RBP: 00007ff785e32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff786016038 R14: 00007ff786015fa0 R15: 00007ffe7c70ee58 watchdog: BUG: soft lockup - CPU#0 stuck for 245s! [syz.4.4642:24797] Modules linked in: irq event stamp: 1247206 hardirqs last enabled at (1247205): [] irqentry_exit+0x180/0x670 kernel/entry/common.c:242 hardirqs last disabled at (1247206): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (1247204): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (1247204): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (1247204): [] __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723 softirqs last disabled at (1247169): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (1247169): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (1247169): [] __irq_exit_rcu+0xef/0x150 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 24797 Comm: syz.4.4642 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x583/0x1500 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 d4 63 0c 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 91 0d 00 00 8b 45 08 31 ff 83 e0 01 41 RSP: 0018:ffffc90003c0f8e0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81fc5c72 RDX: ffff888054b63d00 RSI: ffffffff81fc5c4c RDI: ffff888054b63d00 RBP: ffff8880b8540ee0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed10170a81dd R14: 0000000000000001 R15: ffff8880b843c580 FS: 0000000000000000(0000) GS:ffff88812433f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056214ba78048 CR3: 000000002d91e000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1043 __flush_tlb_multi arch/x86/include/asm/paravirt.h:57 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1382 [inline] flush_tlb_mm_range+0x45f/0x1710 arch/x86/mm/tlb.c:1472 tlb_flush arch/x86/include/asm/tlb.h:23 [inline] tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:505 [inline] tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:495 [inline] tlb_flush_mmu mm/mmu_gather.c:404 [inline] tlb_finish_mmu+0x3fe/0x810 mm/mmu_gather.c:530 exit_mmap+0x454/0xa30 mm/mmap.c:1315 __mmput+0x12a/0x410 kernel/fork.c:1175 mmput+0x67/0x80 kernel/fork.c:1198 exit_mm kernel/exit.c:581 [inline] do_exit+0x819/0x2b60 kernel/exit.c:964 __do_sys_exit kernel/exit.c:1085 [inline] __se_sys_exit kernel/exit.c:1083 [inline] __x64_sys_exit+0x42/0x50 kernel/exit.c:1083 x64_sys_call+0x152e/0x1530 arch/x86/include/generated/asm/syscalls_64.h:61 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff785d9c799 Code: Unable to access opcode bytes at 0x7ff785d9c76f. RSP: 002b:00007ff783ff5fd8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c RAX: ffffffffffffffda RBX: 00007ff786015fa0 RCX: 00007ff785d9c799 RDX: 00007ff783ff69c8 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ff785e32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff786016038 R14: 00007ff786015fa0 R15: 00007ffe7c70ee58 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 24786 Comm: syz.2.4632 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:num_possible_cpus include/linux/cpumask.h:1222 [inline] RIP: 0010:mm_get_cid kernel/sched/sched.h:3850 [inline] RIP: 0010:sched_mm_cid_fork+0x53e/0xe30 kernel/sched/core.c:10679 Code: 6c 24 28 48 b8 00 00 00 00 00 fc ff df 49 01 c7 4c 89 fd eb 5a 49 c7 c7 34 30 13 8e 41 83 e7 07 41 83 c7 03 f3 90 0f b6 45 00 <41> 38 c7 7c 08 84 c0 0f 85 ca 06 00 00 8b 35 f3 d4 3c 0c 48 89 df RSP: 0018:ffffc90004b47c50 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888029b58b90 RCX: 0000000000000001 RDX: 0000000000000002 RSI: 0000000000000002 RDI: ffff888029b58b90 RBP: fffffbfff1c26606 R08: 0000000000000001 R09: fffff52000968f7c R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000002 R14: ffff88802860db80 R15: 0000000000000007 FS: 00007fb6cc49d6c0(0000) GS:ffff88812443f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f59c7cef368 CR3: 000000007ba18000 CR4: 0000000000350ef0 Call Trace: bprm_execve fs/exec.c:1771 [inline] bprm_execve+0x53f/0x1680 fs/exec.c:1724 do_execveat_common.isra.0+0x4a5/0x580 fs/exec.c:1846 __do_sys_execveat fs/exec.c:1941 [inline] __se_sys_execveat fs/exec.c:1934 [inline] __x64_sys_execveat+0xdf/0x130 fs/exec.c:1934 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb6cb59c799 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:00007fb6cc49d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 RAX: ffffffffffffffda RBX: 00007fb6cb815fa0 RCX: 00007fb6cb59c799 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007fb6cb632c99 R08: 0000000000001000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb6cb816038 R14: 00007fb6cb815fa0 R15: 00007ffd51be46e8