watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:10714] Modules linked in: irq event stamp: 8771181 hardirqs last enabled at (8771180): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (8771181): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (8682630): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (8682633): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 10714 Comm: syz-executor.0 Not tainted 6.1.0-next-20221213 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 Code: 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 2d 5f ba 7e 89 c1 48 8b 34 24 <81> e1 00 01 00 00 65 48 8b 14 25 00 89 03 00 a9 00 01 ff 00 74 0e RSP: 0018:ffff88806ce09a00 EFLAGS: 00000293 RAX: 0000000000000100 RBX: 0000000000000001 RCX: 0000000000000100 RDX: 0000000000000000 RSI: ffffffff8149a755 RDI: ffff88801c3483f4 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8564e828 R15: ffff88800844f780 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c2f511fa78 CR3: 0000000005426000 CR4: 0000000000350ef0 DR0: 0000000020000040 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __is_insn_slot_addr+0x135/0x250 kernel_text_address+0x48/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 rcu_core+0x7be/0x19c0 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:release_pages+0x1cf/0x1040 Code: 85 65 0c 00 00 48 8b 5d 00 49 89 df 49 83 e7 fc 49 8d 7f 08 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 5e 0c 00 00 49 8b 47 08 <31> ff 49 89 c4 48 89 44 24 10 41 83 e4 01 4c 89 e6 e8 3b 59 e6 ff RSP: 0018:ffff888046ab7588 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffea00009194c0 RCX: 0000000000000000 RDX: ffff88801c348000 RSI: ffffffff8162cca8 RDI: ffffea00009194c8 RBP: ffff88800d5a2668 R08: 0000000000000004 R09: 00000000000001fe R10: 00000000000000cb R11: 0000000000000001 R12: 0000000000000007 R13: dffffc0000000000 R14: 00000000000000cb R15: ffffea00009194c0 tlb_batch_pages_flush+0xa8/0x1b0 unmap_page_range+0x164b/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2760 do_group_exit+0xd4/0x2a0 get_signal+0x21b7/0x22f0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f38896dab19 Code: Unable to access opcode bytes at 0x7f38896daaef. RSP: 002b:00007f3886c50188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000004 RBX: 00007f38897edf60 RCX: 00007f38896dab19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f3889734f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd668f15af R14: 00007f3886c50300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 7: 00 00 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: f3 0f 1e fa endbr64 1d: 65 8b 05 2d 5f ba 7e mov %gs:0x7eba5f2d(%rip),%eax # 0x7eba5f51 24: 89 c1 mov %eax,%ecx 26: 48 8b 34 24 mov (%rsp),%rsi * 2a: 81 e1 00 01 00 00 and $0x100,%ecx <-- trapping instruction 30: 65 48 8b 14 25 00 89 mov %gs:0x38900,%rdx 37: 03 00 39: a9 00 01 ff 00 test $0xff0100,%eax 3e: 74 0e je 0x4e