Warning: Permanently added '[localhost]:29132' (ED25519) to the list of known hosts. executing program syzkaller login: [ 94.892823][ T5100] loop0: detected capacity change from 0 to 32768 [ 95.007756][ T5100] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=compression=lz4,nojournal_transaction_names [ 95.014285][ T5100] [ 95.015679][ T5100] ============================================ [ 95.018572][ T5100] WARNING: possible recursive locking detected [ 95.021469][ T5100] 6.12.0-rc1-syzkaller #0 Not tainted [ 95.025354][ T5100] -------------------------------------------- [ 95.028209][ T5100] syz-executor294/5100 is trying to acquire lock: [ 95.030909][ T5100] ffff888040f00908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 95.037759][ T5100] [ 95.037759][ T5100] but task is already holding lock: [ 95.040925][ T5100] ffff888040f00908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 95.044573][ T5100] [ 95.044573][ T5100] other info that might help us debug this: [ 95.047785][ T5100] Possible unsafe locking scenario: [ 95.047785][ T5100] [ 95.050768][ T5100] CPU0 [ 95.052211][ T5100] ---- [ 95.053636][ T5100] lock(&c->sb_lock); [ 95.055266][ T5100] lock(&c->sb_lock); [ 95.056880][ T5100] [ 95.056880][ T5100] *** DEADLOCK *** [ 95.056880][ T5100] [ 95.060577][ T5100] May be due to missing lock nesting notation [ 95.060577][ T5100] [ 95.063599][ T5100] 2 locks held by syz-executor294/5100: [ 95.065379][ T5100] #0: ffff888040f00278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 95.068423][ T5100] #1: ffff888040f00908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 95.071766][ T5100] [ 95.071766][ T5100] stack backtrace: [ 95.074091][ T5100] CPU: 0 UID: 0 PID: 5100 Comm: syz-executor294 Not tainted 6.12.0-rc1-syzkaller #0 [ 95.078028][ T5100] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 95.082242][ T5100] Call Trace: [ 95.083635][ T5100] [ 95.085087][ T5100] dump_stack_lvl+0x241/0x360 [ 95.087816][ T5100] ? __pfx_dump_stack_lvl+0x10/0x10 [ 95.090848][ T5100] ? __pfx__printk+0x10/0x10 [ 95.093033][ T5100] ? lockdep_unlock+0x16a/0x300 [ 95.094703][ T5100] print_deadlock_bug+0x483/0x620 [ 95.096438][ T5100] validate_chain+0x15e2/0x5920 [ 95.097943][ T5100] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 95.099568][ T5100] ? mark_lock+0x9a/0x360 [ 95.100835][ T5100] ? __pfx_validate_chain+0x10/0x10 [ 95.102470][ T5100] ? __lock_acquire+0x1384/0x2050 [ 95.104184][ T5100] ? mark_lock+0x9a/0x360 [ 95.105884][ T5100] ? __lock_acquire+0x1384/0x2050 [ 95.108646][ T5100] ? mark_lock+0x9a/0x360 [ 95.111190][ T5100] __lock_acquire+0x1384/0x2050 [ 95.113174][ T5100] lock_acquire+0x1ed/0x550 [ 95.114996][ T5100] ? bch2_replicas_entry_validate+0x2a/0x80 [ 95.117379][ T5100] ? __pfx_lock_acquire+0x10/0x10 [ 95.119305][ T5100] ? lockdep_hardirqs_on+0x99/0x150 [ 95.121384][ T5100] ? __pfx___might_resched+0x10/0x10 [ 95.123769][ T5100] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 95.126521][ T5100] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 95.129500][ T5100] ? stack_trace_save+0x118/0x1d0 [ 95.131600][ T5100] __mutex_lock+0x136/0xd70 [ 95.133502][ T5100] ? bch2_replicas_entry_validate+0x2a/0x80 [ 95.135817][ T5100] ? kasan_save_track+0x51/0x80 [ 95.137999][ T5100] ? kasan_save_track+0x3f/0x80 [ 95.140087][ T5100] ? __kasan_kmalloc+0x98/0xb0 [ 95.141816][ T5100] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 95.144688][ T5100] ? kmemdup_noprof+0x2a/0x60 [ 95.146754][ T5100] ? bch2_read_superblock_clean+0xd6/0x520 [ 95.149360][ T5100] ? bch2_replicas_entry_validate+0x2a/0x80 [ 95.151676][ T5100] ? bch2_fs_start+0x356/0x5b0 [ 95.153418][ T5100] ? __pfx___mutex_lock+0x10/0x10 [ 95.155363][ T5100] ? do_syscall_64+0xf3/0x230 [ 95.157380][ T5100] bch2_replicas_entry_validate+0x2a/0x80 [ 95.160065][ T5100] journal_entry_data_usage_validate+0x2b6/0x690 [ 95.163128][ T5100] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 95.166060][ T5100] ? journal_entry_usage_validate+0xc2/0x360 [ 95.168457][ T5100] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 95.170836][ T5100] ? rcu_is_watching+0x15/0xb0 [ 95.172902][ T5100] ? trace_kmalloc+0x1f/0xd0 [ 95.174997][ T5100] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 95.177916][ T5100] ? kmemdup_noprof+0x45/0x60 [ 95.180042][ T5100] ? bch2_journal_entry_validate+0x6a/0xf0 [ 95.182339][ T5100] bch2_read_superblock_clean+0x207/0x520 [ 95.184510][ T5100] bch2_fs_recovery+0x1f4/0x39c0 [ 95.186190][ T5100] ? mark_lock+0x9a/0x360 [ 95.187591][ T5100] ? __lock_acquire+0x1384/0x2050 [ 95.189047][ T5100] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 95.190760][ T5100] ? __pfx_lock_release+0x10/0x10 [ 95.192393][ T5100] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 95.194198][ T5100] ? __pfx_lock_release+0x10/0x10 [ 95.195904][ T5100] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 95.197640][ T5100] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 95.199364][ T5100] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 95.201134][ T5100] ? llist_reverse_order+0x72/0x90 [ 95.202737][ T5100] bch2_fs_start+0x356/0x5b0 [ 95.204419][ T5100] bch2_fs_get_tree+0xd68/0x1710 [ 95.206272][ T5100] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 95.208882][ T5100] ? generic_parse_monolithic+0x387/0x400 [ 95.211441][ T5100] ? __pfx_vfs_parse_fs_string+0x10/0x10 [ 95.213559][ T5100] ? apparmor_capable+0x13b/0x1b0 [ 95.215408][ T5100] vfs_get_tree+0x90/0x2b0 [ 95.217210][ T5100] do_new_mount+0x2be/0xb40 [ 95.219156][ T5100] ? __pfx_do_new_mount+0x10/0x10 [ 95.221133][ T5100] __se_sys_mount+0x2d6/0x3c0 [ 95.223036][ T5100] ? __pfx___se_sys_mount+0x10/0x10 [ 95.225038][ T5100] ? do_syscall_64+0x100/0x230 [ 95.226668][ T5100] ? __x64_sys_mount+0x20/0xc0 [ 95.228384][ T5100] do_syscall_64+0xf3/0x230 [ 95.230680][ T5100] ? clear_bhb_loop+0x35/0x90 [ 95.233100][ T5100] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.235890][ T5100] RIP: 0033:0x7facf96ca06a [ 95.237687][ T5100] 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 [ 95.245335][ T5100] RSP: 002b:00007ffc5dea0338 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 95.248460][ T5100] RAX: ffffffffffffffda RBX: 00007ffc5dea0350 RCX: 00007facf96ca06a [ 95.251669][ T5100] RDX: 0000000020005d80 RSI: 0000000020000100 RDI: 00007ffc5dea0350 [ 95.254692][ T5100] RBP: 0000000000000004 R08: 00007ffc5dea0390 R09: 0000000000005d99 [ 95.257846][ T5100] R10: 0000000003000400 R11: 0000000000000282 R12: 0000000003000400 [ 95.261169][ T5100] R13: 00007ffc5dea0390 R14: 0000000000000003 R15: 0000000001000000 [ 95.264611][ T5100] [ 96.808620][ T9] cfg80211: failed to load regulatory.db VM DIAGNOSIS: 20:22:07 Registers: info registers vcpu 0 CPU#0 RAX=0000000000000072 RBX=ffffffff9a711e40 RCX=0000000000000000 RDX=00000000000003f8 RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc90002e0e570 R8 =ffffffff8549699b R9 =1ffff11003dac046 R10=dffffc0000000000 R11=ffffffff85496950 R12=dffffc0000000000 R13=ffffffff9a40ceff R14=0000000000000072 R15=00000000000003f8 RIP=ffffffff854969ce 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 000055557e406380 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=000055c3ab4006e8 CR3=000000003f154000 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 00007ffc5dea04d0 0000003000000018 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007facf974d620 00007facf97415d8 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007facf9733064 00007facf9746240 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