RBP: 00007ffd765c0d5c R08: 0000000000000000 R09: 0000000000000049 R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000000f1 R13: 0000000000000049 R14: 00000000000a8076 R15: 00007ffd765c0db0 watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.7.4375:19210] Modules linked in: irq event stamp: 501306 hardirqs last enabled at (501305): [] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline] hardirqs last enabled at (501305): [] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline] hardirqs last enabled at (501305): [] irqentry_exit+0x24d/0x970 kernel/entry/common.c:164 hardirqs last disabled at (501306): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1061 softirqs last enabled at (501302): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (501302): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (501302): [] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 softirqs last disabled at (501287): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (501287): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (501287): [] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 CPU: 0 UID: 0 PID: 19210 Comm: syz.7.4375 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x58e/0x1700 kernel/smp.c:892 Code: 00 fc ff df 48 8b 54 24 08 49 89 d5 49 89 d4 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 29 84 0c 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 63 0f 00 00 8b 45 08 31 ff 83 e0 01 41 RSP: 0018:ffffc9000379f8a8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81fc0b3d RDX: ffff88801f3e8000 RSI: ffffffff81fc0b17 RDI: ffff88801f3e8000 RBP: ffff8880b85410c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed10170a8219 R14: 0000000000000001 R15: ffff8880b843c740 FS: 0000000000000000(0000) GS:ffff888124384000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f62bc7d2e9c CR3: 000000003571c000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1057 __flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline] flush_tlb_mm_range+0x45f/0x16f0 arch/x86/mm/tlb.c:1451 tlb_flush arch/x86/include/asm/tlb.h:23 [inline] tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:509 [inline] tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:499 [inline] tlb_flush_mmu mm/mmu_gather.c:423 [inline] tlb_finish_mmu+0x3fe/0x810 mm/mmu_gather.c:549 exit_mmap+0x454/0xa10 mm/mmap.c:1313 __mmput+0x12a/0x410 kernel/fork.c:1178 mmput+0x67/0x80 kernel/fork.c:1201 exit_mm kernel/exit.c:582 [inline] do_exit+0x8b2/0x2af0 kernel/exit.c:964 do_group_exit+0xd5/0x2a0 kernel/exit.c:1119 __do_sys_exit_group kernel/exit.c:1130 [inline] __se_sys_exit_group kernel/exit.c:1128 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1128 x64_sys_call+0x102c/0x1530 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4d6719ce59 Code: Unable to access opcode bytes at 0x7f4d6719ce2f. RSP: 002b:00007ffd765c0cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4d6719ce59 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffd765c0d5c R08: 0000000000000000 R09: 0000000000000049 R10: 0000000000000001 R11: 0000000000000246 R12: 00000000000000f1 R13: 0000000000000049 R14: 00000000000a8076 R15: 00007ffd765c0db0 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5628 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:taprio_set_budgets+0x26/0x310 net/sched/sch_taprio.c:666 Code: 90 90 90 90 41 57 41 56 41 55 49 89 d5 41 54 55 53 48 89 fb 48 83 ec 38 48 89 7c 24 18 48 89 34 24 e8 be 0f 70 f8 48 8d 7b 08 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f RSP: 0018:ffffc90000a08d68 EFLAGS: 00000046 RAX: 0000000000010202 RBX: ffff8880343f3280 RCX: 1ffff1100fb072a6 RDX: ffff888066215d00 RSI: ffffffff89987f82 RDI: ffff8880343f3288 RBP: ffff88807d839400 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88807d839c00 R14: ffff88807d839c00 R15: ffff88807d839c00 FS: 000055558ef8e500(0000) GS:ffff888124484000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8cff5e8158 CR3: 00000000694bd000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: advance_sched+0x66e/0xd20 net/sched/sch_taprio.c:984 __run_hrtimer kernel/time/hrtimer.c:1930 [inline] __hrtimer_run_queues+0x470/0xa00 kernel/time/hrtimer.c:1994 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2113 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] __sysvec_apic_timer_interrupt+0x10b/0x460 arch/x86/kernel/apic/apic.c:1067 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:srso_alias_safe_ret+0x5/0x7 arch/x86/lib/retpoline.S:213 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8d 64 24 08 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc RSP: 0018:ffffc90002f3fcc8 EFLAGS: 00000207 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000003b08c5 RDX: 00000000003b08c6 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888066215d00 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: ffff888067a94e12 R13: ffff888067a94e60 R14: 0000000000000007 R15: ffff888067a94e80 get_lock_parent_ip include/linux/ftrace.h:1171 [inline] __local_bh_disable_ip+0xab/0xd0 kernel/softirq.c:395 __raw_write_lock_bh include/linux/rwlock_api_smp.h:220 [inline] _raw_write_lock_bh+0x17/0x40 kernel/locking/spinlock.c:338 sock_orphan include/net/sock.h:2128 [inline] __tcp_close+0x4d6/0x1110 net/ipv4/tcp.c:3230 tcp_close+0x28/0x110 net/ipv4/tcp.c:3313 inet_release+0xed/0x200 net/ipv4/af_inet.c:442 __sock_release+0xb3/0x260 net/socket.c:722 sock_close+0x1c/0x30 net/socket.c:1514 __fput+0x3ff/0xb50 fs/file_table.c:510 fput_close_sync+0x118/0x250 fs/file_table.c:615 __do_sys_close fs/open.c:1507 [inline] __se_sys_close fs/open.c:1492 [inline] __x64_sys_close+0x8b/0x120 fs/open.c:1492 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8cff35d68e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffe3c0da028 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 000055558ef8e500 RCX: 00007f8cff35d68e RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffe3c0da0cc R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000345 R13: 00000000000927c0 R14: 00000000000a8c64 R15: 00007ffe3c0da120