watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.0.959:3574]
Modules linked in:
CPU: 1 PID: 3574 Comm: syz.0.959 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8c3/0x9f0 kernel/smp.c:969
Code: 84 c0 0f 85 9d 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 90 37 0a 00 83 e3 01 48 8b 5c 24 10 75 07 e8 d1 33 0a 00 eb 42 f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 10 41 f7
RSP: 0018:ffffc900012a7220 EFLAGS: 00000246
RAX: ffffffff815e8b05 RBX: ffff8881f7138e80 RCX: 0000000000080000
RDX: ffffc9000136b000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900012a7328 R08: dffffc0000000000 R09: ffffc900012a7160
R10: fffff52000254e2e R11: 1ffff92000254e2c R12: 1ffff1103ee271d0
R13: 1ffff1103ee07af9 R14: 0000000000000000 R15: ffff8881f703d7c8
FS:  00007fe7197be6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000132664000 CR4: 00000000003506a0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1135
 on_each_cpu include/linux/smp.h:71 [inline]
 flush_tlb_kernel_range+0x43/0x240 arch/x86/mm/tlb.c:1074
 __purge_vmap_area_lazy+0x1ad/0x1840 mm/vmalloc.c:1702
 _vm_unmap_aliases+0x2fd/0x380 mm/vmalloc.c:2126
 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:2149
 change_page_attr_set_clr+0x311/0xc10 arch/x86/mm/pat/set_memory.c:1740
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
 set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1943
 bpf_jit_binary_lock_ro include/linux/filter.h:899 [inline]
 bpf_int_jit_compile+0xc493/0xcc60 arch/x86/net/bpf_jit_comp.c:2478
 bpf_prog_select_runtime+0x6f1/0x9f0 kernel/bpf/core.c:1934
 bpf_prog_load+0x106d/0x1550 kernel/bpf/syscall.c:2332
 __sys_bpf+0x4c3/0x730 kernel/bpf/syscall.c:4633
 __do_sys_bpf kernel/bpf/syscall.c:4737 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4735 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:4735
 x64_sys_call+0x4b9/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe71ad55ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe7197be038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fe71afacfa0 RCX: 00007fe71ad55ec9
RDX: 0000000000000094 RSI: 00002000000002c0 RDI: 0000000000000005
RBP: 00007fe71add8f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe71afad038 R14: 00007fe71afacfa0 R15: 00007ffc34ec9d28
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3572 Comm: syz.4.958 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline]
RIP: 0010:kvm_wait+0xcc/0x140 arch/x86/kernel/kvm.c:912
Code: 20 f6 44 24 21 02 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 a6 66 90 0f 00 2d e5 91 d6 03 f4 <eb> 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90000c67740 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff88810d8d57ec RCX: ffffffff814f4259
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88810d8d57ec
RBP: ffffc90000c677d0 R08: dffffc0000000000 R09: ffffed1021b1aafe
R10: ffffed1021b1aafe R11: 1ffff11021b1aafd R12: 1ffff1103ee00001
R13: ffff8881f7038ad4 R14: dffffc0000000000 R15: 1ffff9200018cee8
FS:  00007f7cc140b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002a9000 CR3: 0000000110340000 CR4: 00000000003506b0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x60f/0x9c0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:129 [inline]
 _raw_spin_lock_irq+0xd9/0xe0 kernel/locking/spinlock.c:170
 get_wchan kernel/sched/core.c:2021 [inline]
 perf_trace_sched_blocked_reason+0x243/0x4a0 include/trace/events/sched.h:490
 trace_sched_blocked_reason include/trace/events/sched.h:490 [inline]
 try_to_wake_up+0xea1/0x1160 kernel/sched/core.c:4190
 wake_up_process kernel/sched/core.c:4348 [inline]
 wake_up_q+0xdf/0x1c0 kernel/sched/core.c:975
 rwsem_wake+0x102/0x1f0 kernel/locking/rwsem.c:1276
 __up_write kernel/locking/rwsem.c:1443 [inline]
 up_write+0xb3/0x290 kernel/locking/rwsem.c:1692
 inode_unlock include/linux/fs.h:811 [inline]
 generic_file_write_iter+0xb4/0x1d0 mm/filemap.c:4031
 call_write_iter include/linux/fs.h:2212 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x802/0xf70 fs/read_write.c:594
 ksys_write+0x140/0x240 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
 x64_sys_call+0x8ef/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7cc29a2ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7cc140b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7cc2bf9fa0 RCX: 00007f7cc29a2ec9
RDX: 00000000002a979d RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f7cc2a25f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7cc2bfa038 R14: 00007f7cc2bf9fa0 R15: 00007ffe7a0f26c8
 </TASK>