=====================================================
BUG: KMSAN: uninit-value in lec_atm_send+0x2207/0x55e0 net/atm/lec.c:390
 lec_atm_send+0x2207/0x55e0 net/atm/lec.c:390
 vcc_sendmsg+0x104e/0x11b0 net/atm/common.c:650
 sock_sendmsg_nosec net/socket.c:792 [inline]
 __sock_sendmsg net/socket.c:807 [inline]
 ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2657
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2711
 __sys_sendmsg+0x1aa/0x300 net/socket.c:2743
 __compat_sys_sendmsg net/compat.c:346 [inline]
 __do_compat_sys_sendmsg net/compat.c:353 [inline]
 __se_compat_sys_sendmsg net/compat.c:350 [inline]
 __ia32_compat_sys_sendmsg+0xa4/0x100 net/compat.c:350
 ia32_sys_call+0x1e4a/0x4360 arch/x86/include/generated/asm/syscalls_32.h:371
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4545 [inline]
 slab_alloc_node mm/slub.c:4866 [inline]
 kmem_cache_alloc_node_noprof+0x3cd/0x12d0 mm/slub.c:4918
 kmalloc_reserve net/core/skbuff.c:613 [inline]
 __alloc_skb+0x855/0x1190 net/core/skbuff.c:713
 alloc_skb include/linux/skbuff.h:1383 [inline]
 vcc_sendmsg+0x601/0x11b0 net/atm/common.c:628
 sock_sendmsg_nosec net/socket.c:792 [inline]
 __sock_sendmsg net/socket.c:807 [inline]
 ____sys_sendmsg+0xf37/0xfd0 net/socket.c:2657
 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2711
 __sys_sendmsg+0x1aa/0x300 net/socket.c:2743
 __compat_sys_sendmsg net/compat.c:346 [inline]
 __do_compat_sys_sendmsg net/compat.c:353 [inline]
 __se_compat_sys_sendmsg net/compat.c:350 [inline]
 __ia32_compat_sys_sendmsg+0xa4/0x100 net/compat.c:350
 ia32_sys_call+0x1e4a/0x4360 arch/x86/include/generated/asm/syscalls_32.h:371
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x17f/0x3f0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 1 UID: 0 PID: 15906 Comm: syz.2.3187 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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