================================================================== 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 ffffc9000133f500 by task syz-executor.1/11156 CPU: 1 PID: 11156 Comm: syz-executor.1 Not tainted 6.1.75-syzkaller-00066-gd0c6724b0f6f #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_run2+0x133/0x290 kernel/trace/bpf_trace.c:2314 __bpf_trace_jbd2_checkpoint+0x23/0x30 include/trace/events/jbd2.h:14 __traceiter_jbd2_checkpoint+0x75/0xc0 include/trace/events/jbd2.h:14 trace_jbd2_checkpoint include/trace/events/jbd2.h:14 [inline] jbd2_log_do_checkpoint+0x10c7/0x1140 fs/jbd2/checkpoint.c:176 jbd2_journal_flush+0x29c/0xc30 fs/jbd2/journal.c:2469 ext4_ioctl_checkpoint fs/ext4/ioctl.c:1086 [inline] __ext4_ioctl fs/ext4/ioctl.c:1594 [inline] ext4_ioctl+0x373c/0x5900 fs/ext4/ioctl.c:1614 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 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: 0033:0x7f79b007dea9 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:00007f79b0d290c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f79b01abf80 RCX: 00007f79b007dea9 RDX: 00000000200005c0 RSI: 000000004004662b RDI: 000000000000000a RBP: 00007f79b00ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f79b01abf80 R15: 00007ffefcce2878 The buggy address belongs to stack of task syz-executor.1/11156 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 [ffffc90001338000, ffffc90001341000) created by: copy_process+0x5c3/0x3530 kernel/fork.c:2199 The buggy address belongs to the physical page: page:ffffea000451f280 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1147ca 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 11146, tgid 11146 (syz-executor.3), ts 200278933899, free_ts 200152967411 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 bpf_ringbuf_free kernel/bpf/ringbuf.c:226 [inline] ringbuf_map_free+0xbe/0x120 kernel/bpf/ringbuf.c:235 bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:622 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: ffffc9000133f400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000133f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc9000133f500: f1 f1 f1 f1 00 00 f3 f3 00 00 00 00 00 00 00 00 ^ ffffc9000133f580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000133f600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== BUG: unable to handle page fault for address: ffffc90001340000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 100000067 P4D 100000067 PUD 100154067 PMD 120067067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 11156 Comm: syz-executor.1 Tainted: G B 6.1.75-syzkaller-00066-gd0c6724b0f6f #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:ffffc9000133f410 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 00000000909bf48d RCX: ffffffff8191d5e5 RDX: dffffc0000000000 RSI: ffffc9000133f4c8 RDI: ffffc90001340003 RBP: ffffc9000133f450 R08: 00000000fffff4be R09: fffffbfff0ee5efd R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000b0097db R13: 00000000fffff4be R14: 0000000000000b34 R15: 00000000515a820e FS: 00007f79b0d296c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001340000 CR3: 0000000125a86000 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_run2+0x133/0x290 kernel/trace/bpf_trace.c:2314 __bpf_trace_jbd2_checkpoint+0x23/0x30 include/trace/events/jbd2.h:14 __traceiter_jbd2_checkpoint+0x75/0xc0 include/trace/events/jbd2.h:14 trace_jbd2_checkpoint include/trace/events/jbd2.h:14 [inline] jbd2_log_do_checkpoint+0x10c7/0x1140 fs/jbd2/checkpoint.c:176 jbd2_journal_flush+0x29c/0xc30 fs/jbd2/journal.c:2469 ext4_ioctl_checkpoint fs/ext4/ioctl.c:1086 [inline] __ext4_ioctl fs/ext4/ioctl.c:1594 [inline] ext4_ioctl+0x373c/0x5900 fs/ext4/ioctl.c:1614 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 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: 0033:0x7f79b007dea9 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:00007f79b0d290c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f79b01abf80 RCX: 00007f79b007dea9 RDX: 00000000200005c0 RSI: 000000004004662b RDI: 000000000000000a RBP: 00007f79b00ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f79b01abf80 R15: 00007ffefcce2878 Modules linked in: CR2: ffffc90001340000 ---[ 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:ffffc9000133f410 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 00000000909bf48d RCX: ffffffff8191d5e5 RDX: dffffc0000000000 RSI: ffffc9000133f4c8 RDI: ffffc90001340003 RBP: ffffc9000133f450 R08: 00000000fffff4be R09: fffffbfff0ee5efd R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000b0097db R13: 00000000fffff4be R14: 0000000000000b34 R15: 00000000515a820e FS: 00007f79b0d296c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90001340000 CR3: 0000000125a86000 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