==================================================================
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:4305
Read of size 4 at addr ffffc900032e7a50 by task syz.1.449/6886
CPU: 1 UID: 0 PID: 6886 Comm: syz.1.449 Not tainted 6.10.0-syzkaller-12708-g2f8c4f506285 #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:4305
__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:debug_smp_processor_id+0x0/0x20 lib/smp_processor_id.c:59
Code: e8 35 92 59 f6 e8 20 72 e9 ff 90 65 ff 0d d0 7d f2 74 e9 40 ff ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 c7 c6 80 8b b0 8b 48 c7 c7 c0 8b b0 8b e9 f9 fe ff
RSP: 0018:ffffc900032e7590 EFLAGS: 00000283
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81f1d3a7
RDX: ffff88802fb38000 RSI: ffffffff81f1d3d3 RDI: 0000000000000005
RBP: ffff8880164d9b20 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: dffffc0000000000
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:726
rcu_read_unlock include/linux/rcupdate.h:867 [inline]
page_ext_put+0x58/0xd0 mm/page_ext.c:560
page_table_check_clear.part.0+0x3a7/0x540 mm/page_table_check.c:94
page_table_check_clear mm/page_table_check.c:70 [inline]
__page_table_check_pte_clear+0x328/0x580 mm/page_table_check.c:169
page_table_check_pte_clear include/linux/page_table_check.h:49 [inline]
ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1284 [inline]
get_and_clear_full_ptes include/linux/pgtable.h:678 [inline]
zap_present_folio_ptes mm/memory.c:1493 [inline]
zap_present_ptes mm/memory.c:1576 [inline]
zap_pte_range mm/memory.c:1618 [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+0x21ac/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: 0033:0x7ff34bd77299
Code: Unable to access opcode bytes at 0x7ff34bd7726f.
RSP: 002b:00007ff34cb3d0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007ff34bf05f88 RCX: 00007ff34bd77299
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007ff34bf05f88
RBP: 00007ff34bf05f80 R08: 00007ff34cb3d6c0 R09: 00007ff34cb3d6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff34bf05f8c
R13: 000000000000000b R14: 00007ffc57a3c570 R15: 00007ffc57a3c658
The buggy address belongs to stack of task syz.1.449/6886
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
[ffffc900032e0000, ffffc900032e9000) 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:0xffff88804b93b110 pfn:0x4b93b
memcg:ffff88801cb00802
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff88804b93b110 0000000000000000 00000001ffffffff ffff88801cb00802
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 6880, tgid 6880 (syz.1.447), ts 244138585412, free_ts 244131785922
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 6881 tgid 6881 stack trace:
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+0x45f/0x510 mm/swap_state.c:335
__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 mm/mmu_gather.c:373 [inline]
tlb_finish_mmu+0x168/0x7b0 mm/mmu_gather.c:465
exit_mmap+0x3d1/0xb20 mm/mmap.c:3425
__mmput+0x12a/0x480 kernel/fork.c:1345
mmput+0x62/0x70 kernel/fork.c:1367
exec_mmap fs/exec.c:1089 [inline]
begin_new_exec+0x13bb/0x3390 fs/exec.c:1355
load_elf_binary+0x7f4/0x4d90 fs/binfmt_elf.c:996
search_binary_handler fs/exec.c:1821 [inline]
exec_binprm fs/exec.c:1863 [inline]
bprm_execve fs/exec.c:1914 [inline]
bprm_execve+0x703/0x1960 fs/exec.c:1890
do_execveat_common.isra.0+0x4f1/0x630 fs/exec.c:2021
do_execve fs/exec.c:2095 [inline]
__do_sys_execve fs/exec.c:2171 [inline]
__se_sys_execve fs/exec.c:2166 [inline]
__x64_sys_execve+0x8c/0xb0 fs/exec.c:2166
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:
ffffc900032e7900: 00 f2 f2 f2 00 f2 f2 f2 00 00 f2 f2 00 00 00 00
ffffc900032e7980: 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
>ffffc900032e7a00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00
^
ffffc900032e7a80: 00 00 00 f2 f2 f2 f2 00 00 00 00 00 00 00 00 00
ffffc900032e7b00: 00 00 00 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: e8 35 92 59 f6 call 0xf659923a
5: e8 20 72 e9 ff call 0xffe9722a
a: 90 nop
b: 65 ff 0d d0 7d f2 74 decl %gs:0x74f27dd0(%rip) # 0x74f27de2
12: e9 40 ff ff ff jmp 0xffffff57
17: 0f 1f 00 nopl (%rax)
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: 90 nop
25: 90 nop
26: 90 nop
27: 90 nop
28: 90 nop
29: 90 nop
* 2a: f3 0f 1e fa endbr64 <-- trapping instruction
2e: 48 c7 c6 80 8b b0 8b mov $0xffffffff8bb08b80,%rsi
35: 48 c7 c7 c0 8b b0 8b mov $0xffffffff8bb08bc0,%rdi
3c: e9 .byte 0xe9
3d: f9 stc
3e: fe (bad)
3f: ff .byte 0xff