==================================================================
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 ffffc90003defa50 by task syz.3.1468/11203
CPU: 0 UID: 0 PID: 11203 Comm: syz.3.1468 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+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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x60 kernel/kcov.c:207
Code: e9 d4 71 a4 09 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 e4 0b 78 7e <65> 8b 05 e5 0b 78 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74
RSP: 0018:ffffc90003def4b8 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffc90003def588 RCX: ffffffff813cdd16
RDX: ffff8880262d8000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90003def998 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90003def590
R13: ffffc90003def598 R14: ffffc90003de8000 R15: 0000000000000001
on_stack arch/x86/include/asm/stacktrace.h:58 [inline]
stack_access_ok+0xa0/0x270 arch/x86/kernel/unwind_orc.c:393
deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
unwind_next_frame+0xd9b/0x23a0 arch/x86/kernel/unwind_orc.c:585
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4044
lsm_file_alloc security/security.c:649 [inline]
security_file_alloc+0x41/0x260 security/security.c:2736
init_file+0x99/0x260 fs/file_table.c:152
alloc_empty_file+0x91/0x1e0 fs/file_table.c:206
alloc_file fs/file_table.c:319 [inline]
alloc_file_pseudo+0x147/0x210 fs/file_table.c:350
__anon_inode_getfile+0x136/0x3e0 fs/anon_inodes.c:109
__anon_inode_getfd fs/anon_inodes.c:234 [inline]
anon_inode_getfd+0x52/0xb0 fs/anon_inodes.c:269
bpf_map_new_fd kernel/bpf/syscall.c:1021 [inline]
bpf_map_new_fd kernel/bpf/syscall.c:1013 [inline]
map_create+0xce0/0x1c50 kernel/bpf/syscall.c:1397
__sys_bpf+0xd73/0x4a30 kernel/bpf/syscall.c:5692
__do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
__x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5815
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
RIP: 0033:0x7ff839175f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff838bff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff839305f60 RCX: 00007ff839175f19
RDX: 0000000000000048 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007ff8391e4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff839305f60 R15: 00007ffe20958608
The buggy address belongs to stack of task syz.3.1468/11203
and is located at offset 88 in frame:
alloc_file_pseudo+0x0/0x210 include/linux/percpu_counter.h:71
This frame has 2 objects:
[32, 48) 'path'
[64, 80) 'this'
The buggy address belongs to the virtual mapping at
[ffffc90003de8000, ffffc90003df1000) 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:0xffff8880593aa960 pfn:0x593aa
memcg:ffff88801a701702
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff8880593aa960 0000000000000000 00000001ffffffff ffff88801a701702
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 962, tgid 962 (kworker/u8:6), ts 853729378484, free_ts 852956913794
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
user_mode_thread+0xb4/0xf0 kernel/fork.c:2859
call_usermodehelper_exec_sync kernel/umh.c:133 [inline]
call_usermodehelper_exec_work+0x6b/0x170 kernel/umh.c:164
process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page last free pid 11007 tgid 11007 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
mon_free_buff drivers/usb/mon/mon_bin.c:1360 [inline]
mon_bin_release+0x160/0x240 drivers/usb/mon/mon_bin.c:795
__fput+0x40b/0xbb0 fs/file_table.c:422
task_work_run+0x151/0x250 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+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffffc90003def900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003def980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1
>ffffc90003defa00: f1 f1 f1 00 00 f2 f2 00 00 f3 f3 00 00 00 00 00
^
ffffc90003defa80: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00
ffffc90003defb00: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
BUG: unable to handle page fault for address: ffffffff00000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD db80067 P4D db80067 PUD 0
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 11203 Comm: syz.3.1468 Tainted: G B 6.10.0-syzkaller-12381-gc33ffdb70cc6 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:__dev_flush+0x53/0x1e0 kernel/bpf/devmap.c:424
Code: 02 00 0f 85 98 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 2f 48 8d 5d 80 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 69 01 00 00 <48> 8b 45 00 49 39 ef 4c 8d 60 80 0f 84 03 01 00 00 48 bd 00 00 00
RSP: 0018:ffffc90000007c80 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: fffffffeffffff80 RCX: ffffffff88f9b189
RDX: 1fffffffe0000000 RSI: ffffffff81b12466 RDI: ffffc90003defa68
RBP: ffffffff00000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 6e696c6261736944 R12: ffffc90003defa58
R13: ffff888022250008 R14: ffffc90003defa68 R15: ffffc90003defa68
FS: 00007ff838bff6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff00000000 CR3: 000000005c17a000 CR4: 0000000000350ef0
Call Trace:
xdp_do_check_flushed+0x2f2/0x4e0 net/core/filter.c:4300
__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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x60 kernel/kcov.c:207
Code: e9 d4 71 a4 09 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 e4 0b 78 7e <65> 8b 05 e5 0b 78 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74
RSP: 0018:ffffc90003def4b8 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffc90003def588 RCX: ffffffff813cdd16
RDX: ffff8880262d8000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90003def998 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90003def590
R13: ffffc90003def598 R14: ffffc90003de8000 R15: 0000000000000001
on_stack arch/x86/include/asm/stacktrace.h:58 [inline]
stack_access_ok+0xa0/0x270 arch/x86/kernel/unwind_orc.c:393
deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
unwind_next_frame+0xd9b/0x23a0 arch/x86/kernel/unwind_orc.c:585
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4044
lsm_file_alloc security/security.c:649 [inline]
security_file_alloc+0x41/0x260 security/security.c:2736
init_file+0x99/0x260 fs/file_table.c:152
alloc_empty_file+0x91/0x1e0 fs/file_table.c:206
alloc_file fs/file_table.c:319 [inline]
alloc_file_pseudo+0x147/0x210 fs/file_table.c:350
__anon_inode_getfile+0x136/0x3e0 fs/anon_inodes.c:109
__anon_inode_getfd fs/anon_inodes.c:234 [inline]
anon_inode_getfd+0x52/0xb0 fs/anon_inodes.c:269
bpf_map_new_fd kernel/bpf/syscall.c:1021 [inline]
bpf_map_new_fd kernel/bpf/syscall.c:1013 [inline]
map_create+0xce0/0x1c50 kernel/bpf/syscall.c:1397
__sys_bpf+0xd73/0x4a30 kernel/bpf/syscall.c:5692
__do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
__x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5815
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
RIP: 0033:0x7ff839175f19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff838bff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff839305f60 RCX: 00007ff839175f19
RDX: 0000000000000048 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007ff8391e4e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff839305f60 R15: 00007ffe20958608
Modules linked in:
CR2: ffffffff00000000
---[ end trace 0000000000000000 ]---
RIP: 0010:__dev_flush+0x53/0x1e0 kernel/bpf/devmap.c:424
Code: 02 00 0f 85 98 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 2f 48 8d 5d 80 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 69 01 00 00 <48> 8b 45 00 49 39 ef 4c 8d 60 80 0f 84 03 01 00 00 48 bd 00 00 00
RSP: 0018:ffffc90000007c80 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: fffffffeffffff80 RCX: ffffffff88f9b189
RDX: 1fffffffe0000000 RSI: ffffffff81b12466 RDI: ffffc90003defa68
RBP: ffffffff00000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 6e696c6261736944 R12: ffffc90003defa58
R13: ffff888022250008 R14: ffffc90003defa68 R15: ffffc90003defa68
FS: 00007ff838bff6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff00000000 CR3: 000000005c17a000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: e9 d4 71 a4 09 jmp 0x9a471d9
5: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
c: 00 00
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: f3 0f 1e fa endbr64
22: 65 48 8b 15 e4 0b 78 mov %gs:0x7e780be4(%rip),%rdx # 0x7e780c0e
29: 7e
* 2a: 65 8b 05 e5 0b 78 7e mov %gs:0x7e780be5(%rip),%eax # 0x7e780c16 <-- trapping instruction
31: a9 00 01 ff 00 test $0xff0100,%eax
36: 48 8b 34 24 mov (%rsp),%rsi
3a: 74 0f je 0x4b
3c: f6 c4 01 test $0x1,%ah
3f: 74 .byte 0x74