watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.4:9704] Modules linked in: irq event stamp: 2402291 hardirqs last enabled at (2402290): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2402291): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2374648): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2374687): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 9704 Comm: syz-executor.4 Not tainted 6.13.0-rc3-next-20241220 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire.part.0+0x10e/0x320 Code: b6 c9 e8 35 a7 ff ff b8 ff ff ff ff 48 83 c4 28 65 0f c1 05 fc 42 b2 7e 83 f8 01 0f 85 aa 01 00 00 48 85 ed 0f 85 9b 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff88806cf09928 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff1100d9e1328 RCX: 1ffff1100d9e130d RDX: 1ffff11002b12bb0 RSI: 0000000000000001 RDI: 00000000b4a89f2a RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff0fdfbe4 R10: ffffffff87efdf27 R11: 0000000000000003 R12: ffffffff85c16c40 R13: 0000000000000000 R14: ffff888015895340 R15: ffff888015481378 FS: 00007f070fcdd700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f9e1f6a538 CR3: 000000000e4c2000 CR4: 0000000000350ef0 Call Trace: __is_insn_slot_addr+0x3f/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x38/0x50 kmem_cache_free+0x138/0x470 rcu_core+0x7c9/0x17a0 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 04 c6 ab ff 4d 85 ed 74 06 e8 ca 4b d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff888042007720 EFLAGS: 00000246 RAX: 0000000000243c1d RBX: ffffea000027c500 RCX: 1ffffffff0fe1cf9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a47796 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdfbe9 R10: ffffffff87efdf4f R11: 0000000000000000 R12: ffff88806cf40390 R13: 0000000000000200 R14: 0000000000000000 R15: ffff888009f14a68 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 jbd2__journal_start+0x193/0x6b0 __ext4_journal_start_sb+0x331/0x600 ext4_dirty_inode+0xa5/0x130 __mark_inode_dirty+0x1b6/0xd50 generic_update_time+0xcb/0xf0 touch_atime+0x4bb/0x590 ext4_file_read_iter+0x371/0x4a0 copy_splice_read+0x5c6/0xb70 do_splice_read+0x22f/0x2a0 splice_direct_to_actor+0x2a9/0x9d0 do_splice_direct+0x17a/0x250 do_sendfile+0xa7e/0xdb0 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0712767b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f070fcdd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f071287af60 RCX: 00007f0712767b19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f07127c1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000100000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcdc54062f R14: 00007f070fcdd300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: b6 c9 mov $0xc9,%dh 2: e8 35 a7 ff ff callq 0xffffa73c 7: b8 ff ff ff ff mov $0xffffffff,%eax c: 48 83 c4 28 add $0x28,%rsp 10: 65 0f c1 05 fc 42 b2 xadd %eax,%gs:0x7eb242fc(%rip) # 0x7eb24314 17: 7e 18: 83 f8 01 cmp $0x1,%eax 1b: 0f 85 aa 01 00 00 jne 0x1cb 21: 48 85 ed test %rbp,%rbp 24: 0f 85 9b 01 00 00 jne 0x1c5 * 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 31: fc ff df 34: 48 01 c3 add %rax,%rbx 37: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 3e: 48 rex.W 3f: c7 .byte 0xc7