==================================================================
BUG: KASAN: use-after-free in bq_enqueue kernel/bpf/cpumap.c:749 [inline]
BUG: KASAN: use-after-free in cpu_map_enqueue+0xb4/0x370 kernel/bpf/cpumap.c:775
Read of size 8 at addr ffff888121552a08 by task syz.1.688/2986
CPU: 0 PID: 2986 Comm: syz.1.688 Not tainted 6.1.90-syzkaller-00122-g7fa70ede91bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:316 [inline]
print_report+0x158/0x4e0 mm/kasan/report.c:427
kasan_report+0x13c/0x170 mm/kasan/report.c:531
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
bq_enqueue kernel/bpf/cpumap.c:749 [inline]
cpu_map_enqueue+0xb4/0x370 kernel/bpf/cpumap.c:775
__xdp_do_redirect_frame net/core/filter.c:4272 [inline]
xdp_do_redirect_frame+0x232/0x750 net/core/filter.c:4330
xdp_test_run_batch net/bpf/test_run.c:314 [inline]
bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362
bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1387
bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3650
__sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5005
__do_sys_bpf kernel/bpf/syscall.c:5091 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5089 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5089
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f583c777299
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:00007f583d500048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f583c905f80 RCX: 00007f583c777299
RDX: 0000000000000050 RSI: 0000000020000240 RDI: 000000000000000a
RBP: 00007f583c7e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f583c905f80 R15: 00007ffe6aee6498
Allocated by task 2529:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
kasan_kmalloc include/linux/kasan.h:212 [inline]
kmalloc_trace+0x44/0xa0 mm/slab_common.c:1052
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:692 [inline]
push_stack+0x8e/0x4f0 kernel/bpf/verifier.c:1296
check_cond_jmp_op kernel/bpf/verifier.c:10532 [inline]
do_check+0x91be/0xe040 kernel/bpf/verifier.c:12767
do_check_common+0x6ce/0xed0 kernel/bpf/verifier.c:14968
do_check_main kernel/bpf/verifier.c:15031 [inline]
bpf_check+0x673b/0x16560 kernel/bpf/verifier.c:15608
bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2611
__sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:4987
__do_sys_bpf kernel/bpf/syscall.c:5091 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5089 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5089
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 2529:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1745 [inline]
slab_free_freelist_hook mm/slub.c:1771 [inline]
slab_free mm/slub.c:3684 [inline]
__kmem_cache_free+0x218/0x3b0 mm/slub.c:3697
kfree+0x7a/0xf0 mm/slab_common.c:1009
pop_stack kernel/bpf/verifier.c:1282 [inline]
do_check_common+0x7f0/0xed0 kernel/bpf/verifier.c:14977
do_check_main kernel/bpf/verifier.c:15031 [inline]
bpf_check+0x673b/0x16560 kernel/bpf/verifier.c:15608
bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2611
__sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:4987
__do_sys_bpf kernel/bpf/syscall.c:5091 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5089 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5089
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x56/0x310 kernel/workqueue.c:1368
__queue_work+0x9b6/0xd70 kernel/workqueue.c:1527
queue_work_on+0x105/0x170 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
schedule_work include/linux/workqueue.h:571 [inline]
__cpu_map_entry_replace kernel/bpf/cpumap.c:558 [inline]
cpu_map_free+0x1e7/0x2c0 kernel/bpf/cpumap.c:641
bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:622
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
__call_rcu_common kernel/rcu/tree.c:2806 [inline]
call_rcu+0xee/0x1340 kernel/rcu/tree.c:2925
__cpu_map_entry_replace kernel/bpf/cpumap.c:556 [inline]
cpu_map_free+0x109/0x2c0 kernel/bpf/cpumap.c:641
bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:622
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
The buggy address belongs to the object at ffff888121552a00
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
192-byte region [ffff888121552a00, ffff888121552ac0)
The buggy address belongs to the physical page:
page:ffffea0004855480 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121552
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 ffffea0004b2cf80 dead000000000002 ffff888100042c00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 1325, tgid 1317 (syz.0.277), ts 53408745143, free_ts 48161351999
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590
prep_new_page+0x1b/0x110 mm/page_alloc.c:2597
get_page_from_freelist+0x27ea/0x2870 mm/page_alloc.c:4425
__alloc_pages+0x3a1/0x780 mm/page_alloc.c:5714
alloc_slab_page+0x6c/0xf0
allocate_slab mm/slub.c:1962 [inline]
new_slab+0x90/0x3e0 mm/slub.c:2015
___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
__slab_alloc+0x5d/0xa0 mm/slub.c:3302
slab_alloc_node mm/slub.c:3387 [inline]
__kmem_cache_alloc_node+0x1af/0x250 mm/slub.c:3460
__do_kmalloc_node mm/slab_common.c:956 [inline]
__kmalloc_node_track_caller+0xa2/0x1e0 mm/slab_common.c:977
__do_krealloc mm/slab_common.c:1354 [inline]
krealloc+0x64/0xf0 mm/slab_common.c:1387
copy_array kernel/bpf/verifier.c:1024 [inline]
copy_verifier_state+0x301/0xab0 kernel/bpf/verifier.c:1208
push_stack+0x19d/0x4f0 kernel/bpf/verifier.c:1306
check_cond_jmp_op kernel/bpf/verifier.c:10532 [inline]
do_check+0x91be/0xe040 kernel/bpf/verifier.c:12767
do_check_common+0x6ce/0xed0 kernel/bpf/verifier.c:14968
do_check_main kernel/bpf/verifier.c:15031 [inline]
bpf_check+0x673b/0x16560 kernel/bpf/verifier.c:15608
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1498 [inline]
free_pcp_prepare mm/page_alloc.c:1572 [inline]
free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594
free_the_page mm/page_alloc.c:798 [inline]
__free_pages+0x61/0xf0 mm/page_alloc.c:5803
__vunmap+0x9f3/0xb60 mm/vmalloc.c:2728
__vfree mm/vmalloc.c:2776 [inline]
vfree+0x5c/0x80 mm/vmalloc.c:2807
kcov_put kernel/kcov.c:428 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:524
__fput+0x3ab/0x870 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x24d/0x2e0 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xbd5/0x2b80 kernel/exit.c:875
do_group_exit+0x21a/0x2d0 kernel/exit.c:1025
__do_sys_exit_group kernel/exit.c:1036 [inline]
__se_sys_exit_group kernel/exit.c:1034 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1034
x64_sys_call+0x610/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Memory state around the buggy address:
ffff888121552900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888121552980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888121552a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888121552a80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff888121552b00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0xe0be4d413ee00147: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x05f28a09f7000a38-0x05f28a09f7000a3f]
CPU: 0 PID: 2986 Comm: syz.1.688 Tainted: G B 6.1.90-syzkaller-00122-g7fa70ede91bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline]
RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 16 b4 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08
RSP: 0018:ffffc90000e27610 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff86541880 RCX: 0000000000040000
RDX: ffffc90000e69000 RSI: 0000000000034f3c RDI: 0000000000034f3d
RBP: ffffc90000e27648 R08: ffffffff81980bee R09: fffffbfff0f2d6fd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7000000
R13: 00be51413ee00147 R14: 05f28a09f7000a39 R15: 05f30188000009e1
FS: 00007f583d5006c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000508f0000 CR3: 000000012cb5e000 CR4: 00000000003506b0
DR0: 0000000020000300 DR1: 0000000020000040 DR2: 0000000020000040
DR3: 0000000020000040 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__xdp_do_redirect_frame net/core/filter.c:4272 [inline]
xdp_do_redirect_frame+0x232/0x750 net/core/filter.c:4330
xdp_test_run_batch net/bpf/test_run.c:314 [inline]
bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362
bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1387
bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3650
__sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5005
__do_sys_bpf kernel/bpf/syscall.c:5091 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5089 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5089
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f583c777299
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:00007f583d500048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f583c905f80 RCX: 00007f583c777299
RDX: 0000000000000050 RSI: 0000000020000240 RDI: 000000000000000a
RBP: 00007f583c7e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f583c905f80 R15: 00007ffe6aee6498
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline]
RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 16 b4 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08
RSP: 0018:ffffc90000e27610 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff86541880 RCX: 0000000000040000
RDX: ffffc90000e69000 RSI: 0000000000034f3c RDI: 0000000000034f3d
RBP: ffffc90000e27648 R08: ffffffff81980bee R09: fffffbfff0f2d6fd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7000000
R13: 00be51413ee00147 R14: 05f28a09f7000a39 R15: 05f30188000009e1
FS: 00007f583d5006c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000508f0000 CR3: 000000012cb5e000 CR4: 00000000003506b0
DR0: 0000000020000300 DR1: 0000000020000040 DR2: 0000000020000040
DR3: 0000000020000040 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: e8 03 42 80 3c call 0x3c804208
5: 30 00 xor %al,(%rax)
7: 74 08 je 0x11
9: 48 89 df mov %rbx,%rdi
c: e8 16 b4 24 00 call 0x24b427
11: 4c 8b 23 mov (%rbx),%r12
14: 4f 8d 74 3c 58 lea 0x58(%r12,%r15,1),%r14
19: 4d 89 f5 mov %r14,%r13
1c: 49 c1 ed 03 shr $0x3,%r13
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 41 0f b6 44 05 00 movzbl 0x0(%r13,%rax,1),%eax <-- trapping instruction
30: 84 c0 test %al,%al
32: 0f 85 a8 01 00 00 jne 0x1e0
38: 4d 01 fc add %r15,%r12
3b: 41 8b 1e mov (%r14),%ebx
3e: bf .byte 0xbf
3f: 08 .byte 0x8