==================================================================
BUG: KASAN: stack-out-of-bounds in __get_unaligned_cpu32 include/linux/unaligned/packed_struct.h:19 [inline]
BUG: KASAN: stack-out-of-bounds in jhash include/linux/jhash.h:82 [inline]
BUG: KASAN: stack-out-of-bounds in hash+0x465/0xc20 kernel/bpf/bloom_filter.c:39
Read of size 4 at addr ffffc90000c3f260 by task syz-executor.2/14028
CPU: 1 PID: 14028 Comm: syz-executor.2 Not tainted 6.1.75-syzkaller-00003-g4d55129aea65 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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_load_n_noabort+0xf/0x20 mm/kasan/report_generic.c:361
__get_unaligned_cpu32 include/linux/unaligned/packed_struct.h:19 [inline]
jhash include/linux/jhash.h:82 [inline]
hash+0x465/0xc20 kernel/bpf/bloom_filter.c:39
bloom_map_push_elem+0xce/0x180 kernel/bpf/bloom_filter.c:69
bpf_prog_bfd19630a338eafb+0x3f/0x43
bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2275 [inline]
bpf_trace_run1+0x106/0x240 kernel/trace/bpf_trace.c:2313
__bpf_trace_ext4_request_blocks+0x1d/0x30 include/trace/events/ext4.h:814
trace_ext4_request_blocks include/trace/events/ext4.h:814 [inline]
ext4_mb_new_blocks+0x4520/0x48f0 fs/ext4/mballoc.c:5601
ext4_ext_map_blocks+0x19ca/0x71e0 fs/ext4/extents.c:4287
ext4_map_blocks+0xa36/0x1ca0 fs/ext4/inode.c:651
ext4_getblk+0x1eb/0x7b0 fs/ext4/inode.c:866
ext4_bread+0x2f/0x180 fs/ext4/inode.c:922
ext4_append+0x31f/0x5b0 fs/ext4/namei.c:83
ext4_init_new_dir+0x33f/0x620 fs/ext4/namei.c:2981
ext4_mkdir+0x4f2/0xce0 fs/ext4/namei.c:3027
vfs_mkdir+0x398/0x570 fs/namei.c:4113
do_mkdirat+0x1eb/0x450 fs/namei.c:4138
__do_sys_mkdir fs/namei.c:4158 [inline]
__se_sys_mkdir fs/namei.c:4156 [inline]
__x64_sys_mkdir+0x6e/0x80 fs/namei.c:4156
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4fe8a7dd69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4fe97a80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f4fe8babf80 RCX: 00007f4fe8a7dd69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f4fe8aca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4fe8babf80 R15: 00007ffda1aa3eb8
The buggy address belongs to stack of task syz-executor.2/14028
and is located at offset 0 in frame:
bpf_trace_run1+0x0/0x240
This frame has 1 object:
[32, 40) 'args'
The buggy address belongs to the virtual mapping at
[ffffc90000c38000, ffffc90000c41000) created by:
copy_process+0x5c3/0x3530 kernel/fork.c:2199
The buggy address belongs to the physical page:
page:ffffea0004738f00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11ce3c
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 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 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 14017, tgid 14017 (syz-executor.2), ts 332408704322, free_ts 331074222435
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:5712
__vmalloc_area_node mm/vmalloc.c:3062 [inline]
__vmalloc_node_range+0x89b/0x1540 mm/vmalloc.c:3234
alloc_thread_stack_node kernel/fork.c:318 [inline]
dup_task_struct+0x3d6/0x7d0 kernel/fork.c:1080
copy_process+0x5c3/0x3530 kernel/fork.c:2199
kernel_clone+0x229/0x890 kernel/fork.c:2786
__do_sys_clone3 kernel/fork.c:3087 [inline]
__se_sys_clone3 kernel/fork.c:3071 [inline]
__x64_sys_clone3+0x35c/0x390 kernel/fork.c:3071
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
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:5801
free_pages+0x7c/0x90 mm/page_alloc.c:5812
kasan_depopulate_vmalloc_pte+0x6a/0x90 mm/kasan/shadow.c:375
apply_to_pte_range mm/memory.c:2659 [inline]
apply_to_pmd_range mm/memory.c:2703 [inline]
apply_to_pud_range mm/memory.c:2739 [inline]
apply_to_p4d_range mm/memory.c:2775 [inline]
__apply_to_page_range+0x8dd/0xbe0 mm/memory.c:2809
apply_to_existing_page_range+0x38/0x50 mm/memory.c:2842
kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:492
__purge_vmap_area_lazy+0x152c/0x1680 mm/vmalloc.c:1781
drain_vmap_area_work+0x3e/0xd0 mm/vmalloc.c:1810
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:306
Memory state around the buggy address:
ffffc90000c3f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000c3f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90000c3f200: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
^
ffffc90000c3f280: 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000c3f300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
BUG: unable to handle page fault for address: ffffc90000c40000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 100000067 P4D 100000067 PUD 100154067 PMD 11a5e0067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 14028 Comm: syz-executor.2 Tainted: G B 6.1.75-syzkaller-00003-g4d55129aea65 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:jhash include/linux/jhash.h:81 [inline]
RIP: 0010:hash+0x2d8/0xc20 kernel/bpf/bloom_filter.c:39
Code: 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 2b 01 00 00 4a 8d 7c 36 07 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 43 01 00 00 <42> 03 5c 36 04 4a 8d 7c 36 08 48 89 f8 48 c1 e8 03 0f b6 04 10 84
RSP: 0018:ffffc90000c3f170 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 000000002092171f RCX: ffffffff8191d7a5
RDX: dffffc0000000000 RSI: ffffc90000c3f228 RDI: ffffc90000c40003
RBP: ffffc90000c3f1b0 R08: 00000000fffff21d R09: fffffbfff0f260fd
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000efac5bcb
R13: 00000000fffff21d R14: 0000000000000dd4 R15: 00000000e7c48897
FS: 00007f4fe97a86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000c40000 CR3: 0000000110d79000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bloom_map_push_elem+0xce/0x180 kernel/bpf/bloom_filter.c:69
bpf_prog_bfd19630a338eafb+0x3f/0x43
bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2275 [inline]
bpf_trace_run1+0x106/0x240 kernel/trace/bpf_trace.c:2313
__bpf_trace_ext4_request_blocks+0x1d/0x30 include/trace/events/ext4.h:814
trace_ext4_request_blocks include/trace/events/ext4.h:814 [inline]
ext4_mb_new_blocks+0x4520/0x48f0 fs/ext4/mballoc.c:5601
ext4_ext_map_blocks+0x19ca/0x71e0 fs/ext4/extents.c:4287
ext4_map_blocks+0xa36/0x1ca0 fs/ext4/inode.c:651
ext4_getblk+0x1eb/0x7b0 fs/ext4/inode.c:866
ext4_bread+0x2f/0x180 fs/ext4/inode.c:922
ext4_append+0x31f/0x5b0 fs/ext4/namei.c:83
ext4_init_new_dir+0x33f/0x620 fs/ext4/namei.c:2981
ext4_mkdir+0x4f2/0xce0 fs/ext4/namei.c:3027
vfs_mkdir+0x398/0x570 fs/namei.c:4113
do_mkdirat+0x1eb/0x450 fs/namei.c:4138
__do_sys_mkdir fs/namei.c:4158 [inline]
__se_sys_mkdir fs/namei.c:4156 [inline]
__x64_sys_mkdir+0x6e/0x80 fs/namei.c:4156
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4fe8a7dd69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4fe97a80c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f4fe8babf80 RCX: 00007f4fe8a7dd69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f4fe8aca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4fe8babf80 R15: 00007ffda1aa3eb8
Modules linked in:
CR2: ffffc90000c40000
---[ end trace 0000000000000000 ]---
RIP: 0010:jhash include/linux/jhash.h:81 [inline]
RIP: 0010:hash+0x2d8/0xc20 kernel/bpf/bloom_filter.c:39
Code: 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 2b 01 00 00 4a 8d 7c 36 07 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 43 01 00 00 <42> 03 5c 36 04 4a 8d 7c 36 08 48 89 f8 48 c1 e8 03 0f b6 04 10 84
RSP: 0018:ffffc90000c3f170 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 000000002092171f RCX: ffffffff8191d7a5
RDX: dffffc0000000000 RSI: ffffc90000c3f228 RDI: ffffc90000c40003
RBP: ffffc90000c3f1b0 R08: 00000000fffff21d R09: fffffbfff0f260fd
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000efac5bcb
R13: 00000000fffff21d R14: 0000000000000dd4 R15: 00000000e7c48897
FS: 00007f4fe97a86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000c40000 CR3: 0000000110d79000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 89 f8 mov %edi,%eax
2: 48 c1 e8 03 shr $0x3,%rax
6: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax
a: 84 c0 test %al,%al
c: 0f 85 2b 01 00 00 jne 0x13d
12: 4a 8d 7c 36 07 lea 0x7(%rsi,%r14,1),%rdi
17: 48 89 f8 mov %rdi,%rax
1a: 48 c1 e8 03 shr $0x3,%rax
1e: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax
22: 84 c0 test %al,%al
24: 0f 85 43 01 00 00 jne 0x16d
* 2a: 42 03 5c 36 04 add 0x4(%rsi,%r14,1),%ebx <-- trapping instruction
2f: 4a 8d 7c 36 08 lea 0x8(%rsi,%r14,1),%rdi
34: 48 89 f8 mov %rdi,%rax
37: 48 c1 e8 03 shr $0x3,%rax
3b: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax
3f: 84 .byte 0x84