watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.8.751:8881] Modules linked in: irq event stamp: 10541787 hardirqs last enabled at (10541786): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (10541787): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (28764): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (28764): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (28764): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (28769): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (28769): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (28769): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 8881 Comm: syz.8.751 Not tainted 6.16.0-rc4-syzkaller-gbf4807c89d8f #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:cmp_bss+0x63c/0xe80 net/wireless/scan.c:1493 Code: bd 00 00 00 00 00 fc ff df eb 0f e8 6e 58 fc f6 eb 08 e8 67 58 fc f6 45 31 f6 48 8d 5d 18 48 89 d8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 f1 06 00 00 8b 1b bf 01 00 00 00 89 de e8 7e 5c fc f6 RSP: 0018:ffffc90000a08060 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffff88807286cd18 RCX: ffff8880549d5a00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88807286cd00 R08: 0000000000000000 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000141030 R12: 0000000000000006 R13: dffffc0000000000 R14: ffff8880732ae81d R15: ffff8880732ae845 FS: 00007f0ffbd9c6c0(0000) GS:ffff888125d1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0ffbd9bf98 CR3: 0000000033a7a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rb_find_bss net/wireless/scan.c:1682 [inline] __cfg80211_bss_update+0xdb/0x2120 net/wireless/scan.c:1969 cfg80211_inform_single_bss_data+0xba9/0x1ac0 net/wireless/scan.c:2363 cfg80211_inform_bss_data+0x1fb/0x3b20 net/wireless/scan.c:3222 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3313 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355 __ieee80211_rx_handle_packet net/mac80211/rx.c:5183 [inline] ieee80211_rx_list+0x22fc/0x2d80 net/mac80211/rx.c:5420 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5443 ieee80211_rx include/net/mac80211.h:5185 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:441 tasklet_action_common+0x369/0x580 kernel/softirq.c:829 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:raw_spin_rq_unlock_irq+0x13/0x90 kernel/sched/sched.h:1545 Code: cc e8 51 1f dc 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 66 90 e8 f4 ab de 09 e8 2f e2 34 00 fb 5b <41> 5e 41 5f e9 04 fa de 09 cc f3 0f 1e fa 49 be 00 00 00 00 00 fc RSP: 0018:ffffc900044bf448 EFLAGS: 00000286 RAX: d18a91ae01e68700 RBX: ffff8880549d6180 RCX: d18a91ae01e68700 RDX: 0000000000000000 RSI: ffffffff8d996a93 RDI: ffffffff8be28f40 RBP: ffffc900044bf670 R08: ffffffff8fa1d6f7 R09: 1ffffffff1f43ade R10: dffffc0000000000 R11: fffffbfff1f43adf R12: ffff8880549d5a00 R13: dffffc0000000000 R14: ffff8880549d5a00 R15: ffff8880b8739f80 __schedule+0x1948/0x4d00 kernel/sched/core.c:6789 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7058 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:482 [inline] __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x347/0x360 kernel/locking/lockdep.c:5834 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] __page_table_check_zero+0xd7/0x530 mm/page_table_check.c:138 page_table_check_alloc include/linux/page_table_check.h:35 [inline] post_alloc_hook+0x253/0x2a0 mm/page_alloc.c:1705 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:4993 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline] alloc_pages_node_noprof include/linux/gfp.h:311 [inline] bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:125 [inline] bpf_ringbuf_alloc+0x93/0x590 kernel/bpf/ringbuf.c:173 ringbuf_map_alloc+0x1c8/0x2f0 kernel/bpf/ringbuf.c:208 map_create+0x903/0x1150 kernel/bpf/syscall.c:1477 __sys_bpf+0x67e/0x860 kernel/bpf/syscall.c:5818 __do_sys_bpf kernel/bpf/syscall.c:5943 [inline] __se_sys_bpf kernel/bpf/syscall.c:5941 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5941 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0ffaf8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0ffbd9c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f0ffb1b5fa0 RCX: 00007f0ffaf8e929 RDX: 0000000000000048 RSI: 00002000000000c0 RDI: 0000000000000000 RBP: 00007f0ffb010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0ffb1b5fa0 R15: 00007ffff2bb2698 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 49 Comm: kworker/u8:3 Not tainted 6.16.0-rc4-syzkaller-gbf4807c89d8f #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: bat_events batadv_nc_worker RIP: 0010:__kasan_check_byte+0x2d/0x40 mm/kasan/common.c:561 Code: 00 41 56 53 48 89 f3 49 89 fe e8 5e 14 00 00 84 c0 75 16 be 01 00 00 00 4c 89 f7 31 d2 48 89 d9 89 c3 e8 c6 03 00 00 89 d8 5b <41> 5e c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 RSP: 0018:ffffc90000b97970 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0a492a134ec88400 RDX: 0000000000000000 RSI: ffffffff8b3cee1f RDI: 1ffffffff1c27dc4 RBP: ffffffff8b3cee02 R08: ffffc90000b9778f R09: 0000000000000000 R10: ffffc90000b97780 R11: ffffffffa0201798 R12: 0000000000000002 R13: ffffffff8e13ee20 R14: ffffffff8e13ee20 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888125c1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056111c50ca58 CR3: 000000003433e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: kasan_check_byte include/linux/kasan.h:399 [inline] lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5845 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0xef/0x610 net/batman-adv/network-coding.c:719 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245