Warning: Permanently added '[localhost]:9793' (ED25519) to the list of known hosts. executing program syzkaller login: [ 95.006069][ T5096] loop0: detected capacity change from 0 to 32768 [ 95.110212][ T5096] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,compression=lz4,norecovery,recovery_pass_last=journal_replay,nojournal_transaction_names,nocow [ 95.116818][ T5096] [ 95.118101][ T5096] ============================================ [ 95.122933][ T5096] WARNING: possible recursive locking detected [ 95.125428][ T5096] 6.12.0-rc3-syzkaller-00007-g6485cf5ea253 #0 Not tainted [ 95.129395][ T5096] -------------------------------------------- [ 95.132089][ T5096] syz-executor179/5096 is trying to acquire lock: [ 95.134802][ T5096] ffff888040700908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 95.139403][ T5096] [ 95.139403][ T5096] but task is already holding lock: [ 95.142849][ T5096] ffff888040700908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 95.146999][ T5096] [ 95.146999][ T5096] other info that might help us debug this: [ 95.150229][ T5096] Possible unsafe locking scenario: [ 95.150229][ T5096] [ 95.153263][ T5096] CPU0 [ 95.154669][ T5096] ---- [ 95.156195][ T5096] lock(&c->sb_lock); [ 95.158163][ T5096] lock(&c->sb_lock); [ 95.160081][ T5096] [ 95.160081][ T5096] *** DEADLOCK *** [ 95.160081][ T5096] [ 95.163609][ T5096] May be due to missing lock nesting notation [ 95.163609][ T5096] [ 95.166947][ T5096] 2 locks held by syz-executor179/5096: [ 95.169177][ T5096] #0: ffff888040700278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 95.173431][ T5096] #1: ffff888040700908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 95.179062][ T5096] [ 95.179062][ T5096] stack backtrace: [ 95.181911][ T5096] CPU: 0 UID: 0 PID: 5096 Comm: syz-executor179 Not tainted 6.12.0-rc3-syzkaller-00007-g6485cf5ea253 #0 [ 95.186234][ T5096] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 95.190610][ T5096] Call Trace: [ 95.191984][ T5096] [ 95.193278][ T5096] dump_stack_lvl+0x241/0x360 [ 95.195600][ T5096] ? __pfx_dump_stack_lvl+0x10/0x10 [ 95.198178][ T5096] ? __pfx__printk+0x10/0x10 [ 95.200449][ T5096] ? lockdep_unlock+0x16a/0x300 [ 95.202420][ T5096] print_deadlock_bug+0x483/0x620 [ 95.204436][ T5096] validate_chain+0x15e2/0x5920 [ 95.206388][ T5096] ? __pfx___bfs+0x10/0x10 [ 95.208176][ T5096] ? __pfx_validate_chain+0x10/0x10 [ 95.210334][ T5096] ? mark_lock+0x9a/0x360 [ 95.212262][ T5096] ? __lock_acquire+0x1384/0x2050 [ 95.215031][ T5096] ? mark_lock+0x9a/0x360 [ 95.217128][ T5096] __lock_acquire+0x1384/0x2050 [ 95.219272][ T5096] lock_acquire+0x1ed/0x550 [ 95.221078][ T5096] ? bch2_replicas_entry_validate+0x2a/0x80 [ 95.223458][ T5096] ? __pfx_lock_acquire+0x10/0x10 [ 95.225609][ T5096] ? lockdep_hardirqs_on+0x99/0x150 [ 95.228247][ T5096] ? __pfx___might_resched+0x10/0x10 [ 95.231233][ T5096] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 95.233804][ T5096] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 95.236426][ T5096] ? stack_trace_save+0x118/0x1d0 [ 95.238316][ T5096] __mutex_lock+0x136/0xd70 [ 95.240048][ T5096] ? bch2_replicas_entry_validate+0x2a/0x80 [ 95.242605][ T5096] ? kasan_save_track+0x51/0x80 [ 95.245299][ T5096] ? kasan_save_track+0x3f/0x80 [ 95.247990][ T5096] ? __kasan_kmalloc+0x98/0xb0 [ 95.249965][ T5096] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 95.252563][ T5096] ? kmemdup_noprof+0x2a/0x60 [ 95.254432][ T5096] ? bch2_read_superblock_clean+0xd6/0x520 [ 95.256788][ T5096] ? bch2_replicas_entry_validate+0x2a/0x80 [ 95.259623][ T5096] ? bch2_fs_start+0x356/0x5b0 [ 95.262258][ T5096] ? __pfx___mutex_lock+0x10/0x10 [ 95.264612][ T5096] ? do_syscall_64+0xf3/0x230 [ 95.266535][ T5096] bch2_replicas_entry_validate+0x2a/0x80 [ 95.268801][ T5096] journal_entry_data_usage_validate+0x2b6/0x690 [ 95.271346][ T5096] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 95.274200][ T5096] ? journal_entry_usage_validate+0xc2/0x360 [ 95.277004][ T5096] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 95.280676][ T5096] ? rcu_is_watching+0x15/0xb0 [ 95.282715][ T5096] ? trace_kmalloc+0x1f/0xd0 [ 95.284597][ T5096] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 95.287251][ T5096] ? kmemdup_noprof+0x45/0x60 [ 95.289146][ T5096] ? bch2_journal_entry_validate+0x6a/0xf0 [ 95.291772][ T5096] bch2_read_superblock_clean+0x207/0x520 [ 95.294365][ T5096] bch2_fs_recovery+0x1f4/0x39c0 [ 95.296837][ T5096] ? mark_lock+0x9a/0x360 [ 95.298662][ T5096] ? __lock_acquire+0x1384/0x2050 [ 95.300763][ T5096] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 95.303017][ T5096] ? __pfx_lock_release+0x10/0x10 [ 95.305074][ T5096] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 95.307309][ T5096] ? __pfx_lock_release+0x10/0x10 [ 95.309342][ T5096] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 95.311611][ T5096] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 95.313940][ T5096] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 95.316510][ T5096] ? llist_reverse_order+0x72/0x90 [ 95.318894][ T5096] bch2_fs_start+0x356/0x5b0 [ 95.320960][ T5096] bch2_fs_get_tree+0xd68/0x1710 [ 95.323254][ T5096] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 95.325387][ T5096] ? generic_parse_monolithic+0x387/0x400 [ 95.327675][ T5096] ? apparmor_capable+0x13b/0x1b0 [ 95.329766][ T5096] vfs_get_tree+0x90/0x2b0 [ 95.331719][ T5096] do_new_mount+0x2be/0xb40 [ 95.333924][ T5096] ? __pfx_do_new_mount+0x10/0x10 [ 95.336635][ T5096] __se_sys_mount+0x2d6/0x3c0 [ 95.338900][ T5096] ? __pfx___se_sys_mount+0x10/0x10 [ 95.340942][ T5096] ? do_syscall_64+0x100/0x230 [ 95.342856][ T5096] ? __x64_sys_mount+0x20/0xc0 [ 95.344741][ T5096] do_syscall_64+0xf3/0x230 [ 95.346658][ T5096] ? clear_bhb_loop+0x35/0x90 [ 95.349299][ T5096] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.352734][ T5096] RIP: 0033:0x7efd9f79fdea [ 95.354532][ T5096] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 95.362137][ T5096] RSP: 002b:00007ffc7d02f788 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 95.365766][ T5096] RAX: ffffffffffffffda RBX: 00007ffc7d02f7a0 RCX: 00007efd9f79fdea [ 95.370256][ T5096] RDX: 0000000020005d80 RSI: 0000000020000000 RDI: 00007ffc7d02f7a0 [ 95.373541][ T5096] RBP: 0000000000000004 R08: 00007ffc7d02f7e0 R09: 0000000000005df5 [ 95.376719][ T5096] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 95.379973][ T5096] R13: 00007ffc7d02f7e0 R14: 0000000000000003 R15: 0000000001000000 [ 95.383612][ T5096] [ 96.959113][ T9] cfg80211: failed to load regulatory.db VM DIAGNOSIS: 07:31:23 Registers: info registers vcpu 0 CPU#0 RAX=0000000000000020 RBX=ffffffff9a714e40 RCX=0000000000000000 RDX=00000000000003f8 RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc90002e3e570 R8 =ffffffff8549b83b R9 =1ffff11003d62046 R10=dffffc0000000000 R11=ffffffff8549b7f0 R12=dffffc0000000000 R13=ffffffff9a40fef7 R14=0000000000000020 R15=00000000000003f8 RIP=ffffffff8549b86e RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 00005555581a8380 ffffffff 00c00000 GS =0000 ffff88801fc00000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=0000561615cb5a28 CR3=00000000125e8000 CR4=00352ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 Opmask00=0000000000440401 Opmask01=0000000000000001 Opmask02=00000000fff7ffff Opmask03=0000000000000000 Opmask04=0000000000000000 Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000 ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007ffc7d02f920 0000003000000018 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007efd9f823560 00007efd9f8175d8 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007efd9f8091e4 00007efd9f81c240 ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2525252525252525 2525252525252525 2525252525252525 2525252525252525 ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 65723d73726f7272 6500747865003036 36396f7369007265 6c6c616b7a797300 ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 40571856574a5757 4000515d40001513 131c4a564c005740 4949444e5f5c5600 ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000