================================================================== 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 ffffc90000d07840 by task syz-executor.0/22870 CPU: 1 PID: 22870 Comm: syz-executor.0 Not tainted 6.1.75-syzkaller-00074-g4744b3a4ed72 #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_216c997a1f42e404+0x37/0x3b 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_run2+0x133/0x290 kernel/trace/bpf_trace.c:2314 __bpf_trace_skb_copy_datagram_iovec+0x23/0x30 include/trace/events/skb.h:71 trace_skb_copy_datagram_iovec include/trace/events/skb.h:71 [inline] skb_copy_datagram_iter+0x11a/0x180 net/core/datagram.c:526 skb_copy_datagram_msg include/linux/skbuff.h:3931 [inline] __unix_dgram_recvmsg+0x7f9/0x12b0 net/unix/af_unix.c:2489 unix_dgram_recvmsg net/unix/af_unix.c:2547 [inline] unix_seqpacket_recvmsg+0xef/0x120 net/unix/af_unix.c:2416 ____sys_recvmsg+0x285/0x530 ___sys_recvmsg net/socket.c:2765 [inline] __sys_recvmsg+0x2e9/0x3d0 net/socket.c:2795 __do_sys_recvmsg net/socket.c:2805 [inline] __se_sys_recvmsg net/socket.c:2802 [inline] __x64_sys_recvmsg+0x7f/0x90 net/socket.c:2802 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: 0033:0x7ffa4767dea9 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:00007ffa4842a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007ffa477abf80 RCX: 00007ffa4767dea9 RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000008 RBP: 00007ffa476ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffa477abf80 R15: 00007ffccb00ac78 The buggy address belongs to stack of task syz-executor.0/22870 and is located at offset 0 in frame: bpf_trace_run2+0x0/0x290 This frame has 1 object: [32, 48) 'args' The buggy address belongs to the virtual mapping at [ffffc90000d00000, ffffc90000d09000) created by: copy_process+0x5c3/0x3530 kernel/fork.c:2199 The buggy address belongs to the physical page: page:ffffea0005e9ea00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17a7a8 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 22844, tgid 22844 (syz-executor.0), ts 359887338206, free_ts 359838601660 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: ffffc90000d07700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90000d07780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90000d07800: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f3 f3 ^ ffffc90000d07880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90000d07900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== BUG: unable to handle page fault for address: ffffc90000d08000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 100000067 P4D 100000067 PUD 100154067 PMD 11a827067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 22870 Comm: syz-executor.0 Tainted: G B 6.1.75-syzkaller-00074-g4744b3a4ed72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:jhash include/linux/jhash.h:80 [inline] RIP: 0010:hash+0x2a4/0xc20 kernel/bpf/bloom_filter.c:39 Code: 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 ff 00 00 00 4a 8d 7c 36 03 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 17 01 00 00 <46> 03 3c 36 4a 8d 7c 36 04 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 RSP: 0018:ffffc90000d07750 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000053a2107c RCX: ffffffff8191d585 RDX: dffffc0000000000 RSI: ffffc90000d07808 RDI: ffffc90000d08003 RBP: ffffc90000d07790 R08: 00000000fffff7f7 R09: fffffbfff0ee5efd R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000004db942b R13: 00000000fffff7f7 R14: 00000000000007f8 R15: 000000008d11a229 FS: 00007ffa4842a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000d08000 CR3: 000000011bcc5000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: bloom_map_push_elem+0xce/0x180 kernel/bpf/bloom_filter.c:69 bpf_prog_216c997a1f42e404+0x37/0x3b 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_run2+0x133/0x290 kernel/trace/bpf_trace.c:2314 __bpf_trace_skb_copy_datagram_iovec+0x23/0x30 include/trace/events/skb.h:71 trace_skb_copy_datagram_iovec include/trace/events/skb.h:71 [inline] skb_copy_datagram_iter+0x11a/0x180 net/core/datagram.c:526 skb_copy_datagram_msg include/linux/skbuff.h:3931 [inline] __unix_dgram_recvmsg+0x7f9/0x12b0 net/unix/af_unix.c:2489 unix_dgram_recvmsg net/unix/af_unix.c:2547 [inline] unix_seqpacket_recvmsg+0xef/0x120 net/unix/af_unix.c:2416 ____sys_recvmsg+0x285/0x530 ___sys_recvmsg net/socket.c:2765 [inline] __sys_recvmsg+0x2e9/0x3d0 net/socket.c:2795 __do_sys_recvmsg net/socket.c:2805 [inline] __se_sys_recvmsg net/socket.c:2802 [inline] __x64_sys_recvmsg+0x7f/0x90 net/socket.c:2802 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: 0033:0x7ffa4767dea9 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:00007ffa4842a0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007ffa477abf80 RCX: 00007ffa4767dea9 RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000008 RBP: 00007ffa476ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffa477abf80 R15: 00007ffccb00ac78 Modules linked in: CR2: ffffc90000d08000 ---[ end trace 0000000000000000 ]--- RIP: 0010:jhash include/linux/jhash.h:80 [inline] RIP: 0010:hash+0x2a4/0xc20 kernel/bpf/bloom_filter.c:39 Code: 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 ff 00 00 00 4a 8d 7c 36 03 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 17 01 00 00 <46> 03 3c 36 4a 8d 7c 36 04 48 89 f8 48 c1 e8 03 0f b6 04 10 84 c0 RSP: 0018:ffffc90000d07750 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000053a2107c RCX: ffffffff8191d585 RDX: dffffc0000000000 RSI: ffffc90000d07808 RDI: ffffc90000d08003 RBP: ffffc90000d07790 R08: 00000000fffff7f7 R09: fffffbfff0ee5efd R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000004db942b R13: 00000000fffff7f7 R14: 00000000000007f8 R15: 000000008d11a229 FS: 00007ffa4842a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000d08000 CR3: 000000011bcc5000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess), 5 bytes skipped: 0: df 0f fisttps (%rdi) 2: b6 04 mov $0x4,%dh 4: 10 84 c0 0f 85 ff 00 adc %al,0xff850f(%rax,%rax,8) b: 00 00 add %al,(%rax) d: 4a 8d 7c 36 03 lea 0x3(%rsi,%r14,1),%rdi 12: 48 89 f8 mov %rdi,%rax 15: 48 c1 e8 03 shr $0x3,%rax 19: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax 1d: 84 c0 test %al,%al 1f: 0f 85 17 01 00 00 jne 0x13c * 25: 46 03 3c 36 add (%rsi,%r14,1),%r15d <-- trapping instruction 29: 4a 8d 7c 36 04 lea 0x4(%rsi,%r14,1),%rdi 2e: 48 89 f8 mov %rdi,%rax 31: 48 c1 e8 03 shr $0x3,%rax 35: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax 39: 84 c0 test %al,%al