watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kcompactd0:29] Modules linked in: irq event stamp: 92 hardirqs last enabled at (91): [] _raw_spin_unlock_irqrestore+0x28/0x60 hardirqs last disabled at (92): [] __schedule+0x11dd/0x24a0 softirqs last enabled at (0): [] copy_process+0x1dfe/0x6df0 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 1 PID: 29 Comm: kcompactd0 Tainted: G B 6.0.0-rc4-next-20220908 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:smp_call_function_many_cond+0x46d/0xcc0 Code: 31 ff 83 e5 01 89 ee e8 c1 4a 0a 00 85 ed 74 43 4d 89 ec 4c 89 ed 49 c1 ec 03 83 e5 07 4d 01 fc 83 c5 03 e8 f5 4d 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 ac 06 00 00 8b 43 08 31 RSP: 0018:ffff888009097428 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff88806ce3eda0 RCX: 0000000000000000 RDX: ffff888008791ac0 RSI: ffffffff813bd61b RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffed100d9c7db5 R13: ffff88806ce3eda8 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffb7d752b11 CR3: 0000000005226000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x56/0xa0 kvm_flush_tlb_multi+0x294/0x3a0 flush_tlb_mm_range+0x2f2/0x410 ptep_clear_flush+0x12f/0x160 try_to_migrate_one+0x57a/0x19b0 rmap_walk_file+0x3d7/0x7f0 try_to_migrate+0x1c5/0x200 migrate_pages+0x7df/0x3740 compact_zone+0x1a8e/0x35f0 kcompactd_do_work+0x454/0x9d0 kcompactd+0xb0f/0xe00 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 16789 Comm: syz-executor Tainted: G B 6.0.0-rc4-next-20220908 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:kasan_report+0x15/0x1c0 Code: 61 ff ff ff 48 83 c4 60 5b 5d 41 5c e9 b4 cf e7 02 0f 1f 40 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 68 9c 8f 04 24 0f 01 ca <65> 4c 8b 3c 25 c0 6e 02 00 41 8b 87 f8 13 00 00 85 c0 0f 85 34 01 RSP: 0018:ffff8880462e7958 EFLAGS: 00000092 RAX: 00000000000000fa RBX: 000000004ceeb440 RCX: ffffffff8425cbbd RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88800eb1c000 RBP: ffff88800eb1c000 R08: 0000000000000000 R09: ffff88800eb1c003 R10: ffffed1001d63800 R11: 0000000000000001 R12: 0000000000000003 R13: ffffed1001d63800 R14: 0000000000000001 R15: 1ffff11008c5cf40 FS: 00005555560c0400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056074fa10648 CR3: 0000000048182000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: queued_spin_lock_slowpath+0xadd/0xc80 do_raw_spin_lock+0x1dc/0x260 kmemleak_scan+0x21d/0x16f0 kmemleak_write+0x570/0x680 full_proxy_write+0x11d/0x190 vfs_write+0x2cb/0xd90 ksys_write+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7faccb8365c3 Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 RSP: 002b:00007fff516ef7c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fff516efe08 RCX: 00007faccb8365c3 RDX: 0000000000000004 RSI: 00007faccb8eced9 RDI: 0000000000000003 RBP: 0000000000000002 R08: 0000000000000a66 R09: 00007fff517cf080 R10: 00007fff517cf090 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff516ef8a0 R14: 0000000000000000 R15: 0000000000000003 ---------------- Code disassembly (best guess): 0: 31 ff xor %edi,%edi 2: 83 e5 01 and $0x1,%ebp 5: 89 ee mov %ebp,%esi 7: e8 c1 4a 0a 00 callq 0xa4acd c: 85 ed test %ebp,%ebp e: 74 43 je 0x53 10: 4d 89 ec mov %r13,%r12 13: 4c 89 ed mov %r13,%rbp 16: 49 c1 ec 03 shr $0x3,%r12 1a: 83 e5 07 and $0x7,%ebp 1d: 4d 01 fc add %r15,%r12 20: 83 c5 03 add $0x3,%ebp 23: e8 f5 4d 0a 00 callq 0xa4e1d 28: f3 90 pause * 2a: 41 0f b6 04 24 movzbl (%r12),%eax <-- trapping instruction 2f: 40 38 c5 cmp %al,%bpl 32: 7c 08 jl 0x3c 34: 84 c0 test %al,%al 36: 0f 85 ac 06 00 00 jne 0x6e8 3c: 8b 43 08 mov 0x8(%rbx),%eax 3f: 31 .byte 0x31