================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0x2f/0x120 lib/list_debug.c:46 Read of size 8 at addr ffff8881266aab08 by task kworker/1:7/1091 CPU: 1 PID: 1091 Comm: kworker/1:7 Not tainted 5.15.167-syzkaller-android13-5.15.167_r00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events binder_deferred_func Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106 print_address_description+0x87/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:444 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 __list_del_entry_valid+0x2f/0x120 lib/list_debug.c:46 __list_del_entry include/linux/list.h:132 [inline] list_del_init include/linux/list.h:204 [inline] binder_dequeue_work_head_ilocked drivers/android/binder.c:515 [inline] binder_release_work+0xcd/0x680 drivers/android/binder.c:5183 binder_deferred_release drivers/android/binder.c:6339 [inline] binder_deferred_func+0x1847/0x1bc0 drivers/android/binder.c:6374 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 8346: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] kmem_cache_alloc_trace+0x115/0x210 mm/slub.c:3267 kmalloc include/linux/slab.h:603 [inline] kzalloc include/linux/slab.h:733 [inline] binder_request_freeze_notification drivers/android/binder.c:3895 [inline] binder_thread_write+0x9f5/0x6ec0 drivers/android/binder.c:4535 binder_ioctl_write_read+0x205/0x7300 drivers/android/binder.c:5470 binder_ioctl+0x371/0x2640 drivers/android/binder.c:5787 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0x114/0x190 fs/ioctl.c:860 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 1091: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749 slab_free mm/slub.c:3519 [inline] kfree+0xc8/0x220 mm/slub.c:4579 binder_free_ref+0x128/0x260 drivers/android/binder.c:1465 binder_deferred_release drivers/android/binder.c:6334 [inline] binder_deferred_func+0x171c/0x1bc0 drivers/android/binder.c:6374 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu_common kernel/rcu/tree.c:3007 [inline] call_rcu+0x123/0x10b0 kernel/rcu/tree.c:3125 tnode_free net/ipv4/fib_trie.c:495 [inline] replace+0x19b/0x4b0 net/ipv4/fib_trie.c:521 inflate net/ipv4/fib_trie.c:623 [inline] resize+0xbaf/0x1d60 net/ipv4/fib_trie.c:868 trie_rebalance net/ipv4/fib_trie.c:1101 [inline] fib_insert_node net/ipv4/fib_trie.c:1145 [inline] fib_insert_alias+0xb20/0x1060 net/ipv4/fib_trie.c:1159 fib_table_insert+0xa2c/0x20c0 net/ipv4/fib_trie.c:1372 fib_magic net/ipv4/fib_frontend.c:1093 [inline] fib_add_ifaddr+0xe49/0x15e0 net/ipv4/fib_frontend.c:1137 fib_inetaddr_event+0x159/0x310 net/ipv4/fib_frontend.c:1429 notifier_call_chain kernel/notifier.c:83 [inline] blocking_notifier_call_chain+0xbb/0x140 kernel/notifier.c:318 __inet_insert_ifa+0x906/0xb50 net/ipv4/devinet.c:554 inet_insert_ifa net/ipv4/devinet.c:561 [inline] inetdev_event+0xc39/0x10a0 net/ipv4/devinet.c:1571 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:391 __dev_notify_flags+0x304/0x610 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8896 do_setlink+0xc21/0x3d80 net/core/rtnetlink.c:2747 __rtnl_newlink net/core/rtnetlink.c:3418 [inline] rtnl_newlink+0x17bc/0x2050 net/core/rtnetlink.c:3540 rtnetlink_rcv_msg+0x951/0xc40 net/core/rtnetlink.c:5618 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2507 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5636 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0xa0a/0xd20 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] __sys_sendto+0x564/0x720 net/socket.c:2058 __do_sys_sendto net/socket.c:2070 [inline] __se_sys_sendto net/socket.c:2066 [inline] __x64_sys_sendto+0xe5/0x100 net/socket.c:2066 x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu_common kernel/rcu/tree.c:3007 [inline] call_rcu+0x123/0x10b0 kernel/rcu/tree.c:3125 tnode_free net/ipv4/fib_trie.c:495 [inline] replace+0x19b/0x4b0 net/ipv4/fib_trie.c:521 inflate net/ipv4/fib_trie.c:623 [inline] resize+0xbaf/0x1d60 net/ipv4/fib_trie.c:868 replace+0x352/0x4b0 net/ipv4/fib_trie.c:529 inflate net/ipv4/fib_trie.c:623 [inline] resize+0xbaf/0x1d60 net/ipv4/fib_trie.c:868 trie_rebalance net/ipv4/fib_trie.c:1101 [inline] fib_insert_node net/ipv4/fib_trie.c:1145 [inline] fib_insert_alias+0xb20/0x1060 net/ipv4/fib_trie.c:1159 fib_table_insert+0xa2c/0x20c0 net/ipv4/fib_trie.c:1372 fib_magic net/ipv4/fib_frontend.c:1093 [inline] fib_add_ifaddr+0x43f/0x15e0 net/ipv4/fib_frontend.c:1115 fib_inetaddr_event+0x159/0x310 net/ipv4/fib_frontend.c:1429 notifier_call_chain kernel/notifier.c:83 [inline] blocking_notifier_call_chain+0xbb/0x140 kernel/notifier.c:318 __inet_insert_ifa+0x906/0xb50 net/ipv4/devinet.c:554 inet_rtm_newaddr+0x8fd/0x16e0 net/ipv4/devinet.c:957 rtnetlink_rcv_msg+0x951/0xc40 net/core/rtnetlink.c:5618 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2507 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5636 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0xa0a/0xd20 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] __sys_sendto+0x564/0x720 net/socket.c:2058 __do_sys_sendto net/socket.c:2070 [inline] __se_sys_sendto net/socket.c:2066 [inline] __x64_sys_sendto+0xe5/0x100 net/socket.c:2066 x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff8881266aab00 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 8 bytes inside of 64-byte region [ffff8881266aab00, ffff8881266aab40) The buggy address belongs to the page: page:ffffea000499aa80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1266aa flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 ffffea0004478c80 0000000800000008 ffff888100042780 raw: 0000000000000000 0000000080200020 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 290, ts 21858994528, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5779 allocate_slab mm/slub.c:1932 [inline] new_slab+0x9a/0x4e0 mm/slub.c:1995 ___slab_alloc+0x39e/0x830 mm/slub.c:3028 __slab_alloc+0x4a/0x90 mm/slub.c:3115 slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3248 [inline] __kmalloc+0x16d/0x270 mm/slub.c:4423 kmalloc include/linux/slab.h:608 [inline] kzalloc include/linux/slab.h:733 [inline] kobject_get_path+0xbc/0x1f0 lib/kobject.c:184 kobject_uevent_env+0x27f/0x700 lib/kobject_uevent.c:544 kobject_uevent+0x1f/0x30 lib/kobject_uevent.c:657 rx_queue_add_kobject net/core/net-sysfs.c:1070 [inline] net_rx_queue_update_kobjects+0x213/0x490 net/core/net-sysfs.c:1110 register_queue_kobjects net/core/net-sysfs.c:1767 [inline] netdev_register_kobject+0x231/0x320 net/core/net-sysfs.c:2018 register_netdevice+0xde9/0x1390 net/core/dev.c:10364 register_vlan_dev+0x280/0x5e0 net/8021q/vlan.c:179 vlan_newlink+0x468/0x620 net/8021q/vlan_netlink.c:192 page_owner free stack trace missing Memory state around the buggy address: ffff8881266aaa00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffff8881266aaa80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8881266aab00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff8881266aab80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881266aac00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ================================================================== general protection fault, probably for non-canonical address 0xfba3fc7120000088: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xdd20038900000440-0xdd20038900000447] CPU: 1 PID: 1091 Comm: kworker/1:7 Tainted: G B 5.15.167-syzkaller-android13-5.15.167_r00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events binder_deferred_func RIP: 0010:__list_del_entry_valid+0x75/0x120 lib/list_debug.c:59 Code: 1e 48 85 db 74 68 4d 85 ff 74 74 48 ba 00 01 00 00 00 00 ad de 48 39 d3 74 76 48 83 c2 22 49 39 d7 74 7e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 cc 90 48 ff 49 8b 17 4c 39 f2 75 RSP: 0018:ffffc90000c37c00 EFLAGS: 00010a06 RAX: 1ba4007120000088 RBX: ffff88810af1b500 RCX: ffffffff826a1859 RDX: dead000000000122 RSI: 0000000000000282 RDI: ffff8881266aab00 RBP: ffffc90000c37c20 R08: ffffffff8141997b R09: 0000000000000003 R10: fffffbfff0e9a04c R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881266aab00 R14: ffff8881266aab00 R15: dd20038900000443 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001181b9000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000000cdb2 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:132 [inline] list_del_init include/linux/list.h:204 [inline] binder_dequeue_work_head_ilocked drivers/android/binder.c:515 [inline] binder_release_work+0xcd/0x680 drivers/android/binder.c:5183 binder_deferred_release drivers/android/binder.c:6339 [inline] binder_deferred_func+0x1847/0x1bc0 drivers/android/binder.c:6374 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace f4a85339b69803a8 ]--- RIP: 0010:__list_del_entry_valid+0x75/0x120 lib/list_debug.c:59 Code: 1e 48 85 db 74 68 4d 85 ff 74 74 48 ba 00 01 00 00 00 00 ad de 48 39 d3 74 76 48 83 c2 22 49 39 d7 74 7e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 cc 90 48 ff 49 8b 17 4c 39 f2 75 RSP: 0018:ffffc90000c37c00 EFLAGS: 00010a06 RAX: 1ba4007120000088 RBX: ffff88810af1b500 RCX: ffffffff826a1859 RDX: dead000000000122 RSI: 0000000000000282 RDI: ffff8881266aab00 RBP: ffffc90000c37c20 R08: ffffffff8141997b R09: 0000000000000003 R10: fffffbfff0e9a04c R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881266aab00 R14: ffff8881266aab00 R15: dd20038900000443 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000006a0f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000000000000cdb2 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 85 db test %rbx,%rbx 3: 74 68 je 0x6d 5: 4d 85 ff test %r15,%r15 8: 74 74 je 0x7e a: 48 ba 00 01 00 00 00 movabs $0xdead000000000100,%rdx 11: 00 ad de 14: 48 39 d3 cmp %rdx,%rbx 17: 74 76 je 0x8f 19: 48 83 c2 22 add $0x22,%rdx 1d: 49 39 d7 cmp %rdx,%r15 20: 74 7e je 0xa0 22: 4c 89 f8 mov %r15,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 ff mov %r15,%rdi 33: e8 cc 90 48 ff call 0xff489104 38: 49 8b 17 mov (%r15),%rdx 3b: 4c 39 f2 cmp %r14,%rdx 3e: 75 .byte 0x75