watchdog: BUG: soft lockup - CPU#0 stuck for 117s! [syz.1.134:6396] Modules linked in: irq event stamp: 15905023 hardirqs last enabled at (15905022): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (15905023): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (15665982): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (15665982): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (15665982): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (15665985): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (15665985): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (15665985): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6396 Comm: syz.1.134 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:842 [inline] RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1155 [inline] RIP: 0010:unwind_next_frame+0xd9/0x23b0 arch/x86/kernel/unwind_orc.c:479 Code: 3b 00 4c 8d 3d 00 00 00 00 48 c7 c7 e0 df d3 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 57 e8 8b f2 30 00 48 83 c4 08 e2 2c c2 0a 85 c0 74 3a e8 59 b9 3a 00 84 c0 75 31 e8 d0 2c c2 RSP: 0018:ffffc90000007268 EFLAGS: 00000282 RAX: ec3d55ffbe0d7b00 RBX: 1ffff92000000e68 RCX: ec3d55ffbe0d7b00 RDX: 0000000000000000 RSI: ffffffff8e4fc3ef RDI: ffffffff8ca1b0e0 RBP: ffffc90000007378 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000007340 R13: dffffc0000000000 R14: ffffffff8ba837f7 R15: ffffffff816dfbc8 FS: 0000000000000000(0000) GS:ffff888124f97000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa542b24360 CR3: 000000003471e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_node_noprof+0x1f2/0x3b0 mm/slub.c:4252 kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:577 __alloc_skb+0x1f2/0x480 net/core/skbuff.c:668 skb_copy+0x1a0/0x9e0 net/core/skbuff.c:2131 mac80211_hwsim_tx_frame_no_nl+0xedf/0x15c0 drivers/net/wireless/virtual/mac80211_hwsim.c:1866 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2217 mac80211_hwsim_beacon_tx+0x3c4/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2317 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2347 __run_hrtimer kernel/time/hrtimer.c:1791 [inline] __hrtimer_run_queues+0x5a6/0xd40 kernel/time/hrtimer.c:1855 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1872 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:memcg_rstat_updated+0x118/0x2f0 mm/memcontrol.c:590 Code: dd 49 c1 ed 03 41 0f b6 44 15 00 84 c0 0f 85 1b 01 00 00 44 8b 23 41 01 ec 41 0f b6 44 15 00 84 c0 0f 85 2e 01 00 00 44 89 23 <41> 83 fc 40 0f 82 ce 00 00 00 4c 8d 7b 10 4d 89 fe 49 c1 ee 03 41 RSP: 0018:ffffc9000c35f038 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880b8640840 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: ffffffff8ca1b0c0 RDI: ffffffff8ca1b080 RBP: 0000000000000001 R08: ffffffff81bbdf0b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000030 R13: 1ffff110170c8108 R14: 00000000ffffffff R15: ffffffff93689020 __mod_memcg_lruvec_state+0x2c2/0x4f0 mm/memcontrol.c:771 __mod_lruvec_state mm/memcontrol.c:794 [inline] __lruvec_stat_mod_folio+0x1ab/0x300 mm/memcontrol.c:814 __folio_mod_stat mm/rmap.c:1412 [inline] __folio_remove_rmap mm/rmap.c:1777 [inline] folio_remove_rmap_ptes+0x147/0xa70 mm/rmap.c:1804 zap_present_folio_ptes mm/memory.c:1525 [inline] zap_present_ptes mm/memory.c:1586 [inline] do_zap_pte_range mm/memory.c:1687 [inline] zap_pte_range mm/memory.c:1731 [inline] zap_pmd_range mm/memory.c:1823 [inline] zap_pud_range mm/memory.c:1852 [inline] zap_p4d_range mm/memory.c:1873 [inline] unmap_page_range+0x21cf/0x44d0 mm/memory.c:1894 unmap_vmas+0x3ce/0x5f0 mm/memory.c:1984 exit_mmap+0x2bc/0xde0 mm/mmap.c:1284 __mmput+0x115/0x420 kernel/fork.c:1379 exit_mm+0x221/0x310 kernel/exit.c:589 do_exit+0x994/0x27f0 kernel/exit.c:940 do_group_exit+0x207/0x2c0 kernel/exit.c:1102 get_signal+0x1696/0x1730 kernel/signal.c:3034 arch_do_signal_or_restart+0x98/0x840 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fda5b38d169 Code: Unable to access opcode bytes at 0x7fda5b38d13f. RSP: 002b:00007fda5c252038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000007 RBX: 00007fda5b5a6160 RCX: 00007fda5b38d169 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000500 RBP: 00007fda5b40e990 R08: 0000000000000003 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fda5b5a6160 R15: 00007ffd2b7cc1e8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6391 Comm: syz.3.133 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x90 kernel/kcov.c:320 Code: 10 48 89 74 0a 18 4c 89 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 08 90 68 93 65 8b 05 b8 33 RSP: 0018:ffffc90000a07db8 EFLAGS: 00000046 RAX: ffffffff81f53591 RBX: 0000000000000000 RCX: ffff88802bc63c00 RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a07eb0 R08: ffffffff81f53581 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90000a081c0 R13: 1ffff92000141038 R14: 0000000000014000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125097000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee39b88866 CR3: 000000000eb38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff2 DR7: 0000000000000600 Call Trace: perf_prepare_sample+0x17cc/0x2190 kernel/events/core.c:8260 __perf_event_output kernel/events/core.c:8372 [inline] perf_event_output_forward+0x18d/0x540 kernel/events/core.c:8393 __perf_event_overflow+0x858/0xdd0 kernel/events/core.c:10268 perf_swevent_hrtimer+0x3b6/0x560 kernel/events/core.c:11632 __run_hrtimer kernel/time/hrtimer.c:1791 [inline] __hrtimer_run_queues+0x55c/0xd40 kernel/time/hrtimer.c:1855 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1917 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x785/0xdc0 kernel/locking/qspinlock.c:325 Code: ff 42 0f b6 04 2b 84 c0 75 6c 66 c7 84 24 b0 00 00 00 00 01 48 8b 44 24 40 42 0f b6 04 28 84 c0 75 77 41 80 3e 00 74 0c f3 90 <41> ff c4 75 d2 e9 a0 00 00 00 4c 89 f7 be 02 00 00 00 e8 34 78 fa RSP: 0018:ffffc90000a08700 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 1ffff920001410f6 RCX: ffffc90000a08701 RDX: 0000000000000100 RSI: ffffffff8e69b349 RDI: ffffffff8ca1b0e0 RBP: ffffc90000a08838 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: 00000000ffff8464 R13: dffffc0000000000 R14: ffffffff8f95b760 R15: ffffc90000a087c0 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:572 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x276/0x370 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:351 [inline] mac80211_hwsim_tx_frame_no_nl+0x91d/0x15c0 drivers/net/wireless/virtual/mac80211_hwsim.c:1817 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2217 mac80211_hwsim_beacon_tx+0x3c4/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2317 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2347 __run_hrtimer kernel/time/hrtimer.c:1791 [inline] __hrtimer_run_queues+0x5a6/0xd40 kernel/time/hrtimer.c:1855 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1872 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline] RIP: 0010:write_comp_data kernel/kcov.c:246 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x35/0x90 kernel/kcov.c:321 Code: 0c 25 08 90 68 93 65 8b 05 b8 33 a5 11 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 3c 16 00 00 00 74 4e 8b 81 18 16 00 00 <83> f8 03 75 43 48 8b 91 20 16 00 00 44 8b 89 1c 16 00 00 49 c1 e1 RSP: 0018:ffffc9000bf1f138 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffea0001e36388 RCX: ffff88802bc63c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000bf1f210 R08: ffffffff8201d652 R09: 1ffffd40003c6c68 R10: dffffc0000000000 R11: fffff940003c6c69 R12: ffffea0001e36340 R13: ffffffff93689020 R14: 1ffff920017e3e30 R15: 1ffff920017e3e2c const_folio_flags include/linux/page-flags.h:347 [inline] folio_test_unevictable include/linux/page-flags.h:631 [inline] lru_gen_inc_refs mm/swap.c:387 [inline] folio_mark_accessed+0x192/0xaa0 mm/swap.c:454 zap_present_folio_ptes mm/memory.c:1510 [inline] zap_present_ptes mm/memory.c:1586 [inline] do_zap_pte_range mm/memory.c:1687 [inline] zap_pte_range mm/memory.c:1731 [inline] zap_pmd_range mm/memory.c:1823 [inline] zap_pud_range mm/memory.c:1852 [inline] zap_p4d_range mm/memory.c:1873 [inline] unmap_page_range+0x2397/0x44d0 mm/memory.c:1894 unmap_vmas+0x3ce/0x5f0 mm/memory.c:1984 exit_mmap+0x2bc/0xde0 mm/mmap.c:1284 __mmput+0x115/0x420 kernel/fork.c:1379 exit_mm+0x221/0x310 kernel/exit.c:589 do_exit+0x994/0x27f0 kernel/exit.c:940 do_group_exit+0x207/0x2c0 kernel/exit.c:1102 get_signal+0x1696/0x1730 kernel/signal.c:3034 arch_do_signal_or_restart+0x98/0x840 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f04b938d169 Code: Unable to access opcode bytes at 0x7f04b938d13f. RSP: 002b:00007f04ba1fb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000006 RBX: 00007f04b95a5fa0 RCX: 00007f04b938d169 RDX: 0000000000000000 RSI: 0000000400000002 RDI: 0000000000000010 RBP: 00007f04b940e990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f04b95a5fa0 R15: 00007ffd82c63108