==================================================================
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 ffff8881cf16f1c8 by task syz-executor.4/3797
CPU: 1 PID: 3797 Comm: syz-executor.4 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:memset+0x2c/0x40 mm/kasan/common.c:108
Code: 56 53 48 89 d3 41 89 f6 48 89 fd 48 8b 4c 24 18 48 89 d6 ba 01 00 00 00 e8 61 22 00 00 48 89 ef 44 89 f6 48 89 da 5b 41 5e 5d df 8b bb 02 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57
RSP: 0018:ffff8881ea10ed98 EFLAGS: 00000256 ORIG_RAX: ffffffffffffff13
RAX: ffff8881ea10f001 RBX: ffff8881ea10f0d8 RCX: ffffffff812fce86
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8881ea10f0f0
RBP: ffff8881ea10f090 R08: dffffc0000000000 R09: ffffed103d421e20
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff0d07355
R13: ffffffff86839aa8 R14: ffff8881ea10f0a0 R15: dffffc0000000000
unwind_next_frame+0x1036/0x1ea0 arch/x86/kernel/unwind_orc.c:534
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc_node mm/slub.c:2829 [inline]
slab_alloc mm/slub.c:2837 [inline]
__kmalloc+0x105/0x2e0 mm/slub.c:3909
__kmalloc_node include/linux/slab.h:422 [inline]
kmalloc_node include/linux/slab.h:599 [inline]
kvmalloc_node+0x7e/0xf0 mm/util.c:596
kvmalloc include/linux/mm.h:761 [inline]
kvmalloc_array include/linux/mm.h:779 [inline]
__ptr_ring_init_queue_alloc include/linux/ptr_ring.h:470 [inline]
ptr_ring_init include/linux/ptr_ring.h:488 [inline]
skb_array_init include/linux/skb_array.h:182 [inline]
pfifo_fast_init+0x109/0x760 net/sched/sch_generic.c:784
qdisc_create_dflt+0x129/0x250 net/sched/sch_generic.c:944
mq_init+0x2c8/0x6b0 net/sched/sch_mq.c:90
qdisc_create_dflt+0x129/0x250 net/sched/sch_generic.c:944
attach_default_qdiscs net/sched/sch_generic.c:1113 [inline]
dev_activate+0x11f/0xc00 net/sched/sch_generic.c:1154
__dev_open+0x302/0x420 net/core/dev.c:1335
__dev_change_flags+0x1db/0x6e0 net/core/dev.c:7939
dev_change_flags+0x87/0x190 net/core/dev.c:8010
dev_ifsioc+0x104/0xa60 net/core/dev_ioctl.c:226
dev_ioctl+0x505/0xb40 net/core/dev_ioctl.c:483
sock_do_ioctl+0x295/0x3a0 net/socket.c:1081
sock_ioctl+0x4a4/0x760 net/socket.c:1198
do_vfs_ioctl+0x742/0x1720 fs/ioctl.c:47
ksys_ioctl fs/ioctl.c:742 [inline]
__do_sys_ioctl fs/ioctl.c:749 [inline]
__se_sys_ioctl fs/ioctl.c:747 [inline]
__x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fcd354760a9
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:00007fcd347f00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcd355acf80 RCX: 00007fcd354760a9
RDX: 0000000020002280 RSI: 0000000000008914 RDI: 0000000000000007
RBP: 00007fcd354e5074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcd355acf80 R15: 00007fff2a4fe878
The buggy address belongs to the page:
page:ffffea00073c5bc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x8000000000000000()
raw: 8000000000000000 ffffea00073fa908 ffffea00073c5b88 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:382
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:
ffff8881cf16f080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881cf16f100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881cf16f180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881cf16f200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881cf16f280: 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 1e10b6067 P4D 1e10b6067 PUD 1d8924067 PMD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3797 Comm: syz-executor.4 Tainted: G B 5.4.274-syzkaller-00002-g6f97bd951d82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010202
RAX: ffffffff8154d7aa RBX: 0000000000000101 RCX: ffff8881e349bf00
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881cf16f1c0
RBP: ffff8881f6f09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffa9b0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881cf16f1c0
FS: 00007fcd347f06c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d6405000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:memset+0x2c/0x40 mm/kasan/common.c:108
Code: 56 53 48 89 d3 41 89 f6 48 89 fd 48 8b 4c 24 18 48 89 d6 ba 01 00 00 00 e8 61 22 00 00 48 89 ef 44 89 f6 48 89 da 5b 41 5e 5d df 8b bb 02 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57
RSP: 0018:ffff8881ea10ed98 EFLAGS: 00000256 ORIG_RAX: ffffffffffffff13
RAX: ffff8881ea10f001 RBX: ffff8881ea10f0d8 RCX: ffffffff812fce86
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff8881ea10f0f0
RBP: ffff8881ea10f090 R08: dffffc0000000000 R09: ffffed103d421e20
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff0d07355
R13: ffffffff86839aa8 R14: ffff8881ea10f0a0 R15: dffffc0000000000
unwind_next_frame+0x1036/0x1ea0 arch/x86/kernel/unwind_orc.c:534
arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc_node mm/slub.c:2829 [inline]
slab_alloc mm/slub.c:2837 [inline]
__kmalloc+0x105/0x2e0 mm/slub.c:3909
__kmalloc_node include/linux/slab.h:422 [inline]
kmalloc_node include/linux/slab.h:599 [inline]
kvmalloc_node+0x7e/0xf0 mm/util.c:596
kvmalloc include/linux/mm.h:761 [inline]
kvmalloc_array include/linux/mm.h:779 [inline]
__ptr_ring_init_queue_alloc include/linux/ptr_ring.h:470 [inline]
ptr_ring_init include/linux/ptr_ring.h:488 [inline]
skb_array_init include/linux/skb_array.h:182 [inline]
pfifo_fast_init+0x109/0x760 net/sched/sch_generic.c:784
qdisc_create_dflt+0x129/0x250 net/sched/sch_generic.c:944
mq_init+0x2c8/0x6b0 net/sched/sch_mq.c:90
qdisc_create_dflt+0x129/0x250 net/sched/sch_generic.c:944
attach_default_qdiscs net/sched/sch_generic.c:1113 [inline]
dev_activate+0x11f/0xc00 net/sched/sch_generic.c:1154
__dev_open+0x302/0x420 net/core/dev.c:1335
__dev_change_flags+0x1db/0x6e0 net/core/dev.c:7939
dev_change_flags+0x87/0x190 net/core/dev.c:8010
dev_ifsioc+0x104/0xa60 net/core/dev_ioctl.c:226
dev_ioctl+0x505/0xb40 net/core/dev_ioctl.c:483
sock_do_ioctl+0x295/0x3a0 net/socket.c:1081
sock_ioctl+0x4a4/0x760 net/socket.c:1198
do_vfs_ioctl+0x742/0x1720 fs/ioctl.c:47
ksys_ioctl fs/ioctl.c:742 [inline]
__do_sys_ioctl fs/ioctl.c:749 [inline]
__se_sys_ioctl fs/ioctl.c:747 [inline]
__x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fcd354760a9
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:00007fcd347f00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcd355acf80 RCX: 00007fcd354760a9
RDX: 0000000020002280 RSI: 0000000000008914 RDI: 0000000000000007
RBP: 00007fcd354e5074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcd355acf80 R15: 00007fff2a4fe878
Modules linked in:
CR2: 0000000000000000
---[ end trace 4febe3b0a7bba53a ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010202
RAX: ffffffff8154d7aa RBX: 0000000000000101 RCX: ffff8881e349bf00
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881cf16f1c0
RBP: ffff8881f6f09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffa9b0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881cf16f1c0
FS: 00007fcd347f06c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d6405000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 56 push %rsi
1: 53 push %rbx
2: 48 89 d3 mov %rdx,%rbx
5: 41 89 f6 mov %esi,%r14d
8: 48 89 fd mov %rdi,%rbp
b: 48 8b 4c 24 18 mov 0x18(%rsp),%rcx
10: 48 89 d6 mov %rdx,%rsi
13: ba 01 00 00 00 mov $0x1,%edx
18: e8 61 22 00 00 call 0x227e
1d: 48 89 ef mov %rbp,%rdi
20: 44 89 f6 mov %r14d,%esi
23: 48 89 da mov %rbx,%rdx
26: 5b pop %rbx
27: 41 5e pop %r14
29: 5d pop %rbp
* 2a: e9 df 8b bb 02 jmp 0x2bb8c0e <-- trapping instruction
2f: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1)
36: 00 00 00 00
3a: 0f 1f 40 00 nopl 0x0(%rax)
3e: 41 57 push %r15