watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.4.42:6067] Modules linked in: irq event stamp: 13801869 hardirqs last enabled at (13801868): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (13801869): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (42974): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (42974): [] __ieee80211_stop_tx_ba_session+0x4fe/0x900 net/mac80211/agg-tx.c:330 softirqs last disabled at (43291): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (43291): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (43291): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6067 Comm: syz.4.42 Not tainted 6.15.0-syzkaller-g7fdaba912981 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__module_text_address kernel/module/main.c:3758 [inline] RIP: 0010:is_module_text_address+0x88/0x1e0 kernel/module/main.c:3732 Code: 00 75 1f c6 05 ed 57 df 0d 01 48 c7 c7 c0 9c 8c 8b be 4b 03 00 00 48 c7 c2 00 9d 8c 8b e8 90 ea f2 ff 4c 89 f7 e8 88 fa ff ff <48> 85 c0 0f 84 a6 00 00 00 49 89 c7 49 bd 00 00 00 00 00 fc ff df RSP: 0018:ffffc900000070a0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff81ab74bd RCX: 783c8919e9235600 RDX: 0000000000000000 RSI: ffffffff8be28320 RDI: 00007f8768d8e929 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff81ab74bd R10: ffffc90000007178 R11: ffffffff81acf670 R12: ffff888025530000 R13: ffff888029b9a500 R14: 00007f8768d8e929 R15: 1ffff92000000e2e FS: 00007f8769b8b6c0(0000) GS:ffff888125c55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30818ff8 CR3: 0000000029bfc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kernel_text_address+0x94/0xe0 kernel/extable.c:119 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] ref_tracker_alloc+0x133/0x460 lib/ref_tracker.c:203 __netdev_tracker_alloc include/linux/netdevice.h:4341 [inline] netdev_hold include/linux/netdevice.h:4370 [inline] ___neigh_create+0xc9e/0x2260 net/core/neighbour.c:616 ip6_finish_output2+0xb4d/0x16a0 net/ipv6/ip6_output.c:132 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:317 [inline] ndisc_send_skb+0xb47/0x1400 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4041 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 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:should_resched arch/x86/include/asm/preempt.h:104 [inline] RIP: 0010:__local_bh_enable_ip+0x135/0x1c0 kernel/softirq.c:414 Code: 8b e8 bf 1e e0 09 65 66 8b 05 af 0b 17 11 66 85 c0 75 5a bf 01 00 00 00 e8 a8 32 0b 00 e8 53 43 42 00 fb 65 8b 05 8b 0b 17 11 <85> c0 75 05 e8 c2 f1 ad ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc9000ae562e0 EFLAGS: 00000282 RAX: 0000000080000000 RBX: 0000000000000201 RCX: 783c8919e9235600 RDX: 0000000000000006 RSI: ffffffff8d97cb65 RDI: ffffffff8be28340 RBP: ffffc9000ae56370 R08: ffffffff8fa100f7 R09: 1ffffffff1f4201e R10: dffffc0000000000 R11: fffffbfff1f4201f R12: ffffffff8ad92f9e R13: ffff888021bdc000 R14: dffffc0000000000 R15: 1ffff920015cac5c spin_unlock_bh include/linux/spinlock.h:396 [inline] __ieee80211_stop_tx_ba_session+0x4fe/0x900 net/mac80211/agg-tx.c:330 ieee80211_sta_tear_down_BA_sessions+0x2b0/0x5c0 net/mac80211/ht.c:329 __sta_info_destroy_part2+0x6a/0x450 net/mac80211/sta_info.c:1458 __sta_info_flush+0x5e4/0x710 net/mac80211/sta_info.c:1633 sta_info_flush net/mac80211/sta_info.h:916 [inline] ieee80211_ibss_disconnect+0x2da/0x7c0 net/mac80211/ibss.c:678 ieee80211_ibss_leave+0x47/0x150 net/mac80211/ibss.c:1814 rdev_leave_ibss net/wireless/rdev-ops.h:574 [inline] cfg80211_leave_ibss+0x1e7/0x410 net/wireless/ibss.c:203 cfg80211_netdev_notifier_call+0x1b8/0x13c0 net/wireless/core.c:1548 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline] call_netdevice_notifiers net/core/dev.c:2282 [inline] __dev_close_many+0x106/0x6f0 net/core/dev.c:1727 __dev_close net/core/dev.c:1768 [inline] __dev_change_flags+0x2c7/0x6d0 net/core/dev.c:9456 netif_change_flags+0x88/0x1a0 net/core/dev.c:9521 do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3141 rtnl_changelink net/core/rtnetlink.c:3759 [inline] __rtnl_newlink net/core/rtnetlink.c:3918 [inline] rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 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: 0033:0x7f8768d8e929 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:00007f8769b8b038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8768fb5fa0 RCX: 00007f8768d8e929 RDX: 0000000000000300 RSI: 0000200000000600 RDI: 000000000000000c RBP: 00007f8768e10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8768fb5fa0 R15: 00007ffee9eec478 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6073 Comm: syz.1.44 Not tainted 6.15.0-syzkaller-g7fdaba912981 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:perf_prepare_sample+0x25d/0x2350 kernel/events/core.c:-1 Code: 4d 89 77 40 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 40 80 3c 01 00 74 08 4c 89 ff e8 dc 46 34 00 41 80 0f 01 4c 8b 7c 24 40 <4c> 8b 74 24 10 4c 89 f6 48 83 e6 20 31 ff e8 e0 d9 d0 ff 4c 89 f0 RSP: 0018:ffffc90000a07a00 EFLAGS: 00000006 RAX: ffffffff81ef85b0 RBX: 0000000000008000 RCX: ffff88801e7cda00 RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a07af0 R08: 0000000000000000 R09: ffffffff81efb11f R10: dffffc0000000000 R11: ffffffff81efb090 R12: ffff8880575364f0 R13: 1ffff1100aea6c9e R14: ffff888057536400 R15: 1ffff92000140fb8 FS: 0000000000000000(0000) GS:ffff888125d55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555888e85c8 CR3: 0000000076976000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __perf_event_output kernel/events/core.c:8431 [inline] perf_event_output_forward+0x151/0x430 kernel/events/core.c:8452 __perf_event_overflow+0x7cc/0xe10 kernel/events/core.c:10327 perf_swevent_hrtimer+0x3c5/0x550 kernel/events/core.c:11717 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x4dd/0xc60 kernel/time/hrtimer.c:1825 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline] __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_release+0x2b5/0x3e0 kernel/locking/lockdep.c:5896 Code: 51 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 75 56 f7 c3 00 02 00 00 74 01 fb 65 48 8b 05 cb 67 fe 10 <48> 3b 44 24 28 0f 85 8b 00 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc90000a08310 EFLAGS: 00000206 RAX: 6bf6a5d7a07c7b00 RBX: 0000000000000202 RCX: 6bf6a5d7a07c7b00 RDX: 0000000000000005 RSI: ffffffff8db69606 RDI: ffffffff8be28340 RBP: ffff88801e7ce5b8 R08: ffffc90000a08f50 R09: 0000000000000000 R10: ffffc90000a08498 R11: fffff52000141095 R12: 0000000000000005 R13: 0000000000000005 R14: ffffffff8e13f060 R15: ffff88801e7cda00 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x18e/0x440 mm/slub.c:4842 pskb_expand_head+0x382/0x1150 net/core/skbuff.c:2273 netlink_trim+0x1d5/0x2e0 net/netlink/af_netlink.c:1295 netlink_unicast+0x65/0x8d0 net/netlink/af_netlink.c:1329 nlmsg_unicast include/net/netlink.h:1184 [inline] genlmsg_unicast include/net/genetlink.h:553 [inline] hwsim_unicast_netgroup+0x1be/0x2a0 drivers/net/wireless/virtual/mac80211_hwsim.c:1429 mac80211_hwsim_tx_frame_nl+0x895/0xc90 drivers/net/wireless/virtual/mac80211_hwsim.c:1609 mac80211_hwsim_beacon_tx+0x3f0/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2323 __iterate_interfaces+0x2a8/0x590 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2353 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842 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:__kasan_check_read+0xa/0x20 mm/kasan/shadow.c:31 Code: 31 ed eb cf cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 89 f6 48 8b 0c 24 <31> d2 e9 ef e4 ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc9000ae27418 EFLAGS: 00000286 RAX: ffffffff820a25d5 RBX: 0000000000000000 RCX: ffffffff820a25f0 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0001408d30 RBP: ffffc9000ae276d0 R08: ffffea0001408d07 R09: 1ffffd40002811a0 R10: dffffc0000000000 R11: fffff940002811a1 R12: 00007f2e19d21000 R13: dffffc0000000000 R14: ffff88807e292900 R15: ffffea0001408d30 instrument_atomic_read include/linux/instrumented.h:68 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] folio_mapcount include/linux/mm.h:1140 [inline] zap_present_folio_ptes mm/memory.c:1531 [inline] zap_present_ptes mm/memory.c:1590 [inline] do_zap_pte_range mm/memory.c:1691 [inline] zap_pte_range mm/memory.c:1735 [inline] zap_pmd_range mm/memory.c:1827 [inline] zap_pud_range mm/memory.c:1856 [inline] zap_p4d_range mm/memory.c:1877 [inline] unmap_page_range+0x1ef0/0x41c0 mm/memory.c:1898 unmap_single_vma mm/memory.c:1941 [inline] unmap_vmas+0x399/0x580 mm/memory.c:1985 exit_mmap+0x248/0xb50 mm/mmap.c:1284 __mmput+0x118/0x420 kernel/fork.c:1121 exit_mm+0x1da/0x2c0 kernel/exit.c:581 do_exit+0x640/0x22e0 kernel/exit.c:943 do_group_exit+0x21c/0x2d0 kernel/exit.c:1104 get_signal+0x1286/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] irqentry_exit_to_user_mode+0x81/0x120 kernel/entry/common.c:184 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0033:0x7f2e1b2541e7 Code: Unable to access opcode bytes at 0x7f2e1b2541bd. RSP: 002b:00007f2e1c2b6040 EFLAGS: 00000207 RAX: 0000000000000006 RBX: 00007f2e1b5b5fa0 RCX: 00007f2e1b38e929 RDX: affffff7ffffffff RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007f2e1b410b39 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2e1b5b5fa0 R15: 00007ffd29ae0358