./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2802441007 <...> Warning: Permanently added '10.128.0.32' (ED25519) to the list of known hosts. execve("./syz-executor2802441007", ["./syz-executor2802441007"], 0x7ffc33bdbac0 /* 10 vars */) = 0 brk(NULL) = 0x555570449000 brk(0x555570449d00) = 0x555570449d00 arch_prctl(ARCH_SET_FS, 0x555570449380) = 0 set_tid_address(0x555570449650) = 5218 set_robust_list(0x555570449660, 24) = 0 rseq(0x555570449ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2802441007", 4096) = 28 getrandom("\x6c\x68\x4e\x66\x30\x2e\xd5\x45", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555570449d00 brk(0x55557046ad00) = 0x55557046ad00 brk(0x55557046b000) = 0x55557046b000 mprotect(0x7f3d03da7000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 executing program write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3cfb800000 write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 munmap(0x7f3cfb800000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file7", 0777) = 0 [ 54.660322][ T5218] loop0: detected capacity change from 0 to 32768 [ 54.693430][ T5218] ======================================================= [ 54.693430][ T5218] WARNING: The mand mount option has been deprecated and [ 54.693430][ T5218] and is ignored by this kernel. Remove the mand [ 54.693430][ T5218] option from the mount to silence this warning. [ 54.693430][ T5218] ======================================================= [ 54.779259][ T5218] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,compression=zstd,norecovery,recovery_pass_last=check_dirents,nojournal_transaction_names,version_upgrade=none [ 54.798498][ T5218] [ 54.800815][ T5218] ============================================ [ 54.806950][ T5218] WARNING: possible recursive locking detected [ 54.813088][ T5218] 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0 Not tainted [ 54.820433][ T5218] -------------------------------------------- [ 54.826559][ T5218] syz-executor280/5218 is trying to acquire lock: [ 54.832973][ T5218] ffff888077180908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 54.842820][ T5218] [ 54.842820][ T5218] but task is already holding lock: [ 54.850177][ T5218] ffff888077180908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 54.859898][ T5218] [ 54.859898][ T5218] other info that might help us debug this: [ 54.867935][ T5218] Possible unsafe locking scenario: [ 54.867935][ T5218] [ 54.875378][ T5218] CPU0 [ 54.878695][ T5218] ---- [ 54.881955][ T5218] lock(&c->sb_lock); [ 54.886008][ T5218] lock(&c->sb_lock); [ 54.890087][ T5218] [ 54.890087][ T5218] *** DEADLOCK *** [ 54.890087][ T5218] [ 54.898260][ T5218] May be due to missing lock nesting notation [ 54.898260][ T5218] [ 54.906567][ T5218] 2 locks held by syz-executor280/5218: [ 54.912089][ T5218] #0: ffff888077180278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 54.921407][ T5218] #1: ffff888077180908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 54.931588][ T5218] [ 54.931588][ T5218] stack backtrace: [ 54.937472][ T5218] CPU: 1 UID: 0 PID: 5218 Comm: syz-executor280 Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0 [ 54.948634][ T5218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 54.958708][ T5218] Call Trace: [ 54.961981][ T5218] [ 54.964898][ T5218] dump_stack_lvl+0x241/0x360 [ 54.969573][ T5218] ? __pfx_dump_stack_lvl+0x10/0x10 [ 54.974756][ T5218] ? __pfx__printk+0x10/0x10 [ 54.979356][ T5218] ? lockdep_unlock+0x16a/0x300 [ 54.984294][ T5218] print_deadlock_bug+0x483/0x620 [ 54.989310][ T5218] validate_chain+0x15e2/0x5920 [ 54.994174][ T5218] ? __pfx___bfs+0x10/0x10 [ 54.998592][ T5218] ? __pfx_validate_chain+0x10/0x10 [ 55.003792][ T5218] ? mark_lock+0x9a/0x360 [ 55.008148][ T5218] ? __lock_acquire+0x1384/0x2050 [ 55.013185][ T5218] ? mark_lock+0x9a/0x360 [ 55.017586][ T5218] __lock_acquire+0x1384/0x2050 [ 55.022432][ T5218] lock_acquire+0x1ed/0x550 [ 55.026919][ T5218] ? bch2_replicas_entry_validate+0x2a/0x80 [ 55.032798][ T5218] ? __pfx_lock_acquire+0x10/0x10 [ 55.037806][ T5218] ? lockdep_hardirqs_on+0x99/0x150 [ 55.042991][ T5218] ? __pfx___might_resched+0x10/0x10 [ 55.048259][ T5218] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 55.054155][ T5218] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 55.060486][ T5218] ? stack_trace_save+0x118/0x1d0 [ 55.065513][ T5218] __mutex_lock+0x136/0xd70 [ 55.069997][ T5218] ? bch2_replicas_entry_validate+0x2a/0x80 [ 55.075872][ T5218] ? kasan_save_track+0x51/0x80 [ 55.080795][ T5218] ? kasan_save_track+0x3f/0x80 [ 55.085642][ T5218] ? __kasan_kmalloc+0x98/0xb0 [ 55.090390][ T5218] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 55.096964][ T5218] ? kmemdup_noprof+0x2a/0x60 [ 55.101649][ T5218] ? bch2_read_superblock_clean+0xd6/0x520 [ 55.107525][ T5218] ? bch2_replicas_entry_validate+0x2a/0x80 [ 55.113399][ T5218] ? bch2_fs_start+0x356/0x5b0 [ 55.118153][ T5218] ? __pfx___mutex_lock+0x10/0x10 [ 55.123166][ T5218] ? do_syscall_64+0xf3/0x230 [ 55.127825][ T5218] bch2_replicas_entry_validate+0x2a/0x80 [ 55.133539][ T5218] journal_entry_data_usage_validate+0x2b6/0x690 [ 55.139884][ T5218] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 55.146729][ T5218] ? journal_entry_usage_validate+0xc2/0x360 [ 55.152792][ T5218] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 55.159189][ T5218] ? rcu_is_watching+0x15/0xb0 [ 55.163935][ T5218] ? trace_kmalloc+0x1f/0xd0 [ 55.168531][ T5218] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 55.175292][ T5218] ? kmemdup_noprof+0x45/0x60 [ 55.179956][ T5218] ? bch2_journal_entry_validate+0x6a/0xf0 [ 55.185763][ T5218] bch2_read_superblock_clean+0x207/0x520 [ 55.191467][ T5218] bch2_fs_recovery+0x1f4/0x39c0 [ 55.196413][ T5218] ? mark_lock+0x9a/0x360 [ 55.200755][ T5218] ? __lock_acquire+0x1384/0x2050 [ 55.205774][ T5218] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 55.211144][ T5218] ? __pfx_lock_release+0x10/0x10 [ 55.216183][ T5218] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 55.221806][ T5218] ? __pfx_lock_release+0x10/0x10 [ 55.226839][ T5218] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 55.232465][ T5218] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 55.238184][ T5218] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 55.243804][ T5218] ? llist_reverse_order+0x72/0x90 [ 55.248897][ T5218] bch2_fs_start+0x356/0x5b0 [ 55.253509][ T5218] bch2_fs_get_tree+0xd68/0x1710 [ 55.258451][ T5218] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 55.263818][ T5218] ? smack_fs_context_parse_param+0xff/0x170 [ 55.269810][ T5218] ? generic_parse_monolithic+0x387/0x400 [ 55.275546][ T5218] ? cap_capable+0x1b4/0x250 [ 55.280122][ T5218] ? safesetid_security_capable+0xb2/0x1d0 [ 55.285913][ T5218] vfs_get_tree+0x90/0x2b0 [ 55.290317][ T5218] do_new_mount+0x2be/0xb40 [ 55.294824][ T5218] ? __pfx_do_new_mount+0x10/0x10 [ 55.299849][ T5218] __se_sys_mount+0x2d6/0x3c0 [ 55.304533][ T5218] ? __pfx___se_sys_mount+0x10/0x10 [ 55.309714][ T5218] ? do_syscall_64+0x100/0x230 [ 55.314478][ T5218] ? __x64_sys_mount+0x20/0xc0 [ 55.319333][ T5218] do_syscall_64+0xf3/0x230 [ 55.323840][ T5218] ? clear_bhb_loop+0x35/0x90 [ 55.328601][ T5218] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.334516][ T5218] RIP: 0033:0x7f3d03d2fc3a [ 55.338915][ T5218] 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 [ 55.358503][ T5218] RSP: 002b:00007ffe3409db28 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 55.366898][ T5218] RAX: ffffffffffffffda RBX: 00007ffe3409db40 RCX: 00007f3d03d2fc3a [ 55.374853][ T5218] RDX: 0000000020005d80 RSI: 0000000020000240 RDI: 00007ffe3409db40 [ 55.382805][ T5218] RBP: 0000000000000004 R08: 00007ffe3409db80 R09: 0000000000005de7 [ 55.390775][ T5218] R10: 0000000000000044 R11: 0000000000000282 R12: 0000000000000044 [ 55.398726][ T5218] R13: 00007ffe3409db80 R14: 0000000000000003 R15: 0000000001000000 [ 55.406683][ T5218]