------------[ cut here ]------------ lockdep bfs error:-1 WARNING: CPU: 1 PID: 19123 at kernel/locking/lockdep.c:2087 print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2087 Modules linked in: CPU: 1 UID: 0 PID: 19123 Comm: syz-executor.5 Not tainted 6.10.0-next-20240726-syzkaller-13921-g668d33c9ff92 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2087 Code: 90 90 90 90 90 90 55 53 89 fb e8 47 40 3d 03 89 c5 e8 00 1a ff ff 85 ed 74 14 90 48 c7 c7 c0 ec 0a 8c 89 de e8 4d 45 e5 ff 90 <0f> 0b 90 90 5b 5d c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000ba96e88 EFLAGS: 00010046 RAX: 7c34a05a065aa200 RBX: 00000000ffffffff RCX: ffff888072958000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff815592b2 R09: 1ffff1101726519a R10: dffffc0000000000 R11: ffffed101726519b R12: dffffc0000000001 R13: ffffffff948db158 R14: ffffffff934851c8 R15: ffffffff948db0e8 FS: 00007f49055496c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0f502d56c6 CR3: 000000001f27e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_irq_usage kernel/locking/lockdep.c:2826 [inline] check_prev_add kernel/locking/lockdep.c:3162 [inline] check_prevs_add kernel/locking/lockdep.c:3277 [inline] validate_chain+0x4809/0x5920 kernel/locking/lockdep.c:3901 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5199 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5822 do_write_seqcount_begin_nested include/linux/seqlock.h:469 [inline] do_write_seqcount_begin include/linux/seqlock.h:495 [inline] psi_account_irqtime+0x2f7/0x750 kernel/sched/psi.c:1027 __schedule+0x8f1/0x4a60 kernel/sched/core.c:6597 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826 Code: 2b 00 74 08 4c 89 f7 e8 aa 9e 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc9000ba97820 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92001752f10 RCX: 7c34a05a065aa200 RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c607cc0 RBP: ffffc9000ba97968 R08: ffffffff947d7567 R09: 1ffffffff28faeac R10: dffffc0000000000 R11: fffffbfff28faead R12: 1ffff92001752f0c R13: dffffc0000000000 R14: ffffc9000ba97880 R15: 0000000000000246 touch_wq_lockdep_map kernel/workqueue.c:3876 [inline] __flush_workqueue+0x1c9/0x1710 kernel/workqueue.c:3918 drain_workqueue+0xc9/0x3a0 kernel/workqueue.c:4082 destroy_workqueue+0xba/0xc40 kernel/workqueue.c:5781 ceph_osdc_stop+0x44/0x3a0 net/ceph/osd_client.c:5319 ceph_destroy_client+0x68/0x130 net/ceph/ceph_common.c:767 destroy_fs_client+0x192/0x270 fs/ceph/super.c:899 deactivate_locked_super+0xc4/0x130 fs/super.c:473 ceph_get_tree+0x9a9/0x17b0 fs/ceph/super.c:1362 vfs_get_tree+0x90/0x2a0 fs/super.c:1800 vfs_cmd_create+0xa0/0x1f0 fs/fsopen.c:226 __do_sys_fsconfig fs/fsopen.c:473 [inline] __se_sys_fsconfig+0xa25/0xf80 fs/fsopen.c:345 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f490487cda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f49055490c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007f49049abf80 RCX: 00007f490487cda9 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003 RBP: 00007f49048c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f49049abf80 R15: 00007fff08f9a718 ---------------- Code disassembly (best guess): 0: 2b 00 sub (%rax),%eax 2: 74 08 je 0xc 4: 4c 89 f7 mov %r14,%rdi 7: e8 aa 9e 8b 00 call 0x8b9eb6 c: f6 44 24 61 02 testb $0x2,0x61(%rsp) 11: 0f 85 85 01 00 00 jne 0x19c 17: 41 f7 c7 00 02 00 00 test $0x200,%r15d 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp) 28: e0 45 * 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction 31: 00 00 33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1) 3a: 00 00 3c: 43 rex.XB 3d: c7 .byte 0xc7 3e: 44 rex.R 3f: 25 .byte 0x25