==================================================================
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 ffffc900196d7a50 by task syz.5.327/6384
CPU: 0 UID: 0 PID: 6384 Comm: syz.5.327 Not tainted 6.10.0-syzkaller-12881-g6342649c33d2 #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+0x219/0x8f0 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:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5062
Code: a9 0a 00 00 44 8b 0d 67 46 b7 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 c9 cd 36 00 fb 65 48 8b 1d 10 86 a7 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:ffffc900196d6fb8 EFLAGS: 00000202
RAX: 0000000000000879 RBX: ffff8880218ada00 RCX: 1ffffffff28ca35a
RDX: 0000000000000000 RSI: ffffffff8b4cd740 RDI: ffffffff8bb0b8c0
RBP: ffffc900196d7000 R08: 0000000000000001 R09: fffffbfff28c76df
R10: ffffffff9463b6ff R11: 0000000000000000 R12: ffff8880b923fb98
R13: ffff888018b55a00 R14: 0000000000000000 R15: ffff8880b923ee00
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xe3f/0x5490 kernel/sched/core.c:6529
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6708
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x1c90/0x23a0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
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:2660
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: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
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: 0033:0x7fc1f5977299
Code: Unable to access opcode bytes at 0x7fc1f597726f.
RSP: 002b:00007fc1f67b7048 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc1f5b06058 RCX: 00007fc1f5977299
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007fc1f59e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc1f5b06058 R15: 00007ffc69899428
The buggy address belongs to stack of task syz.5.327/6384
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
[ffffc900196d0000, ffffc900196d9000) 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:0xffff8880250298c0 pfn:0x25029
memcg:ffff88804bbcb802
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff8880250298c0 0000000000000000 00000001ffffffff ffff88804bbcb802
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 6360, tgid 6360 (syz.2.320), ts 220957193477, free_ts 220900406567
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:3442
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4700
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 5929 tgid 5929 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:2660
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: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
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]
irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
Memory state around the buggy address:
ffffc900196d7900: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900196d7980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900196d7a00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00
^
ffffc900196d7a80: 00 00 00 f2 f2 f2 f2 00 00 00 00 00 00 00 00 00
ffffc900196d7b00: 00 00 00 00 00 00 00 f3 f3 f3 f3 00 00 00 00 00
==================================================================
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 6384 Comm: syz.5.327 Tainted: G B 6.10.0-syzkaller-12881-g6342649c33d2 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:bq_flush_to_queue+0x4a/0x530 kernel/bpf/cpumap.c:675
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 dc 04 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 50 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e d6 03 00 00 41 8b 06 89 44 24
RSP: 0018:ffffc90000007c10 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: ffff88802043d6d8 RCX: ffffffff88f9ef99
RDX: 0000000000000000 RSI: ffffffff81b17416 RDI: ffff88802043d5d0
RBP: ffff88802043d580 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000010 R11: 6e696c6261736944 R12: dffffc0000000000
R13: ffff88802043d580 R14: 0000000000000000 R15: ffffc900196d7a78
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f091ded2ef8 CR3: 0000000060fde000 CR4: 0000000000350ef0
Call Trace:
__cpu_map_flush+0x7b/0x110 kernel/bpf/cpumap.c:767
xdp_do_check_flushed+0x163/0x4e0 net/core/filter.c:4311
__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+0x219/0x8f0 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:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5062
Code: a9 0a 00 00 44 8b 0d 67 46 b7 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 c9 cd 36 00 fb 65 48 8b 1d 10 86 a7 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:ffffc900196d6fb8 EFLAGS: 00000202
RAX: 0000000000000879 RBX: ffff8880218ada00 RCX: 1ffffffff28ca35a
RDX: 0000000000000000 RSI: ffffffff8b4cd740 RDI: ffffffff8bb0b8c0
RBP: ffffc900196d7000 R08: 0000000000000001 R09: fffffbfff28c76df
R10: ffffffff9463b6ff R11: 0000000000000000 R12: ffff8880b923fb98
R13: ffff888018b55a00 R14: 0000000000000000 R15: ffff8880b923ee00
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xe3f/0x5490 kernel/sched/core.c:6529
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6708
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x1c90/0x23a0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
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:2660
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: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
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: 0033:0x7fc1f5977299
Code: Unable to access opcode bytes at 0x7fc1f597726f.
RSP: 002b:00007fc1f67b7048 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc1f5b06058 RCX: 00007fc1f5977299
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007fc1f59e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fc1f5b06058 R15: 00007ffc69899428
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bq_flush_to_queue+0x4a/0x530 kernel/bpf/cpumap.c:675
Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 dc 04 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 75 50 4c 89 f2 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e d6 03 00 00 41 8b 06 89 44 24
RSP: 0018:ffffc90000007c10 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: ffff88802043d6d8 RCX: ffffffff88f9ef99
RDX: 0000000000000000 RSI: ffffffff81b17416 RDI: ffff88802043d5d0
RBP: ffff88802043d580 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000010 R11: 6e696c6261736944 R12: dffffc0000000000
R13: ffff88802043d580 R14: 0000000000000000 R15: ffffc900196d7a78
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f091ded2ef8 CR3: 0000000060fde000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: a9 0a 00 00 44 test $0x4400000a,%eax
5: 8b 0d 67 46 b7 0e mov 0xeb74667(%rip),%ecx # 0xeb74672
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 c9 cd 36 00 call 0x36cdea
21: fb sti
22: 65 48 8b 1d 10 86 a7 mov %gs:0x7ea78610(%rip),%rbx # 0x7ea7863a
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