Hello, syzbot found the following issue on: HEAD commit: 6465e260f487 Linux 6.6-rc3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=114f1f96680000 kernel config: https://syzkaller.appspot.com/x/.config?x=8d7d7928f78936aa dashboard link: https://syzkaller.appspot.com/bug?extid=29c22ea2d6b2c5fd2eae compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15c6888e680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=174c3996680000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-6465e260.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3560b94cfbc8/vmlinux-6465e260.xz kernel image: https://storage.googleapis.com/syzbot-assets/a098d6f44df3/bzImage-6465e260.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+29c22ea2d6b2c5fd2eae@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== 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+0x1f7/0x230 kernel/locking/spinlock_debug.c:140 Read of size 4 at addr ffff88801f5a7d3c by task kworker/2:1/36 CPU: 2 PID: 36 Comm: kworker/2:1 Not tainted 6.6.0-rc3-syzkaller #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: <TASK> __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+0x1f7/0x230 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+0x884/0x15c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x33c/0x440 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:304 </TASK> Allocated by task 19233: 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:599 [inline] kzalloc include/linux/slab.h:720 [inline] tls_set_sw_offload+0x12e0/0x1700 net/tls/tls_sw.c:2606 do_tls_setsockopt_conf net/tls/tls_main.c:667 [inline] do_tls_setsockopt net/tls/tls_main.c:772 [inline] tls_setsockopt+0x108c/0x1340 net/tls/tls_main.c:800 __sys_setsockopt+0x2cd/0x5b0 net/socket.c:2308 __do_sys_setsockopt net/socket.c:2319 [inline] __se_sys_setsockopt net/socket.c:2316 [inline] __x64_sys_setsockopt+0xbd/0x150 net/socket.c:2316 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 19233: 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/0x2d0 mm/slab.c:3564 tls_sk_proto_close+0x4c3/0xb00 net/tls/tls_main.c:390 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:484 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1402 __fput+0x3f7/0xa70 fs/file_table.c:384 task_work_run+0x14d/0x240 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa92/0x2a20 kernel/exit.c:874 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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:3372 tls_ctx_free net/tls/tls_main.c:333 [inline] tls_ctx_free+0x69/0x90 net/tls/tls_main.c:323 tls_sk_proto_close+0x46b/0xb00 net/tls/tls_main.c:398 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:484 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1402 __fput+0x3f7/0xa70 fs/file_table.c:384 task_work_run+0x14d/0x240 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa92/0x2a20 kernel/exit.c:874 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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:3372 tls_ctx_free net/tls/tls_main.c:333 [inline] tls_ctx_free+0x69/0x90 net/tls/tls_main.c:323 tls_sk_proto_close+0x46b/0xb00 net/tls/tls_main.c:398 inet_release+0x132/0x270 net/ipv4/af_inet.c:433 inet6_release+0x4f/0x70 net/ipv6/af_inet6.c:484 __sock_release+0xae/0x260 net/socket.c:659 sock_close+0x1c/0x20 net/socket.c:1402 __fput+0x3f7/0xa70 fs/file_table.c:384 task_work_run+0x14d/0x240 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa92/0x2a20 kernel/exit.c:874 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88801f5a7c00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 316 bytes inside of freed 512-byte region [ffff88801f5a7c00, ffff88801f5a7e00) The buggy address belongs to the physical page: page:ffffea00007d69c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f5a7 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0x4() raw: 00fff00000000800 ffff888012c40600 ffffea000076b490 ffffea00006bae50 raw: 0000000000000000 ffff88801f5a7000 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 0x242020(__GFP_HIGH|__GFP_NOWARN|__GFP_COMP|__GFP_THISNODE), pid 6562, tgid 6562 (syz-executor469), ts 291264206650, free_ts 291263177339 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426 __alloc_pages_node include/linux/gfp.h:237 [inline] kmem_getpages mm/slab.c:1356 [inline] cache_grow_begin+0x99/0x3a0 mm/slab.c:2550 cache_alloc_refill+0x294/0x3a0 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+0x3c5/0x470 mm/slab.c:3521 kmalloc_trace+0x25/0xe0 mm/slab_common.c:1114 kmalloc include/linux/slab.h:599 [inline] kzalloc include/linux/slab.h:720 [inline] tls_ctx_create+0x45/0x140 net/tls/tls_main.c:808 tls_init net/tls/tls_main.c:951 [inline] tls_init+0x11e/0xbc0 net/tls/tls_main.c:928 __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline] tcp_set_ulp+0x31f/0x7e0 net/ipv4/tcp_ulp.c:167 do_tcp_setsockopt+0x5cb/0x2830 net/ipv4/tcp.c:3429 tcp_setsockopt+0xd4/0x100 net/ipv4/tcp.c:3679 __sys_setsockopt+0x2cd/0x5b0 net/socket.c:2308 __do_sys_setsockopt net/socket.c:2319 [inline] __se_sys_setsockopt net/socket.c:2316 [inline] __x64_sys_setsockopt+0xbd/0x150 net/socket.c:2316 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405 __folio_put_small mm/swap.c:106 [inline] __folio_put+0xc3/0x110 mm/swap.c:129 folio_put include/linux/mm.h:1475 [inline] put_page include/linux/mm.h:1544 [inline] free_page_and_swap_cache+0x25a/0x2d0 mm/swap_state.c:303 __tlb_remove_table arch/x86/include/asm/tlb.h:34 [inline] __tlb_remove_table_free mm/mmu_gather.c:154 [inline] tlb_remove_table_rcu+0x89/0xe0 mm/mmu_gather.c:209 rcu_do_batch kernel/rcu/tree.c:2139 [inline] rcu_core+0x805/0x1bb0 kernel/rcu/tree.c:2403 __do_softirq+0x218/0x965 kernel/softirq.c:553 Memory state around the buggy address: ffff88801f5a7c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801f5a7c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88801f5a7d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801f5a7d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801f5a7e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
