watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.6:18386] Modules linked in: irq event stamp: 2638465 hardirqs last enabled at (2638464): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2638465): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2582214): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2582217): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 18386 Comm: syz-executor.6 Not tainted 6.13.0-rc1-next-20241205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x45/0xf0 Code: 00 00 49 89 fd 4c 39 e7 0f 87 a2 00 00 00 49 bf 00 00 00 00 00 fc ff df 49 89 fe 48 89 fd eb 0c 48 8d 6b 04 49 89 de 4c 39 e5 <77> 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 RSP: 0018:ffff88806cf09970 EFLAGS: 00000293 RAX: ffffffff818ba030 RBX: ffffffff864c70d0 RCX: ffffffff818ba053 RDX: 0000000000000000 RSI: ffffffff8683de74 RDI: ffffffff864c70c8 RBP: ffffffff864c70d4 R08: ffffffff8683de74 R09: ffff88806cf09a68 R10: 000000000003c001 R11: 0000000000023d42 R12: ffffffff864c70dc R13: ffffffff864c70c8 R14: ffffffff864c70d0 R15: dffffc0000000000 FS: 00007f85ed2f8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f11e91b7e60 CR3: 000000002b352000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b7/0x2490 arch_stack_walk+0x87/0xf0 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 kfree+0x132/0x480 slab_free_after_rcu_debug+0x6f/0x290 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: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 cc 5b d2 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:ffff88803e46f598 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff11007c8deb6 RCX: 1ffff11007c8de9b RDX: 1ffff11007c0c838 RSI: 0000000000000001 RDI: 0000000051625dd7 RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff0fde3e4 R10: ffffffff87ef1f27 R11: 00000000000c3afd R12: ffffffff85c16340 R13: 0000000000000000 R14: ffff88803e063780 R15: ffff88802d092800 __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 kfree+0x132/0x480 __free_slab+0x10d/0x130 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_kmalloc+0x6f/0x90 shrinker_alloc+0xae/0xad0 alloc_super+0x841/0xb80 sget+0x113/0x6e0 mount_nodev+0x32/0x120 legacy_get_tree+0x109/0x220 vfs_get_tree+0x93/0x340 vfs_cmd_create+0xd7/0x2a0 __do_sys_fsconfig+0xa35/0xb50 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f85efd82b19 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:00007f85ed2f8188 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007f85efe95f60 RCX: 00007f85efd82b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006 RBP: 00007f85efddcf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe11960bbf R14: 00007f85ed2f8300 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: 00 00 add %al,(%rax) 2: 49 89 fd mov %rdi,%r13 5: 4c 39 e7 cmp %r12,%rdi 8: 0f 87 a2 00 00 00 ja 0xb0 e: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15 15: fc ff df 18: 49 89 fe mov %rdi,%r14 1b: 48 89 fd mov %rdi,%rbp 1e: eb 0c jmp 0x2c 20: 48 8d 6b 04 lea 0x4(%rbx),%rbp 24: 49 89 de mov %rbx,%r14 27: 4c 39 e5 cmp %r12,%rbp * 2a: 77 4d ja 0x79 <-- trapping instruction 2c: 4c 89 e0 mov %r12,%rax 2f: 48 29 e8 sub %rbp,%rax 32: 48 89 c2 mov %rax,%rdx 35: 48 c1 e8 3f shr $0x3f,%rax 39: 48 c1 fa 02 sar $0x2,%rdx 3d: 48 01 d0 add %rdx,%rax