RBP: 00007ffd0d144a9c R08: 0000000000000000 R09: 0000000000000001 R10: 000055558bc807d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000000927c0 R14: 000000000009019c R15: 00007ffd0d144af0 watchdog: BUG: soft lockup - CPU#1 stuck for 243s! [syz-executor:5626] Modules linked in: irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x288a/0x7ff0 kernel/fork.c:2233 softirqs last enabled at (0): [] copy_process+0x28de/0x7ff0 kernel/fork.c:2234 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 1 UID: 0 PID: 5626 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 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+0x589/0x16c0 kernel/smp.c:892 Code: b8 00 00 00 00 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 a9 95 0c 00 f3 90 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 2c 0f 00 00 8b 45 08 31 RSP: 0018:ffffc90003b5f618 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81fca87d RDX: ffff88802cbe3e00 RSI: ffffffff81fca857 RDI: ffff88802cbe3e00 RBP: ffff8880b8443360 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed101708866d R14: 0000000000000001 R15: ffff8880b853c840 FS: 000055558bc80500(0000) GS:ffff888124419000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5fef456b8 CR3: 000000005c457000 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 dup_mmap+0x1307/0x21b0 mm/mmap.c:1905 dup_mm kernel/fork.c:1538 [inline] copy_mm kernel/fork.c:1590 [inline] copy_process+0x4588/0x7ff0 kernel/fork.c:2288 kernel_clone+0x176/0x9d0 kernel/fork.c:2746 __do_sys_clone+0xd9/0x120 kernel/fork.c:2887 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: 0033:0x7fe5fe1c58d2 Code: 89 e7 e8 71 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:00007ffd0d144910 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffd0d144910 RCX: 00007fe5fe1c58d2 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffd0d144a9c R08: 0000000000000000 R09: 0000000000000001 R10: 000055558bc807d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000000927c0 R14: 000000000009019c R15: 00007ffd0d144af0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 10990 Comm: syz.6.1170 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:srso_alias_safe_ret+0x0/0x7 arch/x86/lib/retpoline.S:210 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 cc cc cc cc cc <48> 8d 64 24 08 c3 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc RSP: 0018:ffffc90000007ce8 EFLAGS: 00000086 RAX: 0000000000000000 RBX: ffffffff9b418b38 RCX: 1ffff1100ece93a6 RDX: ffffffff8bb2f940 RSI: ffffffff8c1e6600 RDI: ffffffff8c1e6640 RBP: ffffffff85086071 R08: 0000000000000001 R09: fffff52000000f9c R10: 0000000000000012 R11: 0000000000000001 R12: 0000000000000002 R13: ffff888054765300 R14: dffffc0000000000 R15: 1ffff92000000fb2 FS: 00007f4b9ddf66c0(0000) GS:ffff888124319000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fce6ed456b8 CR3: 000000001ffc4000 CR4: 0000000000350ef0 Call Trace: srso_alias_return_thunk+0x5/0xfbef5 arch/x86/lib/retpoline.S:220 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c:752 trace_lock_release include/trace/events/lock.h:68 [inline] lock_release+0x24d/0x310 kernel/locking/lockdep.c:5879 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_irqrestore+0x1a/0x80 kernel/locking/spinlock.c:198 debug_object_activate+0x331/0x490 lib/debugobjects.c:891 debug_hrtimer_activate kernel/time/hrtimer.c:485 [inline] debug_activate kernel/time/hrtimer.c:528 [inline] enqueue_hrtimer+0x75/0x2f0 kernel/time/hrtimer.c:1109 __run_hrtimer kernel/time/hrtimer.c:2048 [inline] __hrtimer_run_queues+0x6ed/0x9c0 kernel/time/hrtimer.c:2096 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2215 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline] __sysvec_apic_timer_interrupt+0x109/0x470 arch/x86/kernel/apic/apic.c:1068 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:consume_skb+0x67/0x110 net/core/skbuff.c:1440 Code: 89 ee e8 7c 54 a6 f8 85 ed 0f 8e 93 00 00 00 e8 ff 59 a6 f8 89 ee bf 01 00 00 00 e8 63 54 a6 f8 83 fd 01 74 0e e8 e9 59 a6 f8 <5b> 5d 41 5c e9 eb 5c ad f7 e8 db 59 a6 f8 48 8b 74 24 18 48 89 df RSP: 0018:ffffc900077ef850 EFLAGS: 00000246 RAX: 0000000000080000 RBX: ffff88802a304140 RCX: ffffc90022c25000 RDX: 0000000000080000 RSI: ffffffff8962e417 RDI: ffff888032095d00 RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: ffff88802a304224 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88802a304140 __unix_dgram_recvmsg+0x754/0xc30 net/unix/af_unix.c:2664 unix_dgram_recvmsg+0xcd/0x100 net/unix/af_unix.c:2681 sock_recvmsg_nosec net/socket.c:1126 [inline] ____sys_recvmsg+0x5eb/0x670 net/socket.c:2902 ___sys_recvmsg+0x16a/0x1a0 net/socket.c:2946 do_recvmmsg+0x2f3/0x740 net/socket.c:3041 __sys_recvmmsg net/socket.c:3115 [inline] __do_sys_recvmmsg net/socket.c:3138 [inline] __se_sys_recvmmsg net/socket.c:3131 [inline] __x64_sys_recvmmsg+0x22a/0x280 net/socket.c:3131 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: 0033:0x7f4b9fb9ce59 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:00007f4b9ddf6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f4b9fe16090 RCX: 00007f4b9fb9ce59 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004 RBP: 00007f4b9fc32e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4b9fe16128 R14: 00007f4b9fe16090 R15: 00007ffe57593d08