==================================================================
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 ffffc90002187340 by task syz-executor.1/7964
CPU: 1 PID: 7964 Comm: syz-executor.1 Not tainted 6.1.75-syzkaller-00037-gdcb09569bbff #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_peek_elem+0xac/0x1a0 kernel/bpf/bloom_filter.c:51
bpf_prog_00798911c748094f+0x3a/0x3e
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_run3+0x177/0x2e0 kernel/trace/bpf_trace.c:2315
__bpf_trace_ext4_discard_preallocations+0x2b/0x40 include/trace/events/ext4.h:767
trace_ext4_discard_preallocations include/trace/events/ext4.h:767 [inline]
ext4_discard_preallocations+0xe8e/0xef0 fs/ext4/mballoc.c:5015
ext4_truncate+0x8e4/0xfb0 fs/ext4/inode.c:4276
ext4_setattr+0x1107/0x1a50 fs/ext4/inode.c:5586
notify_change+0xd53/0x1010 fs/attr.c:499
do_truncate+0x21c/0x300 fs/open.c:66
handle_truncate fs/namei.c:3292 [inline]
do_open fs/namei.c:3637 [inline]
path_openat+0x2726/0x2d60 fs/namei.c:3790
do_filp_open+0x230/0x480 fs/namei.c:3817
do_sys_openat2+0x13f/0x850 fs/open.c:1341
do_sys_open fs/open.c:1357 [inline]
__do_sys_openat fs/open.c:1373 [inline]
__se_sys_openat fs/open.c:1368 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1368
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: 0033:0x7fcf3f47dea9
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:00007fcf402800c8 EFLAGS: 00000246
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fcf3f5abf80 RCX: 00007fcf3f47dea9
RDX: 000000000000275a RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007fcf3f4ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcf3f5abf80 R15: 00007fff5ea9d468
The buggy address belongs to stack of task syz-executor.1/7964
and is located at offset 0 in frame:
bpf_trace_run3+0x0/0x2e0
This frame has 1 object:
[32, 56) 'args'
The buggy address belongs to the virtual mapping at
[ffffc90002180000, ffffc90002189000) created by:
copy_process+0x5c3/0x3530 kernel/fork.c:2199
The buggy address belongs to the physical page:
page:ffffea0004a333c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x128ccf
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 7961, tgid 7961 (syz-executor.1), ts 153384396769, free_ts 152990150052
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
__vunmap+0x9f3/0xb60 mm/vmalloc.c:2728
free_work+0x5b/0x80 mm/vmalloc.c:98
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:
ffffc90002187200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90002187280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90002187300: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 f3
^
ffffc90002187380: f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90002187400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
BUG: unable to handle page fault for address: ffffc90002188000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 100000067
P4D 100000067
PUD 100154067
PMD 11e292067
PTE 0
Oops: 0000 [#2] PREEMPT SMP KASAN
CPU: 1 PID: 7964 Comm: syz-executor.1 Tainted: G B D 6.1.75-syzkaller-00037-gdcb09569bbff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:jhash include/linux/jhash.h:82 [inline]
RIP: 0010:hash+0x30d/0xc20 kernel/bpf/bloom_filter.c:39
Code: 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 56 01 00 00 4a 8d 7c 36 0b 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 6e 01 00 00 <46> 03 64 36 08 45 29 e7 44 89 e0 c1 c0 04 44 31 f8 41 01 dc 89 c1
RSP: 0018:ffffc90002187248 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 00000000a439a255 RCX: ffffffff8191c615
RDX: 0000000000000000 RSI: ffffc90002187308 RDI: ffffc90002188003
RBP: ffffc90002187288 R08: 00000000ffffef05 R09: fffffbfff0ee5efd
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000bf51e76c
R13: 00000000ffffef05 R14: 0000000000000cf0 R15: 00000000be71e9e6
FS: 00007fcf402806c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90002188000 CR3: 000000013d297000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bloom_map_peek_elem+0xac/0x1a0 kernel/bpf/bloom_filter.c:51
bpf_prog_00798911c748094f+0x3a/0x3e
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_run3+0x177/0x2e0 kernel/trace/bpf_trace.c:2315
__bpf_trace_ext4_discard_preallocations+0x2b/0x40 include/trace/events/ext4.h:767
trace_ext4_discard_preallocations include/trace/events/ext4.h:767 [inline]
ext4_discard_preallocations+0xe8e/0xef0 fs/ext4/mballoc.c:5015
ext4_truncate+0x8e4/0xfb0 fs/ext4/inode.c:4276
ext4_setattr+0x1107/0x1a50 fs/ext4/inode.c:5586
notify_change+0xd53/0x1010 fs/attr.c:499
do_truncate+0x21c/0x300 fs/open.c:66
handle_truncate fs/namei.c:3292 [inline]
do_open fs/namei.c:3637 [inline]
path_openat+0x2726/0x2d60 fs/namei.c:3790
do_filp_open+0x230/0x480 fs/namei.c:3817
do_sys_openat2+0x13f/0x850 fs/open.c:1341
do_sys_open fs/open.c:1357 [inline]
__do_sys_openat fs/open.c:1373 [inline]
__se_sys_openat fs/open.c:1368 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1368
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: 0033:0x7fcf3f47dea9
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:00007fcf402800c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fcf3f5abf80 RCX: 00007fcf3f47dea9
RDX: 000000000000275a RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007fcf3f4ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fcf3f5abf80 R15: 00007fff5ea9d468
Modules linked in:
CR2: ffffc90002188000
---[ 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:ffffc90000d979a8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 000000009ff5fef1 RCX: ffffffff8191c5b5
RDX: dffffc0000000000 RSI: ffffc90000d97a68 RDI: ffffc90000d98003
RBP: ffffc90000d979e8 R08: 00000000fffff661 R09: fffffbfff0e9e0de
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000007a8535a5
R13: 00000000fffff661 R14: 0000000000000594 R15: 0000000028f47967
FS: 00007fcf402806c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90002188000 CR3: 000000013d297000 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 56 01 00 00 jne 0x168
12: 4a 8d 7c 36 0b lea 0xb(%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 6e 01 00 00 jne 0x198
* 2a: 46 03 64 36 08 add 0x8(%rsi,%r14,1),%r12d <-- trapping instruction
2f: 45 29 e7 sub %r12d,%r15d
32: 44 89 e0 mov %r12d,%eax
35: c1 c0 04 rol $0x4,%eax
38: 44 31 f8 xor %r15d,%eax
3b: 41 01 dc add %ebx,%r12d
3e: 89 c1 mov %eax,%ecx