RBP: 00007ffc9472ebfc R08: 0000000000000000 R09: 0000000000000001 R10: 000055556efc27d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000000927c0 R14: 000000000013bccf R15: 00007ffc9472ec50 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz-executor:12541] Modules linked in: irq event stamp: 2012830 hardirqs last enabled at (2012829): [] irqentry_exit+0x180/0x670 kernel/entry/common.c:219 hardirqs last disabled at (2012830): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (2012826): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (2012826): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (2012826): [] __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723 softirqs last disabled at (2012589): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (2012589): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (2012589): [] __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 12541 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x57b/0x14a0 kernel/smp.c:877 Code: 00 fc ff df 48 8b 54 24 10 49 89 d5 49 89 d4 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 4c 56 0c 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 3f 0d 00 00 8b 45 08 31 ff 83 e0 01 41 RSP: 0018:ffffc9000b2cf710 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81fa87fa RDX: ffff888028a95b80 RSI: ffffffff81fa87d4 RDI: ffff888028a95b80 RBP: ffff8880b8443020 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed1017088605 R14: 0000000000000001 R15: ffff8880b853c040 FS: 000055556efc2500(0000) GS:ffff8881246dc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3ff7ad CR3: 0000000031e39000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1043 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1382 [inline] flush_tlb_mm_range+0x45f/0x1710 arch/x86/mm/tlb.c:1472 dup_mmap+0xd01/0x1e20 mm/mmap.c:1866 dup_mm kernel/fork.c:1529 [inline] copy_mm kernel/fork.c:1581 [inline] copy_process+0x7451/0x7890 kernel/fork.c:2221 kernel_clone+0xfc/0x930 kernel/fork.c:2651 __do_sys_clone+0xd9/0x120 kernel/fork.c:2792 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f236bbc3a12 Code: 89 e7 e8 f1 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffc9472ea70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffc9472ea70 RCX: 00007f236bbc3a12 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffc9472ebfc R08: 0000000000000000 R09: 0000000000000001 R10: 000055556efc27d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000000927c0 R14: 000000000013bccf R15: 00007ffc9472ec50 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 14604 Comm: syz.7.1585 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:_find_first_zero_bit+0x48/0x80 lib/find_bit.c:149 Code: eb 0d 48 83 c3 40 48 83 c7 08 48 39 c3 73 25 48 89 fa 48 c1 ea 03 80 3c 2a 00 75 28 48 8b 17 48 83 f2 ff 74 dd f3 48 0f bc d2 <48> 01 d3 48 39 d8 48 0f 47 c3 48 83 c4 10 5b 5d e9 5e 68 2b fc e9 RSP: 0018:ffffc9000f077cc8 EFLAGS: 00000002 RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000002 RDI: ffff888033b4f9d0 RBP: dffffc0000000000 R08: 0000000000000001 R09: fffff52001e0ef90 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000007 R13: ffff888033b4efb8 R14: 0000000000000002 R15: 0000000000000002 FS: 00007fde03ff26c0(0000) GS:ffff8881245dc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3490aff8 CR3: 0000000078407000 CR4: 0000000000350ef0 Call Trace: find_first_zero_bit include/linux/find.h:393 [inline] __mm_get_cid kernel/sched/sched.h:3767 [inline] mm_get_cid kernel/sched/sched.h:3782 [inline] sched_mm_cid_fork+0x54f/0xcd0 kernel/sched/core.c:10645 bprm_execve fs/exec.c:1776 [inline] bprm_execve+0x53f/0x1620 fs/exec.c:1729 do_execveat_common.isra.0+0x4dc/0x5b0 fs/exec.c:1859 do_execveat fs/exec.c:1944 [inline] __do_sys_execveat fs/exec.c:2018 [inline] __se_sys_execveat fs/exec.c:2012 [inline] __x64_sys_execveat+0xda/0x120 fs/exec.c:2012 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fde0319af79 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fde03ff2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 RAX: ffffffffffffffda RBX: 00007fde03415fa0 RCX: 00007fde0319af79 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007fde032316e0 R08: 0000000000001000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fde03416038 R14: 00007fde03415fa0 R15: 00007fffb57bb098