./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2156007348 <...> Warning: Permanently added '10.128.0.113' (ED25519) to the list of known hosts. execve("./syz-executor2156007348", ["./syz-executor2156007348"], 0x7ffdd8744f50 /* 10 vars */) = 0 brk(NULL) = 0x55558e557000 brk(0x55558e557d00) = 0x55558e557d00 arch_prctl(ARCH_SET_FS, 0x55558e557380) = 0 set_tid_address(0x55558e557650) = 5220 set_robust_list(0x55558e557660, 24) = 0 rseq(0x55558e557ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2156007348", 4096) = 28 getrandom("\x6a\x7e\xb4\x23\x78\x44\x6e\x81", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558e557d00 brk(0x55558e578d00) = 0x55558e578d00 brk(0x55558e579000) = 0x55558e579000 mprotect(0x7fda49b59000, 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) = 0x7fda41600000 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(0x7fda41600000, 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 [ 87.991492][ T5220] loop0: detected capacity change from 0 to 32768 [ 88.035762][ T5220] ======================================================= [ 88.035762][ T5220] WARNING: The mand mount option has been deprecated and [ 88.035762][ T5220] and is ignored by this kernel. Remove the mand [ 88.035762][ T5220] option from the mount to silence this warning. [ 88.035762][ T5220] ======================================================= [ 88.113766][ T5220] 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 [ 88.133210][ T5220] [ 88.135720][ T5220] ============================================ [ 88.141960][ T5220] WARNING: possible recursive locking detected [ 88.148223][ T5220] 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0 Not tainted [ 88.155466][ T5220] -------------------------------------------- [ 88.161631][ T5220] syz-executor215/5220 is trying to acquire lock: [ 88.168088][ T5220] ffff888072380908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 88.177992][ T5220] [ 88.177992][ T5220] but task is already holding lock: [ 88.185363][ T5220] ffff888072380908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 88.195581][ T5220] [ 88.195581][ T5220] other info that might help us debug this: [ 88.203689][ T5220] Possible unsafe locking scenario: [ 88.203689][ T5220] [ 88.211154][ T5220] CPU0 [ 88.214461][ T5220] ---- [ 88.217780][ T5220] lock(&c->sb_lock); [ 88.221906][ T5220] lock(&c->sb_lock); [ 88.226009][ T5220] [ 88.226009][ T5220] *** DEADLOCK *** [ 88.226009][ T5220] [ 88.234171][ T5220] May be due to missing lock nesting notation [ 88.234171][ T5220] [ 88.242504][ T5220] 2 locks held by syz-executor215/5220: [ 88.248067][ T5220] #0: ffff888072380278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 88.257427][ T5220] #1: ffff888072380908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 88.267665][ T5220] [ 88.267665][ T5220] stack backtrace: [ 88.273585][ T5220] CPU: 1 UID: 0 PID: 5220 Comm: syz-executor215 Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0 [ 88.284956][ T5220] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 88.295241][ T5220] Call Trace: [ 88.298557][ T5220] [ 88.301512][ T5220] dump_stack_lvl+0x241/0x360 [ 88.306504][ T5220] ? __pfx_dump_stack_lvl+0x10/0x10 [ 88.311780][ T5220] ? __pfx__printk+0x10/0x10 [ 88.316495][ T5220] ? lockdep_unlock+0x16a/0x300 [ 88.321482][ T5220] print_deadlock_bug+0x483/0x620 [ 88.327136][ T5220] validate_chain+0x15e2/0x5920 [ 88.332129][ T5220] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 88.338116][ T5220] ? mark_lock+0x9a/0x360 [ 88.342495][ T5220] ? __pfx_validate_chain+0x10/0x10 [ 88.349191][ T5220] ? __lock_acquire+0x1384/0x2050 [ 88.354752][ T5220] ? mark_lock+0x9a/0x360 [ 88.359653][ T5220] ? __lock_acquire+0x1384/0x2050 [ 88.365052][ T5220] ? mark_lock+0x9a/0x360 [ 88.369853][ T5220] __lock_acquire+0x1384/0x2050 [ 88.374846][ T5220] lock_acquire+0x1ed/0x550 [ 88.379509][ T5220] ? bch2_replicas_entry_validate+0x2a/0x80 [ 88.385447][ T5220] ? __pfx_lock_acquire+0x10/0x10 [ 88.390967][ T5220] ? lockdep_hardirqs_on+0x99/0x150 [ 88.396600][ T5220] ? __pfx___might_resched+0x10/0x10 [ 88.402358][ T5220] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 88.408317][ T5220] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 88.414714][ T5220] ? stack_trace_save+0x118/0x1d0 [ 88.419974][ T5220] __mutex_lock+0x136/0xd70 [ 88.425329][ T5220] ? bch2_replicas_entry_validate+0x2a/0x80 [ 88.433580][ T5220] ? kasan_save_track+0x51/0x80 [ 88.439786][ T5220] ? kasan_save_track+0x3f/0x80 [ 88.444682][ T5220] ? __kasan_kmalloc+0x98/0xb0 [ 88.449558][ T5220] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 88.456695][ T5220] ? kmemdup_noprof+0x2a/0x60 [ 88.461664][ T5220] ? bch2_read_superblock_clean+0xd6/0x520 [ 88.467497][ T5220] ? bch2_replicas_entry_validate+0x2a/0x80 [ 88.473654][ T5220] ? bch2_fs_start+0x356/0x5b0 [ 88.478987][ T5220] ? __pfx___mutex_lock+0x10/0x10 [ 88.484188][ T5220] ? do_syscall_64+0xf3/0x230 [ 88.488911][ T5220] bch2_replicas_entry_validate+0x2a/0x80 [ 88.494667][ T5220] journal_entry_data_usage_validate+0x2b6/0x690 [ 88.501212][ T5220] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 88.508190][ T5220] ? journal_entry_usage_validate+0xc2/0x360 [ 88.514211][ T5220] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 88.520646][ T5220] ? rcu_is_watching+0x15/0xb0 [ 88.526163][ T5220] ? trace_kmalloc+0x1f/0xd0 [ 88.530874][ T5220] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 88.537598][ T5220] ? kmemdup_noprof+0x45/0x60 [ 88.542338][ T5220] ? bch2_journal_entry_validate+0x6a/0xf0 [ 88.548286][ T5220] bch2_read_superblock_clean+0x207/0x520 [ 88.554045][ T5220] bch2_fs_recovery+0x1f4/0x39c0 [ 88.559176][ T5220] ? mark_lock+0x9a/0x360 [ 88.563832][ T5220] ? __lock_acquire+0x1384/0x2050 [ 88.569796][ T5220] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 88.575331][ T5220] ? __pfx_lock_release+0x10/0x10 [ 88.580842][ T5220] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 88.586668][ T5220] ? __pfx_lock_release+0x10/0x10 [ 88.592022][ T5220] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 88.598043][ T5220] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 88.603986][ T5220] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 88.609859][ T5220] ? llist_reverse_order+0x72/0x90 [ 88.615086][ T5220] bch2_fs_start+0x356/0x5b0 [ 88.620253][ T5220] bch2_fs_get_tree+0xd68/0x1710 [ 88.625864][ T5220] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 88.631275][ T5220] ? smack_fs_context_parse_param+0xff/0x170 [ 88.637597][ T5220] ? generic_parse_monolithic+0x387/0x400 [ 88.643934][ T5220] ? cap_capable+0x1b4/0x250 [ 88.648633][ T5220] ? safesetid_security_capable+0xb2/0x1d0 [ 88.654483][ T5220] vfs_get_tree+0x90/0x2b0 [ 88.659741][ T5220] do_new_mount+0x2be/0xb40 [ 88.664395][ T5220] ? __pfx_do_new_mount+0x10/0x10 [ 88.669744][ T5220] __se_sys_mount+0x2d6/0x3c0 [ 88.675121][ T5220] ? __pfx___se_sys_mount+0x10/0x10 [ 88.680343][ T5220] ? do_syscall_64+0x100/0x230 [ 88.685139][ T5220] ? __x64_sys_mount+0x20/0xc0 [ 88.689968][ T5220] do_syscall_64+0xf3/0x230 [ 88.694721][ T5220] ? clear_bhb_loop+0x35/0x90 [ 88.700920][ T5220] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 88.707205][ T5220] RIP: 0033:0x7fda49ae1c3a [ 88.713745][ T5220] 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 [ 88.734620][ T5220] RSP: 002b:00007ffda0e08598 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 88.743154][ T5220] RAX: ffffffffffffffda RBX: 00007ffda0e085b0 RCX: 00007fda49ae1c3a [ 88.751675][ T5220] RDX: 0000000020005d80 RSI: 0000000020000240 RDI: 00007ffda0e085b0 [ 88.762544][ T5220] RBP: 0000000000000004 R08: 00007ffda0e085f0 R09: 0000000000005de9 [ 88.770643][ T5220] R10: 000000000001004c R11: 0000000000000282 R12: 000000000001004c [ 88.779077][ T5220] R13: 00007ffda0e085f0 R14: 0000000000000003 R15: 0000000001000000 [ 88.787611][ T5220] [ 92.321751][ T937] cfg80211: failed to load regulatory.db