================================================================== 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 ffffc90001ad7360 by task syz-executor.1/2869 CPU: 1 PID: 2869 Comm: syz-executor.1 Not tainted 6.1.78-syzkaller-00140-g9fcc2459efcd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 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_ext4_da_release_space+0x23/0x30 include/trace/events/ext4.h:1273 trace_ext4_da_release_space include/trace/events/ext4.h:1273 [inline] ext4_da_release_space+0x423/0x480 fs/ext4/inode.c:1526 ext4_es_remove_extent+0x297/0x460 fs/ext4/extents_status.c:1541 ext4_ext_truncate+0x154/0x320 fs/ext4/extents.c:4408 ext4_truncate+0x96c/0xfb0 fs/ext4/inode.c:4279 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:3286 [inline] do_open fs/namei.c:3631 [inline] path_openat+0x2726/0x2d60 fs/namei.c:3784 do_filp_open+0x230/0x480 fs/namei.c:3811 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: 0033:0x7f2cbd07cee9 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:00007f2cbde660c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f2cbd1b3f80 RCX: 00007f2cbd07cee9 RDX: 0000000000007a05 RSI: 0000000020000140 RDI: ffffffffffffff9c RBP: 00007f2cbd0da6fe R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001700 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f2cbd1b3f80 R15: 00007ffd4a53b778 The buggy address belongs to stack of task syz-executor.1/2869 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 [ffffc90001ad0000, ffffc90001ad9000) created by: copy_process+0x5c3/0x3530 kernel/fork.c:2199 The buggy address belongs to the physical page: page:ffffea000684d680 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a135a 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 2867, tgid 2867 (syz-executor.1), ts 890775112810, free_ts 890672710339 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 get_signal+0x169d/0x1820 kernel/signal.c:2880 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:168 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:297 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87 Memory state around the buggy address: ffffc90001ad7200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90001ad7280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90001ad7300: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 ^ ffffc90001ad7380: 00 00 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90001ad7400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== BUG: unable to handle page fault for address: ffffc90001ad8000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 100000067 P4D 100000067 PUD 100154067 PMD 1286d5067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 2869 Comm: syz-executor.1 Tainted: G B 6.1.78-syzkaller-00140-g9fcc2459efcd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 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:ffffc90001ad7268 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 000000000b8d86b0 RCX: ffffffff8191dbe5 RDX: dffffc0000000000 RSI: ffffc90001ad7328 RDI: ffffc90001ad8003 RBP: ffffc90001ad72a8 R08: 00000000fffff2dd R09: fffffbfff0f260fd R10: 0000000000000000 R11: dffffc0000000001 R12: 000000007f5457aa R13: 00000000fffff2dd R14: 0000000000000cd8 R15: 000000008d3bb5f9 FS: 00007f2cbde666c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffdfa50000 CR3: 000000012e347000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ---------------- 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