kthread+0x346/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.5.856:3708] Modules linked in: CPU: 0 PID: 3708 Comm: syz.5.856 Not tainted 5.10.236-syzkaller-00012-gab07aeb2c93d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__sanitizer_cov_trace_pc+0x49/0x60 kernel/kcov.c:203 Code: f7 c2 00 01 00 00 74 35 83 b9 dc 0a 00 00 00 74 2c 8b 91 b8 0a 00 00 83 fa 02 75 21 48 8b 91 c0 0a 00 00 48 8b 32 48 8d 7e 01 <8b> 89 bc 0a 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a 5d c3 66 RSP: 0018:ffffc900038a71f0 EFLAGS: 00000246 RAX: ffffffff815921b8 RBX: 0000000000000000 RCX: ffff888118cbbb40 RDX: ffffc9000dec9000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc900038a71f0 R08: dffffc0000000000 R09: ffffed103ee2aec9 R10: ffffed103ee2aec9 R11: 1ffff1103ee2aec8 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff92000714e44 FS: 00007fb388e616c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000112358000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:229 [inline] smp_call_function_single+0x208/0x470 kernel/smp.c:517 smp_call_function_many_cond+0x8f2/0x9e0 kernel/smp.c:653 smp_call_function_many kernel/smp.c:716 [inline] smp_call_function kernel/smp.c:738 [inline] on_each_cpu+0xab/0x170 kernel/smp.c:837 flush_tlb_kernel_range+0x3a/0x1c0 arch/x86/mm/tlb.c:950 __purge_vmap_area_lazy+0xea/0x1470 mm/vmalloc.c:1355 _vm_unmap_aliases+0x2f8/0x380 mm/vmalloc.c:1773 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:1796 change_page_attr_set_clr+0x311/0xc10 arch/x86/mm/pat/set_memory.c:1732 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1789 [inline] set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1935 bpf_jit_binary_lock_ro include/linux/filter.h:842 [inline] bpf_int_jit_compile+0x860b/0x8ae0 arch/x86/net/bpf_jit_comp.c:2130 bpf_prog_select_runtime+0x742/0x9e0 kernel/bpf/core.c:1876 bpf_prog_load+0xf85/0x1420 kernel/bpf/syscall.c:2235 __do_sys_bpf kernel/bpf/syscall.c:4432 [inline] __se_sys_bpf+0x442/0x680 kernel/bpf/syscall.c:4388 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:4388 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fb38a819969 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:00007fb388e61038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fb38aa41080 RCX: 00007fb38a819969 RDX: 0000000000000094 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fb38a89bab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb38aa41080 R15: 00007ffc737158c8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3748 Comm: syz.7.865 Not tainted 5.10.236-syzkaller-00012-gab07aeb2c93d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:preempt_count_add+0x42/0x1b0 kernel/sched/core.c:4464 Code: c7 86 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 01 01 00 00 83 3d ae 7c 83 05 00 75 07 65 8b 05 31 71 be 7e 65 01 3d 2a 71 be 7e <48> c7 c0 00 79 c7 86 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 fc 00 RSP: 0018:ffffc90000e87c98 EFLAGS: 00000082 RAX: 0000000080000001 RBX: ffffffff86d06fc0 RCX: ffffffff86c77903 RDX: 0000000000000000 RSI: 0000000000000802 RDI: 0000000000000001 RBP: ffffc90000e87cb0 R08: 0000000000000004 R09: 0000000000000003 R10: fffff520001d0f9c R11: 1ffff920001d0f9c R12: 1ffff920001d0f98 R13: dffffc0000000000 R14: 0000000000000802 R15: dffffc0000000000 FS: 0000555576324500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000040 CR3: 0000000115aa5000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:109 [inline] _raw_spin_lock_irqsave+0x8e/0x110 kernel/locking/spinlock.c:159 vga_put drivers/gpu/vga/vgaarb.c:578 [inline] vga_arb_release+0x20e/0x930 drivers/gpu/vga/vgaarb.c:1370 __fput+0x2fb/0x770 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x127/0x190 kernel/task_work.c:189 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0x68/0x90 kernel/entry/common.c:274 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fad01960969 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:00007ffcfc331208 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fad01b89ba0 RCX: 00007fad01960969 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fad01b89ba0 R08: 0000000000000000 R09: 00000028fc3314ff R10: 000000000003fc4c R11: 0000000000000246 R12: 0000000000023dd6 R13: 00007fad01b88080 R14: ffffffffffffffff R15: 00007ffcfc331320