===================================================== BUG: KMSAN: uninit-value in __list_del_entry_valid+0x1c2/0x470 lib/list_debug.c:45 __list_del_entry_valid+0x1c2/0x470 lib/list_debug.c:45 __list_del_entry include/linux/list.h:134 [inline] list_del_init include/linux/list.h:206 [inline] flush_sigqueue+0xc1/0x4e0 kernel/signal.c:468 __exit_signal kernel/exit.c:163 [inline] release_task+0x1e3b/0x2a50 kernel/exit.c:201 wait_task_zombie kernel/exit.c:1123 [inline] wait_consider_task+0x2be5/0x4b80 kernel/exit.c:1350 do_wait_thread kernel/exit.c:1413 [inline] do_wait+0x3ce/0x1310 kernel/exit.c:1530 kernel_wait4+0x40b/0x610 kernel/exit.c:1693 __do_sys_wait4 kernel/exit.c:1721 [inline] __se_sys_wait4 kernel/exit.c:1717 [inline] __x64_sys_wait4+0x1f1/0x3f0 kernel/exit.c:1717 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae Uninit was created at: __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5429 alloc_pages+0xa08/0xd50 alloc_slab_page mm/slub.c:1816 [inline] allocate_slab+0x29e/0x1b00 mm/slub.c:1961 new_slab mm/slub.c:2021 [inline] ___slab_alloc+0xb52/0x1da0 mm/slub.c:3035 __slab_alloc mm/slub.c:3122 [inline] slab_alloc_node mm/slub.c:3213 [inline] slab_alloc mm/slub.c:3255 [inline] kmem_cache_alloc+0xbb3/0x11c0 mm/slub.c:3260 __sigqueue_alloc+0x2af/0x4e0 kernel/signal.c:435 sigqueue_alloc+0x60/0x70 kernel/signal.c:1923 alloc_posix_timer kernel/time/posix-timers.c:461 [inline] do_timer_create+0x3d6/0x22a0 kernel/time/posix-timers.c:511 __se_sys_timer_create kernel/time/posix-timers.c:577 [inline] __x64_sys_timer_create+0x294/0x2e0 kernel/time/posix-timers.c:577 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x44/0xae CPU: 1 PID: 3519 Comm: syz-executor.1 Not tainted 5.17.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================