==================================================================
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 ffffc900031ffa50 by task syz.2.218/6022
CPU: 1 UID: 0 PID: 6022 Comm: syz.2.218 Not tainted 6.10.0-syzkaller-11840-g933069701c1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
<IRQ>
__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
</IRQ>
<TASK>
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5062
Code: a9 0a 00 00 44 8b 0d c7 75 8c 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 29 cf 36 00 fb 65 48 8b 1d 70 da a8 7e <48> 8d bb f8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900031ff310 EFLAGS: 00000206
RAX: 0000000000000c95 RBX: ffff8880215e0000 RCX: 1ffffffff285c973
RDX: 0000000000000000 RSI: ffffffff8b2cc580 RDI: ffffffff8b90c740
RBP: ffffc900031ff358 R08: 0000000000000001 R09: fffffbfff2859cdf
R10: ffffffff942ce6ff R11: 0000000000000000 R12: ffff8880b933fb98
R13: ffff8880215e1e00 R14: 0000000000000000 R15: ffff8880b933ee00
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xe3f/0x5490 kernel/sched/core.c:6529
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_is_held_type+0x107/0x150 kernel/locking/lockdep.c:5836
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 1c f2 12 75 83 f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 ed eb
RSP: 0000:ffffc900031ff5d8 EFLAGS: 00000286
RAX: 0000000000000046 RBX: ffff8880215e0ae0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b2cc880 RDI: ffffffff8b90c740
RBP: ffffffff8dbb50a0 R08: 0000000000000006 R09: 000000110c400000
R10: 000000110c2d9000 R11: 0000000000000000 R12: ffff8880215e0000
R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000001
lock_is_held include/linux/lockdep.h:249 [inline]
__might_resched+0x4ca/0x5e0 kernel/sched/core.c:8399
zap_pmd_range mm/memory.c:1739 [inline]
zap_pud_range mm/memory.c:1765 [inline]
zap_p4d_range mm/memory.c:1786 [inline]
unmap_page_range+0xbf8/0x3c10 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:3382
__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: 0033:0x7fe71bb75f19
Code: Unable to access opcode bytes at 0x7fe71bb75eef.
RSP: 002b:00007fe71c8660f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fe71bd05f68 RCX: 00007fe71bb75f19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe71bd05f68
RBP: 00007fe71bd05f60 R08: 00007fe71c8666c0 R09: 00007fe71c8666c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe71bd05f6c
R13: 000000000000000b R14: 00007ffda37dca80 R15: 00007ffda37dcb68
</TASK>
The buggy address belongs to stack of task syz.2.218/6022
and is located at offset 24 in frame:
exit_mmap+0x0/0xb20 mm/mmap.c:3202
This frame has 2 objects:
[32, 96) 'vmi'
[128, 256) 'tlb'
The buggy address belongs to the virtual mapping at
[ffffc900031f8000, ffffc90003201000) 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:0x2 pfn:0x62f59
memcg:ffff88802e428982
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000002 0000000000000000 00000001ffffffff ffff88802e428982
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 6019, tgid 6019 (syz.2.218), ts 214867562241, free_ts 214629617024
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 6015 tgid 6015 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+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 mm/mmu_gather.c:373 [inline]
tlb_finish_mmu+0x168/0x7b0 mm/mmu_gather.c:465
exit_mmap+0x3d1/0xb20 mm/mmap.c:3395
__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:
ffffc900031ff900: 00 f2 f2 f2 00 f2 f2 f2 00 00 f2 f2 00 00 00 00
ffffc900031ff980: 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00
>ffffc900031ffa00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00
^
ffffc900031ffa80: 00 00 00 f2 f2 f2 f2 00 00 00 00 00 00 00 00 00
ffffc900031ffb00: 00 00 00 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: a9 0a 00 00 44 test $0x4400000a,%eax
5: 8b 0d c7 75 8c 0e mov 0xe8c75c7(%rip),%ecx # 0xe8c75d2
b: 45 85 c9 test %r9d,%r9d
e: 0f 85 c0 01 00 00 jne 0x1d4
14: 48 89 df mov %rbx,%rdi
17: e8 ae f8 ff ff call 0xfffff8ca
1c: e8 29 cf 36 00 call 0x36cf4a
21: fb sti
22: 65 48 8b 1d 70 da a8 mov %gs:0x7ea8da70(%rip),%rbx # 0x7ea8da9a
29: 7e
* 2a: 48 8d bb f8 15 00 00 lea 0x15f8(%rbx),%rdi <-- trapping instruction
31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
38: fc ff df
3b: 48 89 fa mov %rdi,%rdx
3e: 48 rex.W
3f: c1 .byte 0xc1