================================================================== 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 ffffc9000447f800 by task syz-executor.0/29645 CPU: 1 PID: 29645 Comm: syz-executor.0 Tainted: G W 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_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_run2+0x133/0x290 kernel/trace/bpf_trace.c:2314 __bpf_trace_task_rename+0x25/0x30 include/trace/events/task.h:34 __traceiter_task_rename+0x77/0xd0 include/trace/events/task.h:34 trace_task_rename include/trace/events/task.h:34 [inline] __set_task_comm+0x131/0x190 fs/exec.c:1238 set_task_comm include/linux/sched.h:2013 [inline] __kthread_create_on_node+0x440/0x550 kernel/kthread.c:484 kthread_create_on_node+0xda/0x120 kernel/kthread.c:522 __cpu_map_entry_alloc kernel/bpf/cpumap.c:476 [inline] cpu_map_update_elem+0xa3f/0xf50 kernel/bpf/cpumap.c:600 bpf_map_update_value+0x1a3/0x410 kernel/bpf/syscall.c:190 map_update_elem+0x500/0x680 kernel/bpf/syscall.c:1428 __sys_bpf+0x460/0x7f0 kernel/bpf/syscall.c:4969 __do_sys_bpf kernel/bpf/syscall.c:5085 [inline] __se_sys_bpf kernel/bpf/syscall.c:5083 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5083 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: 0033:0x7f7c95a7dd69 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:00007f7c9682c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f7c95babf80 RCX: 00007f7c95a7dd69 RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 RBP: 00007f7c95aca49e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7c95babf80 R15: 00007fffcf5675d8 The buggy address belongs to stack of task syz-executor.0/29645 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 [ffffc90004478000, ffffc90004481000) created by: copy_process+0x5c3/0x3530 kernel/fork.c:2199 The buggy address belongs to the physical page: page:ffffea0005c22280 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17088a 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 29640, tgid 29640 (syz-executor.0), ts 595988582041, free_ts 595973771008 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_list+0xf1/0x7b0 mm/page_alloc.c:3646 release_pages+0xf7f/0xfe0 mm/swap.c:1063 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:314 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu mm/mmu_gather.c:261 [inline] tlb_finish_mmu+0x1e0/0x3f0 mm/mmu_gather.c:361 exit_mmap+0x421/0x940 mm/mmap.c:3348 __mmput+0x95/0x310 kernel/fork.c:1298 mmput+0x56/0x170 kernel/fork.c:1321 exit_mm kernel/exit.c:566 [inline] do_exit+0xb29/0x2b80 kernel/exit.c:862 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 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 Memory state around the buggy address: ffffc9000447f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000447f780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc9000447f800: f1 f1 f1 f1 00 00 f3 f3 00 00 00 00 00 00 00 00 ^ ffffc9000447f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000447f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== BUG: unable to handle page fault for address: ffffc90004480000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 100000067 P4D 100000067 PUD 100154067 PMD 127cc3067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 29645 Comm: syz-executor.0 Tainted: G B W 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:ffffc9000447f708 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000025f58995 RCX: ffffffff8191d7a5 RDX: dffffc0000000000 RSI: ffffc9000447f7c8 RDI: ffffc90004480003 RBP: ffffc9000447f748 R08: 00000000fffff7bf R09: fffffbfff0f260fd R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000d7152554 R13: 00000000fffff7bf R14: 0000000000000834 R15: 00000000de824996 FS: 00007f7c9682c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004480000 CR3: 000000014fd69000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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_run2+0x133/0x290 kernel/trace/bpf_trace.c:2314 __bpf_trace_task_rename+0x25/0x30 include/trace/events/task.h:34 __traceiter_task_rename+0x77/0xd0 include/trace/events/task.h:34 trace_task_rename include/trace/events/task.h:34 [inline] __set_task_comm+0x131/0x190 fs/exec.c:1238 set_task_comm include/linux/sched.h:2013 [inline] __kthread_create_on_node+0x440/0x550 kernel/kthread.c:484 kthread_create_on_node+0xda/0x120 kernel/kthread.c:522 __cpu_map_entry_alloc kernel/bpf/cpumap.c:476 [inline] cpu_map_update_elem+0xa3f/0xf50 kernel/bpf/cpumap.c:600 bpf_map_update_value+0x1a3/0x410 kernel/bpf/syscall.c:190 map_update_elem+0x500/0x680 kernel/bpf/syscall.c:1428 __sys_bpf+0x460/0x7f0 kernel/bpf/syscall.c:4969 __do_sys_bpf kernel/bpf/syscall.c:5085 [inline] __se_sys_bpf kernel/bpf/syscall.c:5083 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5083 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: 0033:0x7f7c95a7dd69 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:00007f7c9682c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f7c95babf80 RCX: 00007f7c95a7dd69 RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 RBP: 00007f7c95aca49e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7c95babf80 R15: 00007fffcf5675d8 Modules linked in: CR2: ffffc90004480000 ---[ 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:ffffc9000447f708 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000025f58995 RCX: ffffffff8191d7a5 RDX: dffffc0000000000 RSI: ffffc9000447f7c8 RDI: ffffc90004480003 RBP: ffffc9000447f748 R08: 00000000fffff7bf R09: fffffbfff0f260fd R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000d7152554 R13: 00000000fffff7bf R14: 0000000000000834 R15: 00000000de824996 FS: 00007f7c9682c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004480000 CR3: 000000014fd69000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- 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