==================================================================
BUG: KASAN: stack-out-of-bounds in bpf_net_ctx_get_all_used_flush_lists include/linux/filter.h:837 [inline]
BUG: KASAN: stack-out-of-bounds in xdp_do_check_flushed+0x231/0x240 net/core/filter.c:4298
Read of size 4 at addr ffffc9000445f7f8 by task syz.4.832/9295
CPU: 1 UID: 0 PID: 9295 Comm: syz.4.832 Not tainted 6.10.0-next-20240724-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
kasan_report+0x143/0x180 mm/kasan/report.c:601
bpf_net_ctx_get_all_used_flush_lists include/linux/filter.h:837 [inline]
xdp_do_check_flushed+0x231/0x240 net/core/filter.c:4298
__napi_poll+0xe4/0x490 net/core/dev.c:6774
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:6962
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5113
Code: c9 50 e8 39 b8 0b 00 48 83 c4 08 4c 89 f7 e8 dd 38 00 00 cc de 04 00 00 4c 89 f7 e8 60 80 3a 0a e8 fb 85 37 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc9000445f668 EFLAGS: 00000286
RAX: d263a0c279a24200 RBX: ffff888028f43c00 RCX: ffffffff94803903
RDX: dffffc0000000000 RSI: ffffffff8bcad540 RDI: ffffffff8c2078c0
RBP: ffffc9000445f6b0 R08: ffffffff8faf9baf R09: 1ffffffff1f5f375
R10: dffffc0000000000 R11: fffffbfff1f5f376 R12: 1ffff110172a7ef3
R13: dffffc0000000000 R14: ffff8880b943ea00 R15: ffff8880b953f798
context_switch kernel/sched/core.c:5242 [inline]
__schedule+0x1808/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_interruptible+0x3a8/0x6a0 kernel/sched/completion.c:216
raw_process_ep0_io+0x3cb/0x8f0 drivers/usb/gadget/legacy/raw_gadget.c:735
raw_ioctl_ep0_write drivers/usb/gadget/legacy/raw_gadget.c:766 [inline]
raw_ioctl+0x223f/0x3cd0 drivers/usb/gadget/legacy/raw_gadget.c:1312
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f958db75b1b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f958e8e0f20 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f958db75b1b
RDX: 00007f958e8e0fe0 RSI: 0000000040085503 RDI: 0000000000000008
RBP: 00007f958e8e1ff0 R08: 0000000000000080 R09: 00007f958e8e0fe8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000080085502
R13: 0000000800000000 R14: 0000000000000012 R15: 00007f958dbecafa
The buggy address belongs to stack of task syz.4.832/9295
and is located at offset 88 in frame:
__schedule+0x0/0x4a60
This frame has 4 objects:
[32, 56) 'ac.i'
[96, 100) 'cid.i.i.i'
[112, 120) 'flags.i.i.i'
[144, 160) 'rf'
The buggy address belongs to the virtual mapping at
[ffffc90004458000, ffffc90004461000) created by:
copy_process+0x5d1/0x3d90 kernel/fork.c:2206
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x3f pfn:0x5fbff
memcg:ffff88802dbe1202
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 000000000000003f 0000000000000000 00000001ffffffff ffff88802dbe1202
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 9279, tgid 9279 (syz.4.828), ts 466420482703, free_ts 465614445012
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3438
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4696
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263
vm_area_alloc_pages mm/vmalloc.c:3584 [inline]
__vmalloc_area_node mm/vmalloc.c:3660 [inline]
__vmalloc_node_range_noprof+0x971/0x1460 mm/vmalloc.c:3841
alloc_thread_stack_node kernel/fork.c:314 [inline]
dup_task_struct+0x444/0x8c0 kernel/fork.c:1115
copy_process+0x5d1/0x3d90 kernel/fork.c:2206
kernel_clone+0x226/0x8f0 kernel/fork.c:2788
__do_sys_clone3 kernel/fork.c:3092 [inline]
__se_sys_clone3+0x2cb/0x350 kernel/fork.c:3071
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 8601 tgid 8601 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_folios+0x103a/0x1b00 mm/page_alloc.c:2656
folios_put_refs+0x76e/0x860 mm/swap.c:1039
folio_batch_release include/linux/pagevec.h:101 [inline]
truncate_inode_pages_range+0x47b/0xfc0 mm/truncate.c:346
kill_bdev block/bdev.c:90 [inline]
blkdev_flush_mapping+0x108/0x250 block/bdev.c:664
blkdev_put_whole block/bdev.c:671 [inline]
bdev_release+0x466/0x700 block/bdev.c:1096
blkdev_release+0x15/0x20 block/fops.c:638
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:222
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffffc9000445f680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc9000445f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000445f780: 00 00 00 00 f1 f1 f1 f1 00 00 00 f2 f2 f2 f2 f2
^
ffffc9000445f800: 04 f2 00 f2 f2 f2 00 00 f3 f3 f3 f3 00 00 00 00
ffffc9000445f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: c9 leave
1: 50 push %rax
2: e8 39 b8 0b 00 call 0xbb840
7: 48 83 c4 08 add $0x8,%rsp
b: 4c 89 f7 mov %r14,%rdi
e: e8 dd 38 00 00 call 0x38f0
13: cc int3
14: de 04 00 fiadds (%rax,%rax,1)
17: 00 4c 89 f7 add %cl,-0x9(%rcx,%rcx,4)
1b: e8 60 80 3a 0a call 0xa3a8080
20: e8 fb 85 37 00 call 0x378620
25: fb sti
26: 48 8b 5d c0 mov -0x40(%rbp),%rbx
* 2a: 48 8d bb f8 15 00 00 lea 0x15f8(%rbx),%rdi <-- trapping instruction
31: 48 89 f8 mov %rdi,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 49 rex.WB
39: be 00 00 00 00 mov $0x0,%esi
3e: 00 fc add %bh,%ah