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[syzbot] [bpf?] [net?] KASAN: slab-use-after-free Read in sk_filter_trim_cap | 0 (1) | 2024/09/04 12:35 |
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[syzbot] [bpf?] [net?] KASAN: slab-use-after-free Read in sk_filter_trim_cap | 0 (1) | 2024/09/04 12:35 |
================================================================== BUG: KASAN: slab-use-after-free in sk_filter_trim_cap+0x270/0xa80 net/core/filter.c:156 Read of size 8 at addr ffff8881476ff178 by task syz.1.1205/10184 CPU: 1 UID: 0 PID: 10184 Comm: syz.1.1205 Not tainted 6.14.0-rc1-syzkaller-00092-g011b03359038 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 sk_filter_trim_cap+0x270/0xa80 net/core/filter.c:156 sk_filter include/linux/filter.h:1062 [inline] sock_queue_rcv_skb_reason+0x28/0xf0 net/core/sock.c:527 sock_queue_rcv_skb include/net/sock.h:2402 [inline] mgmt_cmd_status+0x28d/0x4d0 net/bluetooth/mgmt_util.c:156 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline] cmd_complete_rsp+0x114/0x180 net/bluetooth/mgmt.c:1478 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259 __mgmt_power_off+0x183/0x430 net/bluetooth/mgmt.c:9463 hci_dev_close_sync+0x6c4/0x11c0 net/bluetooth/hci_sync.c:5193 hci_dev_do_close net/bluetooth/hci_core.c:482 [inline] hci_dev_close+0x112/0x210 net/bluetooth/hci_core.c:507 sock_do_ioctl+0x158/0x460 net/socket.c:1194 sock_ioctl+0x626/0x8e0 net/socket.c:1313 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4ff498cde9 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:00007f4ff5838038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f4ff4ba5fa0 RCX: 00007f4ff498cde9 RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000006 RBP: 00007f4ff4a0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4ff4ba5fa0 R15: 00007fffe8945718 </TASK> Allocated by task 7365: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4294 [inline] __kmalloc_noprof+0x285/0x4c0 mm/slub.c:4306 kmalloc_noprof include/linux/slab.h:905 [inline] sk_prot_alloc+0xe0/0x210 net/core/sock.c:2181 sk_alloc+0x38/0x370 net/core/sock.c:2234 bt_sock_alloc+0x3c/0x340 net/bluetooth/af_bluetooth.c:148 hci_sock_create+0xa1/0x190 net/bluetooth/hci_sock.c:2202 bt_sock_create+0x161/0x230 net/bluetooth/af_bluetooth.c:132 __sock_create+0x4c0/0xa30 net/socket.c:1543 sock_create net/socket.c:1601 [inline] __sys_socket_create net/socket.c:1638 [inline] __sys_socket+0x150/0x3c0 net/socket.c:1685 __do_sys_socket net/socket.c:1699 [inline] __se_sys_socket net/socket.c:1697 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1697 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 10186: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4609 [inline] kfree+0x196/0x430 mm/slub.c:4757 sk_prot_free net/core/sock.c:2217 [inline] __sk_destruct+0x479/0x5f0 net/core/sock.c:2309 sock_put include/net/sock.h:1913 [inline] mgmt_pending_free net/bluetooth/mgmt_util.c:307 [inline] mgmt_pending_remove+0x13e/0x1a0 net/bluetooth/mgmt_util.c:315 mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259 mgmt_index_removed+0x133/0x390 net/bluetooth/mgmt.c:9396 hci_sock_bind+0xcce/0x1150 net/bluetooth/hci_sock.c:1307 __sys_bind_socket net/socket.c:1812 [inline] __sys_bind+0x1e4/0x290 net/socket.c:1843 __do_sys_bind net/socket.c:1848 [inline] __se_sys_bind net/socket.c:1846 [inline] __x64_sys_bind+0x7a/0x90 net/socket.c:1846 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8881476ff000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 376 bytes inside of freed 2048-byte region [ffff8881476ff000, ffff8881476ff800) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1476f8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 057ff00000000040 ffff88801ac42000 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 head: 057ff00000000040 ffff88801ac42000 0000000000000000 dead000000000001 head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 head: 057ff00000000003 ffffea00051dbe01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 6107539473, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1551 prep_new_page mm/page_alloc.c:1559 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3477 __alloc_frozen_pages_noprof+0x292/0x710 mm/page_alloc.c:4739 alloc_pages_mpol+0x311/0x660 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2587 new_slab mm/slub.c:2640 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3826 __slab_alloc+0x58/0xa0 mm/slub.c:3916 __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] __kmalloc_cache_noprof+0x27b/0x390 mm/slub.c:4320 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] device_create_groups_vargs drivers/base/core.c:4329 [inline] device_create_with_groups+0x121/0x2e0 drivers/base/core.c:4427 misc_register+0x3ea/0x670 drivers/char/misc.c:264 fuse_dev_init+0xa9/0x130 fs/fuse/dev.c:2517 fuse_init+0x5a/0x160 fs/fuse/inode.c:2184 do_one_initcall+0x248/0x870 init/main.c:1257 do_initcall_level+0x157/0x210 init/main.c:1319 do_initcalls+0x3f/0x80 init/main.c:1335 kernel_init_freeable+0x435/0x5d0 init/main.c:1568 page_owner free stack trace missing Memory state around the buggy address: ffff8881476ff000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881476ff080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881476ff100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881476ff180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881476ff200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/02/09 01:27 | net | 011b03359038 | ef44b750 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: slab-use-after-free Read in sk_filter_trim_cap | ||
2025/02/07 06:41 | net | 2a64c96356c8 | 53657d1b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: slab-use-after-free Read in sk_filter_trim_cap | ||
2025/01/21 06:58 | net | d640627663bf | 6e87cfa2 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: slab-use-after-free Read in sk_filter_trim_cap | ||
2024/12/04 06:44 | net | af8edaeddbc5 | b50eb251 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: slab-use-after-free Read in sk_filter_trim_cap | ||
2024/09/04 06:58 | net | 33f339a1ba54 | 9d47f20a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | KASAN: slab-use-after-free Read in sk_filter_trim_cap | ||
2024/11/03 00:35 | net-next | dbb9a7ef3478 | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | KASAN: slab-use-after-free Read in sk_filter_trim_cap |