 00 00 89 c6 e8 3f 95 d1 fc 0f 1f 44 00 00 0f 00 2d 73 a4 4d 00 fb f4 bc b0 da fd bf ff ff ff ff 89 c6 e9 20 95 d1 fc 41 57 41 56 53
RSP: 0018:ffff8881f5df7d78 EFLAGS: 000002d2 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffff8881f5dc6e40
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8881f5df7e80 R08: ffffffff8231cd01 R09: ffffed103ebb8dc9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff864c4d28
R13: ffff8881f5dc6e40 R14: 1ffff1103ebb8dc8 R15: 0000000000000001
default_idle_call kernel/sched/idle.c:94 [inline]
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x248/0x660 kernel/sched/idle.c:264
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:356
start_secondary+0x3a5/0x460 arch/x86/kernel/smpboot.c:277
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241
Modules linked in:
CR2: 0000000000000000
---[ end trace 6d11fd845b44b7ee ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010202
RAX: ffffffff8154e8ca RBX: 0000000000000101 RCX: ffff8881f5dc6e40
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881d38b31c0
RBP: ffff8881f6f09ec8 R08: ffffffff8154e50e R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffe960
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d38b31c0
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001eb71b000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: e8 db b0 da fd call 0xfddab0eb
10: bf 01 00 00 00 mov $0x1,%edi
15: 89 c6 mov %eax,%esi
17: e8 3f 95 d1 fc call 0xfcd1955b
1c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
21: 0f 00 2d 73 a4 4d 00 verw 0x4da473(%rip) # 0x4da49b
28: fb sti
29: f4 hlt
* 2a: e8 bc b0 da fd call 0xfddab0eb <-- trapping instruction
2f: bf ff ff ff ff mov $0xffffffff,%edi
34: 89 c6 mov %eax,%esi
36: e9 20 95 d1 fc jmp 0xfcd1955b
3b: 41 57 push %r15
3d: 41 56 push %r14
3f: 53 push %rbx