================================================================== BUG: KASAN: slab-use-after-free in debug_spin_unlock kernel/locking/spinlock_debug.c:99 [inline] BUG: KASAN: slab-use-after-free in do_raw_spin_unlock+0x1f8/0x230 kernel/locking/spinlock_debug.c:140 Read of size 4 at addr ffff888028f4cd3c by task kworker/1:1/44 CPU: 1 PID: 44 Comm: kworker/1:1 Not tainted 6.7.0-rc6-syzkaller-gceb6a6f023fd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: pencrypt_serial padata_serial_worker Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 debug_spin_unlock kernel/locking/spinlock_debug.c:99 [inline] do_raw_spin_unlock+0x1f8/0x230 kernel/locking/spinlock_debug.c:140 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:166 [inline] _raw_spin_unlock_bh+0x1e/0x30 kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] tls_encrypt_done+0x281/0x560 net/tls/tls_sw.c:488 padata_serial_worker+0x246/0x490 kernel/padata.c:378 process_one_work+0x886/0x15d0 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Allocated by task 18204: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa3/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:721 [inline] init_ctx_tx net/tls/tls_sw.c:2598 [inline] tls_set_sw_offload+0xe25/0x1240 net/tls/tls_sw.c:2684 do_tls_setsockopt_conf net/tls/tls_main.c:673 [inline] do_tls_setsockopt net/tls/tls_main.c:778 [inline] tls_setsockopt+0x10a2/0x13d0 net/tls/tls_main.c:806 do_sock_setsockopt+0x222/0x470 net/socket.c:2311 __sys_setsockopt+0x1a6/0x270 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xbd/0x150 net/socket.c:2340 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 18203: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x138/0x190 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:164 [inline] __cache_free mm/slab.c:3370 [inline] __do_kmem_cache_free mm/slab.c:3557 [inline] __kmem_cache_free+0xcc/0x3d0 mm/slab.c:3564 tls_sk_proto_close+0x4c3/0xac0 net/tls/tls_main.c:393 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:485 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1419 __fput+0x270/0xb70 fs/file_table.c:394 __fput_sync+0x47/0x50 fs/file_table.c:475 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __x64_sys_close+0x87/0xf0 fs/open.c:1572 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492 kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3400 tls_ctx_free net/tls/tls_main.c:338 [inline] tls_ctx_free+0x6c/0x90 net/tls/tls_main.c:328 tls_sk_proto_close+0x46b/0xac0 net/tls/tls_main.c:401 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:485 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1419 __fput+0x270/0xb70 fs/file_table.c:394 __fput_sync+0x47/0x50 fs/file_table.c:475 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __x64_sys_close+0x87/0xf0 fs/open.c:1572 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0x78/0x80 mm/kasan/generic.c:492 kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3400 tls_ctx_free net/tls/tls_main.c:338 [inline] tls_ctx_free+0x6c/0x90 net/tls/tls_main.c:328 tls_sk_proto_close+0x46b/0xac0 net/tls/tls_main.c:401 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:485 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1419 __fput+0x270/0xb70 fs/file_table.c:394 __fput_sync+0x47/0x50 fs/file_table.c:475 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __x64_sys_close+0x87/0xf0 fs/open.c:1572 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff888028f4cc00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 316 bytes inside of freed 512-byte region [ffff888028f4cc00, ffff888028f4ce00) The buggy address belongs to the physical page: page:ffffea0000a3d300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x28f4c flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0x4() raw: 00fff00000000800 ffff888013040600 ffffea0000ee0c90 ffffea00009500d0 raw: 0000000000000000 ffff888028f4c000 0000000100000004 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 0x3420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 4674, tgid 4674 (udevd), ts 83312284814, free_ts 83298258990 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568 __alloc_pages_node include/linux/gfp.h:238 [inline] kmem_getpages mm/slab.c:1356 [inline] cache_grow_begin+0x99/0x3a0 mm/slab.c:2550 cache_alloc_refill+0x295/0x3b0 mm/slab.c:2923 ____cache_alloc mm/slab.c:2999 [inline] ____cache_alloc mm/slab.c:2982 [inline] __do_cache_alloc mm/slab.c:3182 [inline] slab_alloc_node mm/slab.c:3230 [inline] __kmem_cache_alloc_node+0x3ba/0x460 mm/slab.c:3521 kmalloc_trace+0x25/0x60 mm/slab_common.c:1098 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:721 [inline] kernfs_fop_open+0x28b/0xd30 fs/kernfs/file.c:621 do_dentry_open+0x8d6/0x18c0 fs/open.c:948 do_open fs/namei.c:3622 [inline] path_openat+0x1e5a/0x2c50 fs/namei.c:3779 do_filp_open+0x1de/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1463 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2487 rcu_do_batch kernel/rcu/tree.c:2158 [inline] rcu_core+0x819/0x1680 kernel/rcu/tree.c:2431 __do_softirq+0x21a/0x8de kernel/softirq.c:553 Memory state around the buggy address: ffff888028f4cc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888028f4cc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888028f4cd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888028f4cd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888028f4ce00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================