------------[ cut here ]------------ WARNING: CPU: 1 PID: 6278 at net/tls/tls_strp.c:493 tls_strp_msg_load+0x5ac/0x82c net/tls/tls_strp.c:493 Modules linked in: CPU: 1 PID: 6278 Comm: syz.0.443 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : tls_strp_msg_load+0x5ac/0x82c net/tls/tls_strp.c:493 lr : tls_strp_msg_load+0x5ac/0x82c net/tls/tls_strp.c:493 sp : ffff800020a074c0 x29: ffff800020a07540 x28: 1fffe0001e782c9b x27: 1fffe0001e782c9b x26: ffff700004140e9c x25: dfff800000000000 x24: ffff0000f3c164dc x23: 0000000000000000 x22: 000000000000001e x21: ffff0000c3a9c9e0 x20: ffff0000f3c164d0 x19: ffff0000f3c164d8 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800011b9ccb8 x15: 0000000000000002 x14: 0000000000000002 x13: 1ffff00004140f06 x12: 0000000000080000 x11: 0000000000000273 x10: ffff800025db9000 x9 : ffff800010899fd4 x8 : 0000000000000274 x7 : 0000000000000000 x6 : ffff800020a077fc x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000001 x2 : 0000000000000001 x1 : 000000000000001e x0 : 0000000000000000 Call trace: tls_strp_msg_load+0x5ac/0x82c net/tls/tls_strp.c:493 tls_rx_rec_wait+0x784/0x8c0 net/tls/tls_sw.c:1513 tls_sw_recvmsg+0x554/0x181c net/tls/tls_sw.c:2170 inet_recvmsg+0x118/0x1c8 net/ipv4/af_inet.c:890 ____sys_recvmsg+0x270/0x754 net/socket.c:-1 ___sys_recvmsg net/socket.c:2780 [inline] __sys_recvmsg+0x250/0x33c net/socket.c:2810 __do_sys_recvmsg net/socket.c:2820 [inline] __se_sys_recvmsg net/socket.c:2817 [inline] __arm64_sys_recvmsg+0x80/0x94 net/socket.c:2817 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 814 hardirqs last enabled at (813): [] __local_bh_enable_ip+0x1f8/0x37c kernel/softirq.c:426 hardirqs last disabled at (814): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (812): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (812): [] lock_sock_nested+0xe0/0x130 net/core/sock.c:3511 softirqs last disabled at (810): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (810): [] lock_sock_nested+0x88/0x130 net/core/sock.c:3507 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: use-after-free in __skb_nsg+0x474/0x504 net/tls/tls_sw.c:126 Read of size 4 at addr ffff0000dda4d2e0 by task syz.0.443/6278 CPU: 0 PID: 6278 Comm: syz.0.443 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0xfc mm/kasan/report.c:524 __asan_report_load4_noabort+0x2c/0x38 mm/kasan/report_generic.c:350 __skb_nsg+0x474/0x504 net/tls/tls_sw.c:126 skb_nsg net/tls/tls_sw.c:153 [inline] tls_decrypt_sg+0x268/0x27c8 net/tls/tls_sw.c:1636 tls_decrypt_sw+0xb8/0x9e0 net/tls/tls_sw.c:1798 tls_rx_one_record+0x164/0xc18 net/tls/tls_sw.c:1889 tls_sw_recvmsg+0x7e8/0x181c net/tls/tls_sw.c:2202 inet_recvmsg+0x118/0x1c8 net/ipv4/af_inet.c:890 ____sys_recvmsg+0x270/0x754 net/socket.c:-1 ___sys_recvmsg net/socket.c:2780 [inline] __sys_recvmsg+0x250/0x33c net/socket.c:2810 __do_sys_recvmsg net/socket.c:2820 [inline] __se_sys_recvmsg net/socket.c:2817 [inline] __arm64_sys_recvmsg+0x80/0x94 net/socket.c:2817 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 6278: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:53 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x430 mm/slab.h:737 slab_alloc_node mm/slub.c:3359 [inline] kmem_cache_alloc_node+0x258/0x344 mm/slub.c:3404 __alloc_skb+0x128/0x728 net/core/skbuff.c:505 alloc_skb_fclone include/linux/skbuff.h:1353 [inline] tcp_stream_alloc_skb+0x48/0x2d8 net/ipv4/tcp.c:873 tcp_build_frag net/ipv4/tcp.c:998 [inline] do_tcp_sendpages+0x798/0x22dc net/ipv4/tcp.c:1087 tls_push_sg+0x128/0x6e4 net/tls/tls_main.c:150 tls_tx_records+0x2bc/0x4e8 net/tls/tls_sw.c:445 tls_push_record+0x1860/0x2d78 net/tls/tls_sw.c:865 bpf_exec_tx_verdict+0xc88/0x1258 net/tls/tls_sw.c:885 tls_sw_sendmsg+0xabc/0x14d4 net/tls/tls_sw.c:1120 inet_sendmsg+0x154/0x27c net/ipv4/af_inet.c:841 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x588/0x90c net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmsg+0x288/0x374 net/socket.c:2602 __do_sys_sendmsg net/socket.c:2611 [inline] __se_sys_sendmsg net/socket.c:2609 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Freed by task 6272: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:53 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x148/0x1b0 mm/kasan/common.c:237 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:245 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x16c/0x1e8 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] kmem_cache_free+0x118/0x318 mm/slub.c:3709 kfree_skbmem+0x10c/0x198 net/core/skbuff.c:-1 __kfree_skb net/core/skbuff.c:871 [inline] skb_attempt_defer_free+0x268/0x40c net/core/skbuff.c:6714 tcp_eat_recv_skb net/ipv4/tcp.c:1665 [inline] tcp_recvmsg_locked+0xd6c/0x1c1c net/ipv4/tcp.c:2678 tcp_recvmsg+0x194/0x67c net/ipv4/tcp.c:2724 inet_recvmsg+0x118/0x1c8 net/ipv4/af_inet.c:890 sock_recvmsg_nosec net/socket.c:1023 [inline] sock_recvmsg net/socket.c:1041 [inline] __sys_recvfrom+0x2cc/0x40c net/socket.c:2205 __do_sys_recvfrom net/socket.c:2223 [inline] __se_sys_recvfrom net/socket.c:2219 [inline] __arm64_sys_recvfrom+0xe4/0x104 net/socket.c:2219 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000dda4d180 which belongs to the cache skbuff_fclone_cache of size 488 The buggy address is located 352 bytes inside of 488-byte region [ffff0000dda4d180, ffff0000dda4d368) The buggy address belongs to the physical page: page:00000000d3b8dc14 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11da4c head:00000000d3b8dc14 order:1 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc0003282d00 dead000000000003 ffff0000c0870300 raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000dda4d180: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dda4d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000dda4d280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000dda4d300: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc ffff0000dda4d380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6278 at net/core/skbuff.c:4603 __skb_to_sgvec+0x540/0x900 net/core/skbuff.c:4603 Modules linked in: CPU: 1 PID: 6278 Comm: syz.0.443 Tainted: G B W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __skb_to_sgvec+0x540/0x900 net/core/skbuff.c:4603 lr : __skb_to_sgvec+0x540/0x900 net/core/skbuff.c:4603 sp : ffff800020a07120 x29: ffff800020a07170 x28: 1fffe0001df8bb59 x27: ffff0000f49bd908 x26: dfff800000000000 x25: ffff0000efc5dad0 x24: 0000000000000000 x23: 000000000000000d x22: ffff0000efc5dacc x21: 0000000000000000 x20: 00000000fffffff1 x19: 00000000ffffffe4 x18: 1fffe00033e7217e x17: 0000000000fe010c x16: ffff800011b9ccb8 x15: 0000000000000002 x14: 0000000000000008 x13: 1fffe0001e937b1d x12: 0000000000080000 x11: 000000000007ffff x10: ffff800025db9000 x9 : ffff80000febc668 x8 : 0000000000080000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff0000f49bd8a0 x4 : 0000000000000000 x3 : 00000000ffffffe4 x2 : 000000000000000d x1 : 00000000fffffff1 x0 : 0000000000000000 Call trace: __skb_to_sgvec+0x540/0x900 net/core/skbuff.c:4603 skb_to_sgvec+0x40/0xb4 net/core/skbuff.c:4664 tls_decrypt_sg+0xe6c/0x27c8 net/tls/tls_sw.c:1727 tls_decrypt_sw+0xb8/0x9e0 net/tls/tls_sw.c:1798 tls_rx_one_record+0x164/0xc18 net/tls/tls_sw.c:1889 tls_sw_recvmsg+0x7e8/0x181c net/tls/tls_sw.c:2202 inet_recvmsg+0x118/0x1c8 net/ipv4/af_inet.c:890 ____sys_recvmsg+0x270/0x754 net/socket.c:-1 ___sys_recvmsg net/socket.c:2780 [inline] __sys_recvmsg+0x250/0x33c net/socket.c:2810 __do_sys_recvmsg net/socket.c:2820 [inline] __se_sys_recvmsg net/socket.c:2817 [inline] __arm64_sys_recvmsg+0x80/0x94 net/socket.c:2817 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 1135 hardirqs last enabled at (1135): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (1135): [] finish_lock_switch+0xb0/0x1c8 kernel/sched/core.c:5005 hardirqs last disabled at (1134): [] __schedule+0x294/0x1a6c kernel/sched/core.c:6461 softirqs last enabled at (1122): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (1122): [] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624 softirqs last disabled at (817): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:4646! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6278 Comm: syz.0.443 Tainted: G B W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __skb_to_sgvec+0x8fc/0x900 net/core/skbuff.c:4646 lr : __skb_to_sgvec+0x8fc/0x900 net/core/skbuff.c:4646 sp : ffff800020a07120 x29: ffff800020a07170 x28: 1fffe0001df8bb59 x27: ffff0000f49bd908 x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000000 x23: 000000000000000d x22: ffff0000efc5dacc x21: 0000000000000001 x20: ffff0000d4ed70c0 x19: 00000000ffffffe4 x18: 1fffe00033e7217e x17: 0000000000fe010c x16: ffff800011b9ccb8 x15: 0000000000000002 x14: 0000000000000008 x13: 1fffe0001e937b1d x12: 0000000000080000 x11: 000000000007ffff x10: ffff800025db9000 x9 : ffff80000febca24 x8 : 0000000000080000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff0000f49bd8a0 x4 : 0000000000000000 x3 : 00000000ffffffe4 x2 : 000000000000000d x1 : 00000000ffffffe4 x0 : 0000000000000000 Call trace: __skb_to_sgvec+0x8fc/0x900 net/core/skbuff.c:4646 skb_to_sgvec+0x40/0xb4 net/core/skbuff.c:4664 tls_decrypt_sg+0xe6c/0x27c8 net/tls/tls_sw.c:1727 tls_decrypt_sw+0xb8/0x9e0 net/tls/tls_sw.c:1798 tls_rx_one_record+0x164/0xc18 net/tls/tls_sw.c:1889 tls_sw_recvmsg+0x7e8/0x181c net/tls/tls_sw.c:2202 inet_recvmsg+0x118/0x1c8 net/ipv4/af_inet.c:890 ____sys_recvmsg+0x270/0x754 net/socket.c:-1 ___sys_recvmsg net/socket.c:2780 [inline] __sys_recvmsg+0x250/0x33c net/socket.c:2810 __do_sys_recvmsg net/socket.c:2820 [inline] __se_sys_recvmsg net/socket.c:2817 [inline] __arm64_sys_recvmsg+0x80/0x94 net/socket.c:2817 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: d4210000 9617d88d d4210000 9617d88b (d4210000) ---[ end trace 0000000000000000 ]---