================================================================== BUG: KASAN: invalid-access in __xfrm_state_lookup_all net/xfrm/xfrm_state.c:1142 [inline] BUG: KASAN: invalid-access in xfrm_state_find+0x328/0x16a0 net/xfrm/xfrm_state.c:1494 Read at addr f1f000000aa91308 by task syz.1.6199/22009 Pointer tag: [f1], memory tag: [fe] CPU: 1 UID: 0 PID: 22009 Comm: syz.1.6199 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x78/0x90 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x108/0x61c mm/kasan/report.c:482 kasan_report+0x88/0xac mm/kasan/report.c:595 report_tag_fault arch/arm64/mm/fault.c:326 [inline] do_tag_recovery arch/arm64/mm/fault.c:338 [inline] __do_kernel_fault+0x170/0x1c8 arch/arm64/mm/fault.c:380 do_bad_area+0x68/0x78 arch/arm64/mm/fault.c:480 do_tag_check_fault+0x34/0x44 arch/arm64/mm/fault.c:853 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:929 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:481 el1h_64_sync_handler+0x50/0xac arch/arm64/kernel/entry-common.c:597 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:591 __xfrm_state_lookup_all net/xfrm/xfrm_state.c:1142 [inline] (P) xfrm_state_find+0x328/0x16a0 net/xfrm/xfrm_state.c:1494 (P) xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:2522 [inline] xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:2573 [inline] xfrm_resolve_and_create_bundle+0x1b8/0x1014 net/xfrm/xfrm_policy.c:2871 xfrm_bundle_lookup net/xfrm/xfrm_policy.c:3106 [inline] xfrm_lookup_with_ifid+0x1ac/0xba0 net/xfrm/xfrm_policy.c:3237 xfrm_lookup net/xfrm/xfrm_policy.c:3336 [inline] xfrm_lookup_route+0x28/0xb8 net/xfrm/xfrm_policy.c:3347 ip_route_output_flow+0xd4/0xe0 net/ipv4/route.c:2934 raw_sendmsg+0x250/0xc5c net/ipv4/raw.c:628 inet_sendmsg+0x44/0x70 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x54/0x60 net/socket.c:729 __sys_sendto+0x118/0x180 net/socket.c:2228 __do_sys_sendto net/socket.c:2235 [inline] __se_sys_sendto net/socket.c:2231 [inline] __arm64_sys_sendto+0x28/0x38 net/socket.c:2231 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151 el0_svc+0x34/0x10c arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596 The buggy address belongs to the object at fff000000aa91040 which belongs to the cache xfrm_state of size 824 The buggy address is located 712 bytes inside of 824-byte region [fff000000aa91040, fff000000aa91378) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xf9f000000aa90000 pfn:0x4aa90 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x1ffc00000000040(head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0x0) page_type: f5(slab) raw: 01ffc00000000040 f6f000000334f300 dead000000000122 0000000000000000 raw: f9f000000aa90000 0000000080130012 00000000f5000000 0000000000000000 head: 01ffc00000000040 f6f000000334f300 dead000000000122 0000000000000000 head: f9f000000aa90000 0000000080130012 00000000f5000000 0000000000000000 head: 01ffc00000000002 ffffc1ffc02aa401 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 page dumped because: kasan: bad access detected Memory state around the buggy address: fff000000aa91100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fff000000aa91200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe >fff000000aa91300: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ^ fff000000aa91400: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fff000000aa91500: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ==================================================================