syzbot

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BUG: KMSAN: uninit-value in __min_slice_update kernel/sched/fair.c:816 [inline]
BUG: KMSAN: uninit-value in min_vruntime_update kernel/sched/fair.c:835 [inline]
BUG: KMSAN: uninit-value in min_vruntime_cb_propagate kernel/sched/fair.c:842 [inline]
BUG: KMSAN: uninit-value in rb_add_augmented_cached include/linux/rbtree_augmented.h:83 [inline]
BUG: KMSAN: uninit-value in __enqueue_entity+0xa4d/0xcd0 kernel/sched/fair.c:853
 __min_slice_update kernel/sched/fair.c:816 [inline]
 min_vruntime_update kernel/sched/fair.c:835 [inline]
 min_vruntime_cb_propagate kernel/sched/fair.c:842 [inline]
 rb_add_augmented_cached include/linux/rbtree_augmented.h:83 [inline]
 __enqueue_entity+0xa4d/0xcd0 kernel/sched/fair.c:853
 enqueue_entity kernel/sched/fair.c:5286 [inline]
 enqueue_task_fair+0x100b/0x44a0 kernel/sched/fair.c:6973
 enqueue_task+0x68/0x390 kernel/sched/core.c:2092
 activate_task kernel/sched/core.c:2134 [inline]
 ttwu_do_activate+0x1dd/0x9d0 kernel/sched/core.c:3706
 ttwu_queue kernel/sched/core.c:3969 [inline]
 try_to_wake_up+0xf83/0x1f50 kernel/sched/core.c:4293
 wake_up_process+0x2a/0x40 kernel/sched/core.c:4424
 hrtimer_wakeup+0x85/0xd0 kernel/time/hrtimer.c:2013
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x559/0xd80 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x456/0xb80 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0xaa/0x420 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0x7f/0x90 arch/x86/kernel/apic/apic.c:1052
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:697
 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline]
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x33/0x60 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 free_pcppages_bulk+0xbe9/0xc10 mm/page_alloc.c:1492
 free_frozen_page_commit+0x946/0x1270 mm/page_alloc.c:2868
 __free_frozen_pages+0x799/0x14f0 mm/page_alloc.c:2934
 ___free_pages+0xa5/0x1b0 mm/page_alloc.c:5264
 __free_pages+0x21/0x30 mm/page_alloc.c:5302
 vfree+0x589/0xa20 mm/vmalloc.c:3440
 kvfree+0x3b/0x60 mm/slub.c:7145
 translate_table+0x109f/0x3530 net/ipv6/netfilter/ip6_tables.c:751
 do_replace net/ipv6/netfilter/ip6_tables.c:1154 [inline]
 do_ip6t_set_ctl+0x148e/0x1da0 net/ipv6/netfilter/ip6_tables.c:1644
 nf_setsockopt+0x4fb/0x550 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x1c3/0x300 net/ipv6/ipv6_sockglue.c:978
 tcp_setsockopt+0x157/0x180 net/ipv4/tcp.c:4142
 sock_common_setsockopt+0xf5/0x140 net/core/sock.c:3912
 do_sock_setsockopt net/socket.c:2360 [inline]
 __sys_setsockopt+0x43e/0x580 net/socket.c:2385
 __do_sys_setsockopt net/socket.c:2391 [inline]
 __se_sys_setsockopt net/socket.c:2388 [inline]
 __x64_sys_setsockopt+0xf4/0x1a0 net/socket.c:2388
 x64_sys_call+0x27c9/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __netns_tracker_alloc include/net/net_namespace.h:362 [inline]
 sk_alloc+0x5de/0x8a0 net/core/sock.c:2311
 __netlink_create net/netlink/af_netlink.c:628 [inline]
 __netlink_kernel_create+0x19b/0xcc0 net/netlink/af_netlink.c:2020
 netlink_kernel_create include/linux/netlink.h:62 [inline]
 iscsi_transport_init+0x285/0x4e0 drivers/scsi/scsi_transport_iscsi.c:4983
 do_one_initcall+0x237/0xb60 init/main.c:1283
 do_initcall_level+0x157/0x2e0 init/main.c:1345
 do_initcalls+0x176/0x310 init/main.c:1361
 do_basic_setup+0x1d/0x30 init/main.c:1380
 kernel_init_freeable+0x275/0x4a0 init/main.c:1593
 kernel_init+0x2f/0x5e0 init/main.c:1483
 ret_from_fork+0x1f5/0x4c0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

CPU: 1 UID: 0 PID: 3272 Comm: syz.3.9286 Tainted: G        W           syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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