./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3126584714 <...> Warning: Permanently added '10.128.1.8' (ED25519) to the list of known hosts. execve("./syz-executor3126584714", ["./syz-executor3126584714"], 0x7ffc11d0c360 /* 10 vars */) = 0 brk(NULL) = 0x555576905000 brk(0x555576905d00) = 0x555576905d00 arch_prctl(ARCH_SET_FS, 0x555576905380) = 0 set_tid_address(0x555576905650) = 5219 set_robust_list(0x555576905660, 24) = 0 rseq(0x555576905ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3126584714", 4096) = 28 getrandom("\xaf\x90\x7c\x92\xa9\x2a\x2d\x5b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555576905d00 brk(0x555576926d00) = 0x555576926d00 brk(0x555576927000) = 0x555576927000 mprotect(0x7f1b9416b000, 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 write(1, "executing program\n", 18executing program ) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1b8bc00000 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(0x7f1b8bc00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 [ 55.592625][ T5219] loop0: detected capacity change from 0 to 32768 [ 55.636766][ T5219] ======================================================= [ 55.636766][ T5219] WARNING: The mand mount option has been deprecated and [ 55.636766][ T5219] and is ignored by this kernel. Remove the mand [ 55.636766][ T5219] option from the mount to silence this warning. [ 55.636766][ T5219] ======================================================= [ 55.703249][ T5219] 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 [ 55.722016][ T5219] [ 55.724357][ T5219] ============================================ [ 55.730482][ T5219] WARNING: possible recursive locking detected [ 55.736630][ T5219] 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0 Not tainted [ 55.743729][ T5219] -------------------------------------------- [ 55.749852][ T5219] syz-executor312/5219 is trying to acquire lock: [ 55.756240][ T5219] ffff888055d00908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 55.766065][ T5219] [ 55.766065][ T5219] but task is already holding lock: [ 55.773427][ T5219] ffff888055d00908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 55.783143][ T5219] [ 55.783143][ T5219] other info that might help us debug this: [ 55.791175][ T5219] Possible unsafe locking scenario: [ 55.791175][ T5219] [ 55.798600][ T5219] CPU0 [ 55.801857][ T5219] ---- [ 55.805121][ T5219] lock(&c->sb_lock); [ 55.809171][ T5219] lock(&c->sb_lock); [ 55.813216][ T5219] [ 55.813216][ T5219] *** DEADLOCK *** [ 55.813216][ T5219] [ 55.821331][ T5219] May be due to missing lock nesting notation [ 55.821331][ T5219] [ 55.829628][ T5219] 2 locks held by syz-executor312/5219: [ 55.835153][ T5219] #0: ffff888055d00278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 55.844482][ T5219] #1: ffff888055d00908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 55.854674][ T5219] [ 55.854674][ T5219] stack backtrace: [ 55.860567][ T5219] CPU: 1 UID: 0 PID: 5219 Comm: syz-executor312 Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0 [ 55.871664][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 55.881712][ T5219] Call Trace: [ 55.884979][ T5219] [ 55.887896][ T5219] dump_stack_lvl+0x241/0x360 [ 55.892577][ T5219] ? __pfx_dump_stack_lvl+0x10/0x10 [ 55.897760][ T5219] ? __pfx__printk+0x10/0x10 [ 55.902336][ T5219] ? lockdep_unlock+0x16a/0x300 [ 55.907180][ T5219] print_deadlock_bug+0x483/0x620 [ 55.912193][ T5219] validate_chain+0x15e2/0x5920 [ 55.917033][ T5219] ? __pfx___bfs+0x10/0x10 [ 55.921433][ T5219] ? __pfx_validate_chain+0x10/0x10 [ 55.926621][ T5219] ? mark_lock+0x9a/0x360 [ 55.930937][ T5219] ? __lock_acquire+0x1384/0x2050 [ 55.935951][ T5219] ? mark_lock+0x9a/0x360 [ 55.940269][ T5219] __lock_acquire+0x1384/0x2050 [ 55.945115][ T5219] lock_acquire+0x1ed/0x550 [ 55.949734][ T5219] ? bch2_replicas_entry_validate+0x2a/0x80 [ 55.955629][ T5219] ? __pfx_lock_acquire+0x10/0x10 [ 55.960652][ T5219] ? lockdep_hardirqs_on+0x99/0x150 [ 55.965845][ T5219] ? __pfx___might_resched+0x10/0x10 [ 55.971122][ T5219] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 55.977013][ T5219] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 55.983348][ T5219] ? stack_trace_save+0x118/0x1d0 [ 55.988377][ T5219] __mutex_lock+0x136/0xd70 [ 55.992873][ T5219] ? bch2_replicas_entry_validate+0x2a/0x80 [ 55.998761][ T5219] ? kasan_save_track+0x51/0x80 [ 56.003606][ T5219] ? kasan_save_track+0x3f/0x80 [ 56.008445][ T5219] ? __kasan_kmalloc+0x98/0xb0 [ 56.013215][ T5219] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 56.019801][ T5219] ? kmemdup_noprof+0x2a/0x60 [ 56.024475][ T5219] ? bch2_read_superblock_clean+0xd6/0x520 [ 56.030276][ T5219] ? bch2_replicas_entry_validate+0x2a/0x80 [ 56.036159][ T5219] ? bch2_fs_start+0x356/0x5b0 [ 56.040917][ T5219] ? __pfx___mutex_lock+0x10/0x10 [ 56.045933][ T5219] ? do_syscall_64+0xf3/0x230 [ 56.050602][ T5219] bch2_replicas_entry_validate+0x2a/0x80 [ 56.056313][ T5219] journal_entry_data_usage_validate+0x2b6/0x690 [ 56.062632][ T5219] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 56.069477][ T5219] ? journal_entry_usage_validate+0xc2/0x360 [ 56.075447][ T5219] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 56.081849][ T5219] ? rcu_is_watching+0x15/0xb0 [ 56.086600][ T5219] ? trace_kmalloc+0x1f/0xd0 [ 56.091175][ T5219] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 56.097747][ T5219] ? kmemdup_noprof+0x45/0x60 [ 56.102413][ T5219] ? bch2_journal_entry_validate+0x6a/0xf0 [ 56.108204][ T5219] bch2_read_superblock_clean+0x207/0x520 [ 56.113913][ T5219] bch2_fs_recovery+0x1f4/0x39c0 [ 56.118840][ T5219] ? mark_lock+0x9a/0x360 [ 56.123155][ T5219] ? __lock_acquire+0x1384/0x2050 [ 56.128171][ T5219] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 56.133539][ T5219] ? __pfx_lock_release+0x10/0x10 [ 56.138554][ T5219] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 56.144176][ T5219] ? __pfx_lock_release+0x10/0x10 [ 56.149194][ T5219] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 56.154818][ T5219] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 56.160534][ T5219] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 56.166156][ T5219] ? llist_reverse_order+0x72/0x90 [ 56.171276][ T5219] bch2_fs_start+0x356/0x5b0 [ 56.175895][ T5219] bch2_fs_get_tree+0xd68/0x1710 [ 56.180844][ T5219] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 56.186218][ T5219] ? smack_fs_context_parse_param+0xff/0x170 [ 56.192201][ T5219] ? generic_parse_monolithic+0x387/0x400 [ 56.197918][ T5219] ? cap_capable+0x1b4/0x250 [ 56.202499][ T5219] ? safesetid_security_capable+0xb2/0x1d0 [ 56.208292][ T5219] vfs_get_tree+0x90/0x2b0 [ 56.212702][ T5219] do_new_mount+0x2be/0xb40 [ 56.217197][ T5219] ? __pfx_do_new_mount+0x10/0x10 [ 56.222214][ T5219] __se_sys_mount+0x2d6/0x3c0 [ 56.226884][ T5219] ? __pfx___se_sys_mount+0x10/0x10 [ 56.232074][ T5219] ? do_syscall_64+0x100/0x230 [ 56.236827][ T5219] ? __x64_sys_mount+0x20/0xc0 [ 56.241580][ T5219] do_syscall_64+0xf3/0x230 [ 56.246069][ T5219] ? clear_bhb_loop+0x35/0x90 [ 56.250730][ T5219] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 56.256624][ T5219] RIP: 0033:0x7f1b940f3c3a [ 56.261041][ T5219] 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 [ 56.280634][ T5219] RSP: 002b:00007ffd6cdb7a78 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 56.289039][ T5219] RAX: ffffffffffffffda RBX: 00007ffd6cdb7a90 RCX: 00007f1b940f3c3a [ 56.296995][ T5219] RDX: 0000000020005d80 RSI: 0000000020000240 RDI: 00007ffd6cdb7a90 [ 56.304953][ T5219] RBP: 0000000000000004 R08: 00007ffd6cdb7ad0 R09: 0000000000005daf [ 56.312908][ T5219] R10: 0000000000000044 R11: 0000000000000282 R12: 0000000000000044 [ 56.320864][ T5219] R13: 00007ffd6cdb7ad0 R14: 0000000000000003 R15: 0000000001000000 [ 56.328828][ T5219]