================================================================== 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 ffffc90000dff880 by task syz.2.1815/6937 CPU: 1 PID: 6937 Comm: syz.2.1815 Tainted: G W 6.1.84-syzkaller-00013-g6d6afa9d3f8f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run1+0x106/0x240 kernel/trace/bpf_trace.c:2311 __bpf_trace_qdisc_destroy+0x1d/0x30 include/trace/events/qdisc.h:102 __traceiter_qdisc_destroy+0x68/0xb0 include/trace/events/qdisc.h:102 trace_qdisc_destroy include/trace/events/qdisc.h:102 [inline] __qdisc_destroy+0x23d/0x2a0 net/sched/sch_generic.c:1068 qdisc_put net/sched/sch_generic.c:1090 [inline] dev_shutdown+0x43b/0x560 net/sched/sch_generic.c:1478 unregister_netdevice_many+0xa1c/0x1740 net/core/dev.c:10879 unregister_netdevice_queue+0x2e6/0x350 net/core/dev.c:10819 unregister_netdevice include/linux/netdevice.h:3100 [inline] __tun_detach+0xd14/0x1510 drivers/net/tun.c:685 tun_detach drivers/net/tun.c:701 [inline] tun_chr_close+0x92/0x140 drivers/net/tun.c:3487 __fput+0x3ab/0x870 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x24d/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0dc5b75b59 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0dc68da048 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f0dc5d06038 RCX: 00007f0dc5b75b59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 RBP: 00007f0dc5be4e5d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0dc5d06038 R15: 00007ffe1861eb98 The buggy address belongs to stack of task syz.2.1815/6937 and is located at offset 0 in frame: bpf_trace_run1+0x0/0x240 This frame has 1 object: [32, 40) 'args' The buggy address belongs to the virtual mapping at [ffffc90000df8000, ffffc90000e01000) created by: copy_process+0x5c3/0x3530 kernel/fork.c:2199 The buggy address belongs to the physical page: page:ffffea0004b61700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d85c 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 6872, tgid 6872 (syz.0.1799), ts 206635825878, free_ts 199590498844 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:5714 __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:5803 __vunmap+0x9f3/0xb60 mm/vmalloc.c:2728 __vfree mm/vmalloc.c:2776 [inline] vfree+0x5c/0x80 mm/vmalloc.c:2807 kcov_put kernel/kcov.c:428 [inline] kcov_close+0x2b/0x50 kernel/kcov.c:524 __fput+0x3ab/0x870 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x24d/0x2e0 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xbd5/0x2b80 kernel/exit.c:875 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: ffffc90000dff780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90000dff800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90000dff880: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00 ^ ffffc90000dff900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90000dff980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== BUG: unable to handle page fault for address: ffffc90000e00000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 100000067 P4D 100000067 PUD 100154067 PMD 11debd067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6937 Comm: syz.2.1815 Tainted: G B W 6.1.84-syzkaller-00013-g6d6afa9d3f8f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:ffffc90000dff788 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 00000000a9a5a039 RCX: ffffffff8191f1a5 RDX: 0000000000000000 RSI: ffffc90000dff848 RDI: ffffc90000e00003 RBP: ffffc90000dff7c8 R08: 00000000fffff843 R09: fffffbfff0f264fd R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000bfbd1744 R13: 00000000fffff843 R14: 00000000000007b0 R15: 00000000adc8faf5 FS: 00007f0dc68da6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000e00000 CR3: 00000001296a6000 CR4: 00000000003506a0 DR0: 0000000020000300 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:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run1+0x106/0x240 kernel/trace/bpf_trace.c:2311 __bpf_trace_qdisc_destroy+0x1d/0x30 include/trace/events/qdisc.h:102 __traceiter_qdisc_destroy+0x68/0xb0 include/trace/events/qdisc.h:102 trace_qdisc_destroy include/trace/events/qdisc.h:102 [inline] __qdisc_destroy+0x23d/0x2a0 net/sched/sch_generic.c:1068 qdisc_put net/sched/sch_generic.c:1090 [inline] dev_shutdown+0x43b/0x560 net/sched/sch_generic.c:1478 unregister_netdevice_many+0xa1c/0x1740 net/core/dev.c:10879 unregister_netdevice_queue+0x2e6/0x350 net/core/dev.c:10819 unregister_netdevice include/linux/netdevice.h:3100 [inline] __tun_detach+0xd14/0x1510 drivers/net/tun.c:685 tun_detach drivers/net/tun.c:701 [inline] tun_chr_close+0x92/0x140 drivers/net/tun.c:3487 __fput+0x3ab/0x870 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x24d/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x94/0xa0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0dc5b75b59 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0dc68da048 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f0dc5d06038 RCX: 00007f0dc5b75b59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 RBP: 00007f0dc5be4e5d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0dc5d06038 R15: 00007ffe1861eb98 Modules linked in: CR2: ffffc90000e00000 ---[ end trace 0000000000000000 ]--- 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:ffffc90000dff788 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 00000000a9a5a039 RCX: ffffffff8191f1a5 RDX: 0000000000000000 RSI: ffffc90000dff848 RDI: ffffc90000e00003 RBP: ffffc90000dff7c8 R08: 00000000fffff843 R09: fffffbfff0f264fd R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000bfbd1744 R13: 00000000fffff843 R14: 00000000000007b0 R15: 00000000adc8faf5 FS: 00007f0dc68da6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000e00000 CR3: 00000001296a6000 CR4: 00000000003506a0 DR0: 0000000020000300 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