Warning: Permanently added '[localhost]:39471' (ED25519) to the list of known hosts. executing program syzkaller login: [ 93.292022][ T5098] loop0: detected capacity change from 0 to 32768 [ 93.405561][ T5098] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=crc64,data_checksum=none,compression=lz4,nojournal_transaction_names [ 93.425165][ T5098] [ 93.426331][ T5098] ============================================ [ 93.428865][ T5098] WARNING: possible recursive locking detected [ 93.431489][ T5098] 6.12.0-rc1-syzkaller-00042-gf23aa4c0761a #0 Not tainted [ 93.435685][ T5098] -------------------------------------------- [ 93.438643][ T5098] syz-executor224/5098 is trying to acquire lock: [ 93.441485][ T5098] ffff888043580908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 93.446192][ T5098] [ 93.446192][ T5098] but task is already holding lock: [ 93.450339][ T5098] ffff888043580908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 93.455066][ T5098] [ 93.455066][ T5098] other info that might help us debug this: [ 93.458316][ T5098] Possible unsafe locking scenario: [ 93.458316][ T5098] [ 93.461168][ T5098] CPU0 [ 93.462427][ T5098] ---- [ 93.463879][ T5098] lock(&c->sb_lock); [ 93.465643][ T5098] lock(&c->sb_lock); [ 93.467276][ T5098] [ 93.467276][ T5098] *** DEADLOCK *** [ 93.467276][ T5098] [ 93.470402][ T5098] May be due to missing lock nesting notation [ 93.470402][ T5098] [ 93.473524][ T5098] 2 locks held by syz-executor224/5098: [ 93.475688][ T5098] #0: ffff888043580278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 93.478969][ T5098] #1: ffff888043580908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 93.482675][ T5098] [ 93.482675][ T5098] stack backtrace: [ 93.485048][ T5098] CPU: 0 UID: 0 PID: 5098 Comm: syz-executor224 Not tainted 6.12.0-rc1-syzkaller-00042-gf23aa4c0761a #0 [ 93.489186][ T5098] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 93.493296][ T5098] Call Trace: [ 93.494619][ T5098] [ 93.495784][ T5098] dump_stack_lvl+0x241/0x360 [ 93.497653][ T5098] ? __pfx_dump_stack_lvl+0x10/0x10 [ 93.499667][ T5098] ? __pfx__printk+0x10/0x10 [ 93.501475][ T5098] ? lockdep_unlock+0x16a/0x300 [ 93.503248][ T5098] print_deadlock_bug+0x483/0x620 [ 93.505244][ T5098] validate_chain+0x15e2/0x5920 [ 93.506985][ T5098] ? __pfx___bfs+0x10/0x10 [ 93.508686][ T5098] ? __pfx_validate_chain+0x10/0x10 [ 93.510839][ T5098] ? mark_lock+0x9a/0x360 [ 93.512505][ T5098] ? __lock_acquire+0x1384/0x2050 [ 93.514484][ T5098] ? mark_lock+0x9a/0x360 [ 93.516229][ T5098] __lock_acquire+0x1384/0x2050 [ 93.518115][ T5098] lock_acquire+0x1ed/0x550 [ 93.519922][ T5098] ? bch2_replicas_entry_validate+0x2a/0x80 [ 93.522187][ T5098] ? __pfx_lock_acquire+0x10/0x10 [ 93.524190][ T5098] ? lockdep_hardirqs_on+0x99/0x150 [ 93.526236][ T5098] ? __pfx___might_resched+0x10/0x10 [ 93.528176][ T5098] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 93.530203][ T5098] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 93.532318][ T5098] ? stack_trace_save+0x118/0x1d0 [ 93.533969][ T5098] __mutex_lock+0x136/0xd70 [ 93.535470][ T5098] ? bch2_replicas_entry_validate+0x2a/0x80 [ 93.537774][ T5098] ? kasan_save_track+0x51/0x80 [ 93.539692][ T5098] ? kasan_save_track+0x3f/0x80 [ 93.541566][ T5098] ? __kasan_kmalloc+0x98/0xb0 [ 93.543385][ T5098] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 93.545978][ T5098] ? kmemdup_noprof+0x2a/0x60 [ 93.547803][ T5098] ? bch2_read_superblock_clean+0xd6/0x520 [ 93.550071][ T5098] ? bch2_replicas_entry_validate+0x2a/0x80 [ 93.552337][ T5098] ? bch2_fs_start+0x356/0x5b0 [ 93.554181][ T5098] ? __pfx___mutex_lock+0x10/0x10 [ 93.556135][ T5098] ? do_syscall_64+0xf3/0x230 [ 93.557889][ T5098] bch2_replicas_entry_validate+0x2a/0x80 [ 93.560079][ T5098] journal_entry_data_usage_validate+0x2b6/0x690 [ 93.562450][ T5098] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 93.565072][ T5098] ? journal_entry_usage_validate+0xc2/0x360 [ 93.567367][ T5098] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 93.569863][ T5098] ? rcu_is_watching+0x15/0xb0 [ 93.571621][ T5098] ? trace_kmalloc+0x1f/0xd0 [ 93.573323][ T5098] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 93.575866][ T5098] ? kmemdup_noprof+0x45/0x60 [ 93.577576][ T5098] ? bch2_journal_entry_validate+0x6a/0xf0 [ 93.579827][ T5098] bch2_read_superblock_clean+0x207/0x520 [ 93.582130][ T5098] bch2_fs_recovery+0x1f4/0x39c0 [ 93.584098][ T5098] ? mark_lock+0x9a/0x360 [ 93.585805][ T5098] ? __lock_acquire+0x1384/0x2050 [ 93.587742][ T5098] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 93.589765][ T5098] ? __pfx_lock_release+0x10/0x10 [ 93.591591][ T5098] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 93.593849][ T5098] ? __pfx_lock_release+0x10/0x10 [ 93.595826][ T5098] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 93.597990][ T5098] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 93.599985][ T5098] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 93.601966][ T5098] ? llist_reverse_order+0x72/0x90 [ 93.603812][ T5098] bch2_fs_start+0x356/0x5b0 [ 93.605521][ T5098] bch2_fs_get_tree+0xd68/0x1710 [ 93.607319][ T5098] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 93.609223][ T5098] ? generic_parse_monolithic+0x387/0x400 [ 93.611355][ T5098] ? apparmor_capable+0x13b/0x1b0 [ 93.613355][ T5098] vfs_get_tree+0x90/0x2b0 [ 93.615102][ T5098] do_new_mount+0x2be/0xb40 [ 93.616836][ T5098] ? __pfx_do_new_mount+0x10/0x10 [ 93.618805][ T5098] __se_sys_mount+0x2d6/0x3c0 [ 93.620645][ T5098] ? __pfx___se_sys_mount+0x10/0x10 [ 93.622617][ T5098] ? do_syscall_64+0x100/0x230 [ 93.624488][ T5098] ? __x64_sys_mount+0x20/0xc0 [ 93.626327][ T5098] do_syscall_64+0xf3/0x230 [ 93.628092][ T5098] ? clear_bhb_loop+0x35/0x90 [ 93.629823][ T5098] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.632073][ T5098] RIP: 0033:0x7f682a044dea [ 93.633866][ T5098] 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 [ 93.641257][ T5098] RSP: 002b:00007ffc36cd7418 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 93.644365][ T5098] RAX: ffffffffffffffda RBX: 00007ffc36cd7430 RCX: 00007f682a044dea [ 93.647421][ T5098] RDX: 00000000200001c0 RSI: 0000000020005900 RDI: 00007ffc36cd7430 [ 93.650525][ T5098] RBP: 0000000000000004 R08: 00007ffc36cd7470 R09: 00000000000058ff [ 93.653447][ T5098] R10: 0000000001000000 R11: 0000000000000282 R12: 0000000001000000 [ 93.656264][ T5098] R13: 00007ffc36cd7470 R14: 0000000000000003 R15: 0000000001000000 [ 93.659413][ T5098] [ 97.020376][ T785] cfg80211: failed to load regulatory.db VM DIAGNOSIS: 10:26:15 Registers: info registers vcpu 0 CPU#0 RAX=000000000000002d RBX=ffffffff9a711e40 RCX=0000000000000000 RDX=00000000000003f8 RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc90002dae570 R8 =ffffffff85496a1b R9 =1ffff11003d7d046 R10=dffffc0000000000 R11=ffffffff854969d0 R12=dffffc0000000000 R13=ffffffff9a40cf02 R14=000000000000002d R15=00000000000003f8 RIP=ffffffff85496a4e 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 000055555ad91380 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=000055b8dfeec068 CR3=0000000012600000 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 00007ffc36cd75b0 0000003000000018 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f682a0c8560 00007f682a0bc5d8 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007f682a0adc84 00007f682a0c1240 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