==================================================================
BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:814 [inline]
BUG: KASAN: use-after-free in enqueue_timer+0xb7/0x300 kernel/time/timer.c:541
Write of size 8 at addr ffff8881ec3e71c8 by task syz-executor.0/1907
CPU: 0 PID: 1907 Comm: syz-executor.0 Tainted: G W 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_add_head include/linux/list.h:814 [inline]
enqueue_timer+0xb7/0x300 kernel/time/timer.c:541
__internal_add_timer kernel/time/timer.c:554 [inline]
internal_add_timer+0x240/0x430 kernel/time/timer.c:604
__mod_timer+0x6f1/0x13e0 kernel/time/timer.c:1065
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:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:4558
Code: 4c 89 e7 e8 90 e1 43 fd f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 04 a2 f4 fc fb bf 01 00 00 00 b9 e6 ff ff fa bf 01 00 00 00 e8 6e a3 f4 fc 65 48 8b 1d a6 4d
RSP: 0018:ffff8881ec336c00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103dcf6717 RBX: 1ffff1103d866d84 RCX: ffffffff84511c00
RDX: ffffc90001347000 RSI: 000000000003ffff RDI: 0000000000000001
RBP: ffff8881ec336c88 R08: ffffffff82316d59 R09: ffffed103edcb135
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881ec336c20
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1103d866d80
retint_kernel+0x1b/0x1b
RIP: 0010:qlist_free_all+0x3e/0xb0 mm/kasan/quarantine.c:167
Code: 85 00 00 00 49 89 f5 49 bf 00 00 00 00 00 ea ff ff 49 bc 00 00 00 80 7f 77 00 00 eb 1a 48 ff c9 48 89 c8 48 8b 70 18 48 8b 1f 0d 05 00 00 48 89 df 48 85 db 74 3b 4c 89 ee 4d 85 ed 75 e8 4c
RSP: 0018:ffff8881ec336d48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffffea0007b97b00 RBX: ffff8881d399a200 RCX: ffffea0007bae540
RDX: 000000008040003e RSI: ffff8881f5c03400 RDI: ffff8881ee5ec040
RBP: 00000000000001d9 R08: ffff8881ee5ec380 R09: ffffffff81942c10
R10: ffff8881ee5ec380 R11: 000000000005fc50 R12: 0000777f80000000
R13: 0000000000000000 R14: ffff8881ec336d78 R15: ffffea0000000000
quarantine_reduce+0x1d9/0x210 mm/kasan/quarantine.c:260
__kasan_kmalloc+0x41/0x210 mm/kasan/common.c:507
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_track_caller+0x100/0x2b0 mm/slub.c:4449
__do_krealloc mm/slab_common.c:1690 [inline]
krealloc+0x91/0xe0 mm/slab_common.c:1741
push_jmp_history kernel/bpf/verifier.c:1415 [inline]
is_state_visited kernel/bpf/verifier.c:7681 [inline]
do_check+0x29a6/0x9820 kernel/bpf/verifier.c:7837
bpf_check+0x2169/0xb340 kernel/bpf/verifier.c:9637
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fd48cb3c0a9
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:00007fd48beb60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd48cc72f80 RCX: 00007fd48cb3c0a9
RDX: 0000000000000090 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007fd48cbab074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd48cc72f80 R15: 00007ffc0a9d2798
The buggy address belongs to the page:
page:ffffea0007b0f9c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x8000000000000000()
raw: 8000000000000000 0000000000000000 dead000000000122 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 2, migratetype Unmovable, gfp_mask 0x152dc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO)
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]
kmalloc_order mm/slab_common.c:1342 [inline]
kmalloc_order_trace+0x2a/0x100 mm/slab_common.c:1358
__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+0x240/0x760 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
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_pages_ok+0x847/0x950 mm/page_alloc.c:1438
free_the_page mm/page_alloc.c:4955 [inline]
__free_pages+0x91/0x140 mm/page_alloc.c:4961
ptr_ring_cleanup include/linux/ptr_ring.h:670 [inline]
pfifo_fast_destroy+0x82/0xd0 net/sched/sch_generic.c:810
qdisc_destroy+0xd2/0x490 net/sched/sch_generic.c:1008
qdisc_put net/sched/sch_generic.c:1035 [inline]
shutdown_scheduler_queue net/sched/sch_generic.c:1372 [inline]
netdev_for_each_tx_queue include/linux/netdevice.h:2194 [inline]
dev_shutdown+0x18a/0x540 net/sched/sch_generic.c:1378
rollback_registered_many+0x87d/0x1330 net/core/dev.c:8624
rollback_registered net/core/dev.c:8673 [inline]
unregister_netdevice_queue+0x333/0x500 net/core/dev.c:9767
unregister_netdevice include/linux/netdevice.h:2726 [inline]
__tun_detach+0x8de/0x1390 drivers/net/tun.c:747
tun_detach drivers/net/tun.c:763 [inline]
tun_chr_close+0x8f/0x130 drivers/net/tun.c:3558
__fput+0x262/0x680 fs/file_table.c:281
task_work_run+0x140/0x170 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x190/0x1a0 arch/x86/entry/common.c:163
prepare_exit_to_usermode+0x199/0x200 arch/x86/entry/common.c:194
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Memory state around the buggy address:
ffff8881ec3e7080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881ec3e7100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881ec3e7180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881ec3e7200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881ec3e7280: 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 1ed65a067 P4D 1ed65a067 PUD 1d3fb7067 PMD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1907 Comm: syz-executor.0 Tainted: G B W 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:ffff8881f6e09d18 EFLAGS: 00010202
RAX: ffffffff8154d7aa RBX: 0000000000000101 RCX: ffff8881ee7b2f40
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881ec3e71c0
RBP: ffff8881f6e09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffa0b8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881ec3e71c0
FS: 00007fd48beb66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001ed681000 CR4: 00000000003406b0
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: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:preempt_schedule_irq+0xc2/0x140 kernel/sched/core.c:4558
Code: 4c 89 e7 e8 90 e1 43 fd f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 04 a2 f4 fc fb bf 01 00 00 00 b9 e6 ff ff fa bf 01 00 00 00 e8 6e a3 f4 fc 65 48 8b 1d a6 4d
RSP: 0018:ffff8881ec336c00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103dcf6717 RBX: 1ffff1103d866d84 RCX: ffffffff84511c00
RDX: ffffc90001347000 RSI: 000000000003ffff RDI: 0000000000000001
RBP: ffff8881ec336c88 R08: ffffffff82316d59 R09: ffffed103edcb135
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881ec336c20
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff1103d866d80
retint_kernel+0x1b/0x1b
RIP: 0010:qlist_free_all+0x3e/0xb0 mm/kasan/quarantine.c:167
Code: 85 00 00 00 49 89 f5 49 bf 00 00 00 00 00 ea ff ff 49 bc 00 00 00 80 7f 77 00 00 eb 1a 48 ff c9 48 89 c8 48 8b 70 18 48 8b 1f 0d 05 00 00 48 89 df 48 85 db 74 3b 4c 89 ee 4d 85 ed 75 e8 4c
RSP: 0018:ffff8881ec336d48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffffea0007b97b00 RBX: ffff8881d399a200 RCX: ffffea0007bae540
RDX: 000000008040003e RSI: ffff8881f5c03400 RDI: ffff8881ee5ec040
RBP: 00000000000001d9 R08: ffff8881ee5ec380 R09: ffffffff81942c10
R10: ffff8881ee5ec380 R11: 000000000005fc50 R12: 0000777f80000000
R13: 0000000000000000 R14: ffff8881ec336d78 R15: ffffea0000000000
quarantine_reduce+0x1d9/0x210 mm/kasan/quarantine.c:260
__kasan_kmalloc+0x41/0x210 mm/kasan/common.c:507
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_track_caller+0x100/0x2b0 mm/slub.c:4449
__do_krealloc mm/slab_common.c:1690 [inline]
krealloc+0x91/0xe0 mm/slab_common.c:1741
push_jmp_history kernel/bpf/verifier.c:1415 [inline]
is_state_visited kernel/bpf/verifier.c:7681 [inline]
do_check+0x29a6/0x9820 kernel/bpf/verifier.c:7837
bpf_check+0x2169/0xb340 kernel/bpf/verifier.c:9637
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fd48cb3c0a9
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:00007fd48beb60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd48cc72f80 RCX: 00007fd48cb3c0a9
RDX: 0000000000000090 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007fd48cbab074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd48cc72f80 R15: 00007ffc0a9d2798
Modules linked in:
CR2: 0000000000000000
---[ end trace ee409209b56bb7b4 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09d18 EFLAGS: 00010202
RAX: ffffffff8154d7aa RBX: 0000000000000101 RCX: ffff8881ee7b2f40
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881ec3e71c0
RBP: ffff8881f6e09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffffa0b8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881ec3e71c0
FS: 00007fd48beb66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001ed681000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 4c 89 e7 mov %r12,%rdi
3: e8 90 e1 43 fd call 0xfd43e198
8: f6 44 24 21 02 testb $0x2,0x21(%rsp)
d: 74 0b je 0x1a
f: 0f 0b ud2
11: 48 f7 03 08 00 00 00 testq $0x8,(%rbx)
18: 74 4d je 0x67
1a: bf 01 00 00 00 mov $0x1,%edi
1f: e8 04 a2 f4 fc call 0xfcf4a228
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 b9 e6 ff ff call 0xffffe6e8 <-- trapping instruction
2f: fa cli
30: bf 01 00 00 00 mov $0x1,%edi
35: e8 6e a3 f4 fc call 0xfcf4a3a8
3a: 65 gs
3b: 48 rex.W
3c: 8b .byte 0x8b
3d: 1d .byte 0x1d
3e: a6 cmpsb %es:(%rdi),%ds:(%rsi)
3f: 4d rex.WRB