./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3355878432 <...> Warning: Permanently added '10.128.1.233' (ED25519) to the list of known hosts. execve("./syz-executor3355878432", ["./syz-executor3355878432"], 0x7ffc7fa94570 /* 10 vars */) = 0 brk(NULL) = 0x5555628d7000 brk(0x5555628d7d00) = 0x5555628d7d00 arch_prctl(ARCH_SET_FS, 0x5555628d7380) = 0 set_tid_address(0x5555628d7650) = 5219 set_robust_list(0x5555628d7660, 24) = 0 rseq(0x5555628d7ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3355878432", 4096) = 28 getrandom("\xd8\x60\x54\x19\x0d\x3c\x22\xd5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555628d7d00 brk(0x5555628f8d00) = 0x5555628f8d00 brk(0x5555628f9000) = 0x5555628f9000 mprotect(0x7f2c63066000, 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) = 0x7f2c5aa00000 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(0x7f2c5aa00000, 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 [ 59.255231][ T5219] loop0: detected capacity change from 0 to 32768 [ 59.298484][ T5219] ======================================================= [ 59.298484][ T5219] WARNING: The mand mount option has been deprecated and [ 59.298484][ T5219] and is ignored by this kernel. Remove the mand [ 59.298484][ T5219] option from the mount to silence this warning. [ 59.298484][ T5219] ======================================================= [ 59.386414][ 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 [ 59.405359][ T5219] [ 59.407689][ T5219] ============================================ [ 59.413844][ T5219] WARNING: possible recursive locking detected [ 59.420042][ T5219] 6.12.0-rc1-syzkaller-00046-g7ec462100ef9 #0 Not tainted [ 59.427172][ T5219] -------------------------------------------- [ 59.433308][ T5219] syz-executor335/5219 is trying to acquire lock: [ 59.439710][ T5219] ffff888079600908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 59.449572][ T5219] [ 59.449572][ T5219] but task is already holding lock: [ 59.456926][ T5219] ffff888079600908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 59.466685][ T5219] [ 59.466685][ T5219] other info that might help us debug this: [ 59.474755][ T5219] Possible unsafe locking scenario: [ 59.474755][ T5219] [ 59.482206][ T5219] CPU0 [ 59.485843][ T5219] ---- [ 59.489111][ T5219] lock(&c->sb_lock); [ 59.493176][ T5219] lock(&c->sb_lock); [ 59.497235][ T5219] [ 59.497235][ T5219] *** DEADLOCK *** [ 59.497235][ T5219] [ 59.505365][ T5219] May be due to missing lock nesting notation [ 59.505365][ T5219] [ 59.513672][ T5219] 2 locks held by syz-executor335/5219: [ 59.519213][ T5219] #0: ffff888079600278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 59.528525][ T5219] #1: ffff888079600908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 59.538698][ T5219] [ 59.538698][ T5219] stack backtrace: [ 59.544586][ T5219] CPU: 0 UID: 0 PID: 5219 Comm: syz-executor335 Not tainted 6.12.0-rc1-syzkaller-00046-g7ec462100ef9 #0 [ 59.555701][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 59.565780][ T5219] Call Trace: [ 59.569063][ T5219] [ 59.572001][ T5219] dump_stack_lvl+0x241/0x360 [ 59.576715][ T5219] ? __pfx_dump_stack_lvl+0x10/0x10 [ 59.581911][ T5219] ? __pfx__printk+0x10/0x10 [ 59.586586][ T5219] ? lockdep_unlock+0x16a/0x300 [ 59.591442][ T5219] print_deadlock_bug+0x483/0x620 [ 59.596463][ T5219] validate_chain+0x15e2/0x5920 [ 59.601308][ T5219] ? __pfx___bfs+0x10/0x10 [ 59.605722][ T5219] ? __pfx_validate_chain+0x10/0x10 [ 59.610918][ T5219] ? mark_lock+0x9a/0x360 [ 59.615242][ T5219] ? __lock_acquire+0x1384/0x2050 [ 59.620263][ T5219] ? mark_lock+0x9a/0x360 [ 59.624585][ T5219] __lock_acquire+0x1384/0x2050 [ 59.629493][ T5219] lock_acquire+0x1ed/0x550 [ 59.634007][ T5219] ? bch2_replicas_entry_validate+0x2a/0x80 [ 59.639907][ T5219] ? __pfx_lock_acquire+0x10/0x10 [ 59.644935][ T5219] ? lockdep_hardirqs_on+0x99/0x150 [ 59.650133][ T5219] ? __pfx___might_resched+0x10/0x10 [ 59.655415][ T5219] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 59.661306][ T5219] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 59.667626][ T5219] ? stack_trace_save+0x118/0x1d0 [ 59.672647][ T5219] __mutex_lock+0x136/0xd70 [ 59.677147][ T5219] ? bch2_replicas_entry_validate+0x2a/0x80 [ 59.683291][ T5219] ? kasan_save_track+0x51/0x80 [ 59.688137][ T5219] ? kasan_save_track+0x3f/0x80 [ 59.692981][ T5219] ? __kasan_kmalloc+0x98/0xb0 [ 59.697742][ T5219] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 59.704319][ T5219] ? kmemdup_noprof+0x2a/0x60 [ 59.708989][ T5219] ? bch2_read_superblock_clean+0xd6/0x520 [ 59.714808][ T5219] ? bch2_replicas_entry_validate+0x2a/0x80 [ 59.720696][ T5219] ? bch2_fs_start+0x356/0x5b0 [ 59.725461][ T5219] ? __pfx___mutex_lock+0x10/0x10 [ 59.730483][ T5219] ? do_syscall_64+0xf3/0x230 [ 59.735157][ T5219] bch2_replicas_entry_validate+0x2a/0x80 [ 59.740869][ T5219] journal_entry_data_usage_validate+0x2b6/0x690 [ 59.747193][ T5219] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 59.754036][ T5219] ? journal_entry_usage_validate+0xc2/0x360 [ 59.760016][ T5219] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 59.766424][ T5219] ? rcu_is_watching+0x15/0xb0 [ 59.771186][ T5219] ? trace_kmalloc+0x1f/0xd0 [ 59.775765][ T5219] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 59.782346][ T5219] ? kmemdup_noprof+0x45/0x60 [ 59.787106][ T5219] ? bch2_journal_entry_validate+0x6a/0xf0 [ 59.792904][ T5219] bch2_read_superblock_clean+0x207/0x520 [ 59.798619][ T5219] bch2_fs_recovery+0x1f4/0x39c0 [ 59.803552][ T5219] ? mark_lock+0x9a/0x360 [ 59.807873][ T5219] ? __lock_acquire+0x1384/0x2050 [ 59.812890][ T5219] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 59.818267][ T5219] ? __pfx_lock_release+0x10/0x10 [ 59.823306][ T5219] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 59.828956][ T5219] ? __pfx_lock_release+0x10/0x10 [ 59.834007][ T5219] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 59.839652][ T5219] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 59.845370][ T5219] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 59.851021][ T5219] ? llist_reverse_order+0x72/0x90 [ 59.856127][ T5219] bch2_fs_start+0x356/0x5b0 [ 59.860715][ T5219] bch2_fs_get_tree+0xd68/0x1710 [ 59.865660][ T5219] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 59.871026][ T5219] ? smack_fs_context_parse_param+0xff/0x170 [ 59.877012][ T5219] ? generic_parse_monolithic+0x387/0x400 [ 59.882728][ T5219] ? cap_capable+0x1b4/0x250 [ 59.887309][ T5219] ? safesetid_security_capable+0xb2/0x1d0 [ 59.893111][ T5219] vfs_get_tree+0x90/0x2b0 [ 59.897523][ T5219] do_new_mount+0x2be/0xb40 [ 59.902021][ T5219] ? __pfx_do_new_mount+0x10/0x10 [ 59.907053][ T5219] __se_sys_mount+0x2d6/0x3c0 [ 59.911726][ T5219] ? __pfx___se_sys_mount+0x10/0x10 [ 59.916919][ T5219] ? do_syscall_64+0x100/0x230 [ 59.921677][ T5219] ? __x64_sys_mount+0x20/0xc0 [ 59.926437][ T5219] do_syscall_64+0xf3/0x230 [ 59.930933][ T5219] ? clear_bhb_loop+0x35/0x90 [ 59.935600][ T5219] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 59.941502][ T5219] RIP: 0033:0x7f2c62feec7a [ 59.945913][ 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 [ 59.965607][ T5219] RSP: 002b:00007ffe18072ef8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 59.974021][ T5219] RAX: ffffffffffffffda RBX: 00007ffe18072f10 RCX: 00007f2c62feec7a [ 59.981984][ T5219] RDX: 0000000020005d80 RSI: 0000000020000240 RDI: 00007ffe18072f10 [ 59.989955][ T5219] RBP: 0000000000000004 R08: 00007ffe18072f50 R09: 0000000000005de9 [ 59.997917][ T5219] R10: 0000000000000044 R11: 0000000000000282 R12: 0000000000000044 [ 60.005877][ T5219] R13: 00007ffe18072f50 R14: 0000000000000003 R15: 0000000001000000 [ 60.013864][ T5219]