==================================================================
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+0x41c/0x4e0 net/core/filter.c:4298
Read of size 4 at addr ffffc90003317a50 by task syz.2.3720/19915
CPU: 0 UID: 0 PID: 19915 Comm: syz.2.3720 Not tainted 6.10.0-syzkaller-12381-gc33ffdb70cc6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
bpf_net_ctx_get_all_used_flush_lists include/linux/filter.h:837 [inline]
xdp_do_check_flushed+0x41c/0x4e0 net/core/filter.c:4298
__napi_poll.constprop.0+0xd1/0x550 net/core/dev.c:6774
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0xa92/0x1010 net/core/dev.c:6962
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:preempt_schedule_irq+0x4c/0x90 kernel/sched/core.c:6851
Code: df 55 65 48 8b 2d 94 71 13 75 53 48 89 eb 48 c1 eb 03 48 01 c3 bf 01 00 00 00 e8 2f 34 6a f6 e8 8a 67 a1 f6 fb bf 01 00 00 00 4f a3 ff ff 9c 58 fa f6 c4 02 75 1e bf 01 00 00 00 e8 7d e4 69
RSP: 0000:ffffc90003316e28 EFLAGS: 00000202
RAX: 00000000000048fd RBX: ffffed100424e3c0 RCX: 1ffffffff285bc79
RDX: 0000000000000000 RSI: ffffffff8b2cc580 RDI: 0000000000000001
RBP: ffff888021271e00 R08: 0000000000000001 R09: fffffbfff28590de
R10: ffffffff942c86f7 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:__unwind_start+0x332/0x880 arch/x86/kernel/unwind_orc.c:768
Code: 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e b2 03 00 00 c7 03 00 00 00 00 48 83 c4 20 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 af 80 4d 00 e8 aa 80 4d 00 65 48
RSP: 0000:ffffc90003316ef8 EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffffc90003316f38 RCX: ffffffff813d0844
RDX: ffff888021271e00 RSI: ffffc90003316fd8 RDI: 0000000000000006
RBP: ffffc90003316fc8 R08: 0000000000000006 R09: ffffc90003316fd8
R10: ffffc90003316fc8 R11: 0000000000000000 R12: dffffc0000000000
R13: fffff52000662de9 R14: fffff52000662de8 R15: ffffc90003316fd8
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xb2/0x170 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_folios+0x9e9/0x1390 mm/page_alloc.c:2656
folios_put_refs+0x560/0x760 mm/swap.c:1039
free_pages_and_swap_cache+0x36d/0x510 mm/swap_state.c:332
__tlb_batch_free_encoded_pages+0xf9/0x290 mm/mmu_gather.c:136
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
tlb_flush_mmu+0xe9/0x590 mm/mmu_gather.c:373
zap_pte_range mm/memory.c:1697 [inline]
zap_pmd_range mm/memory.c:1736 [inline]
zap_pud_range mm/memory.c:1765 [inline]
zap_p4d_range mm/memory.c:1786 [inline]
unmap_page_range+0x1c88/0x3c10 mm/memory.c:1807
unmap_single_vma+0x194/0x2b0 mm/memory.c:1853
unmap_vmas+0x22f/0x490 mm/memory.c:1897
exit_mmap+0x1b8/0xb20 mm/mmap.c:3412
__mmput+0x12a/0x480 kernel/fork.c:1345
mmput+0x62/0x70 kernel/fork.c:1367
exit_mm kernel/exit.c:571 [inline]
do_exit+0x9bf/0x2bb0 kernel/exit.c:869
do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
get_signal+0x25fd/0x2770 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [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+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb3b6775f19
Code: Unable to access opcode bytes at 0x7fb3b6775eef.
RSP: 002b:00007fb3b74c30f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb3b6906118 RCX: 00007fb3b6775f19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb3b6906118
RBP: 00007fb3b6906110 R08: 00007fb3b74c36c0 R09: 00007fb3b74c36c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3b690611c
R13: 000000000000006e R14: 00007ffddda595b0 R15: 00007ffddda59698
The buggy address belongs to stack of task syz.2.3720/19915
and is located at offset 24 in frame:
exit_mmap+0x0/0xb20 mm/mmap.c:3232
This frame has 2 objects:
[32, 96) 'vmi'
[128, 256) 'tlb'
The buggy address belongs to the virtual mapping at
[ffffc90003310000, ffffc90003319000) created by:
kernel_clone+0xfd/0x980 kernel/fork.c:2781
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x20189 pfn:0x5b68a
memcg:ffff88801fdab902
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000020189 0000000000000000 00000001ffffffff ffff88801fdab902
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 19909, tgid 19909 (syz.2.3720), ts 1349766092543, free_ts 1342213785342
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x1351/0x2e50 mm/page_alloc.c:3438
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4696
alloc_pages_mpol_noprof+0x275/0x610 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+0xa6a/0x1520 mm/vmalloc.c:3841
alloc_thread_stack_node kernel/fork.c:313 [inline]
dup_task_struct kernel/fork.c:1113 [inline]
copy_process+0x2f3b/0x8de0 kernel/fork.c:2204
kernel_clone+0xfd/0x980 kernel/fork.c:2781
__do_sys_clone3+0x1f5/0x270 kernel/fork.c:3085
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 19615 tgid 19615 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2608
tlb_batch_list_free mm/mmu_gather.c:159 [inline]
tlb_finish_mmu+0x237/0x7b0 mm/mmu_gather.c:468
exit_mmap+0x3d1/0xb20 mm/mmap.c:3425
__mmput+0x12a/0x480 kernel/fork.c:1345
mmput+0x62/0x70 kernel/fork.c:1367
exit_mm kernel/exit.c:571 [inline]
do_exit+0x9bf/0x2bb0 kernel/exit.c:869
do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
__do_sys_exit_group kernel/exit.c:1042 [inline]
__se_sys_exit_group kernel/exit.c:1040 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1040
x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffffc90003317900: 00 f2 f2 f2 00 f2 f2 f2 00 00 f2 f2 00 00 00 00
ffffc90003317980: 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
>ffffc90003317a00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00
^
ffffc90003317a80: 00 00 00 f2 f2 f2 f2 00 00 00 00 00 00 00 00 00
ffffc90003317b00: 00 00 00 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: df 55 65 fists 0x65(%rbp)
3: 48 8b 2d 94 71 13 75 mov 0x75137194(%rip),%rbp # 0x7513719e
a: 53 push %rbx
b: 48 89 eb mov %rbp,%rbx
e: 48 c1 eb 03 shr $0x3,%rbx
12: 48 01 c3 add %rax,%rbx
15: bf 01 00 00 00 mov $0x1,%edi
1a: e8 2f 34 6a f6 call 0xf66a344e
1f: e8 8a 67 a1 f6 call 0xf6a167ae
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 4f a3 ff ff call 0xffffa37e <-- trapping instruction
2f: 9c pushf
30: 58 pop %rax
31: fa cli
32: f6 c4 02 test $0x2,%ah
35: 75 1e jne 0x55
37: bf 01 00 00 00 mov $0x1,%edi
3c: e8 .byte 0xe8
3d: 7d e4 jge 0x23
3f: 69 .byte 0x69