./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3224039714 <...> Warning: Permanently added '10.128.1.37' (ED25519) to the list of known hosts. execve("./syz-executor3224039714", ["./syz-executor3224039714"], 0x7ffe56ab3960 /* 10 vars */) = 0 brk(NULL) = 0x555577a34000 brk(0x555577a34d00) = 0x555577a34d00 arch_prctl(ARCH_SET_FS, 0x555577a34380) = 0 set_tid_address(0x555577a34650) = 5220 set_robust_list(0x555577a34660, 24) = 0 rseq(0x555577a34ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3224039714", 4096) = 28 getrandom("\xf7\xcb\x3f\xb4\xbe\x06\xe5\x4d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555577a34d00 brk(0x555577a55d00) = 0x555577a55d00 brk(0x555577a56000) = 0x555577a56000 mprotect(0x7fb4474e6000, 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) = 0x7fb43f000000 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(0x7fb43f000000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 71.742491][ T5220] loop0: detected capacity change from 0 to 32768 [ 71.785941][ T5220] ======================================================= [ 71.785941][ T5220] WARNING: The mand mount option has been deprecated and [ 71.785941][ T5220] and is ignored by this kernel. Remove the mand [ 71.785941][ T5220] option from the mount to silence this warning. [ 71.785941][ T5220] ======================================================= [ 71.862783][ T5220] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=compression=lz4,background_compression=gzip,norecovery,recovery_pass_last=fix_reflink_p,nojournal_transaction_names,version_upgrade=none [ 71.882853][ T5220] [ 71.885201][ T5220] ============================================ [ 71.891341][ T5220] WARNING: possible recursive locking detected [ 71.897494][ T5220] 6.12.0-rc2-syzkaller-00100-geb952c47d154 #0 Not tainted [ 71.905126][ T5220] -------------------------------------------- [ 71.911280][ T5220] syz-executor322/5220 is trying to acquire lock: [ 71.917689][ T5220] ffff888076300908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_replicas_entry_validate+0x2a/0x80 [ 71.927559][ T5220] [ 71.927559][ T5220] but task is already holding lock: [ 71.934918][ T5220] ffff888076300908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 71.944699][ T5220] [ 71.944699][ T5220] other info that might help us debug this: [ 71.952775][ T5220] Possible unsafe locking scenario: [ 71.952775][ T5220] [ 71.960252][ T5220] CPU0 [ 71.963632][ T5220] ---- [ 71.966971][ T5220] lock(&c->sb_lock); [ 71.971066][ T5220] lock(&c->sb_lock); [ 71.975145][ T5220] [ 71.975145][ T5220] *** DEADLOCK *** [ 71.975145][ T5220] [ 71.983289][ T5220] May be due to missing lock nesting notation [ 71.983289][ T5220] [ 71.991606][ T5220] 2 locks held by syz-executor322/5220: [ 71.997149][ T5220] #0: ffff888076300278 (&c->state_lock){+.+.}-{3:3}, at: bch2_fs_start+0x45/0x5b0 [ 72.006494][ T5220] #1: ffff888076300908 (&c->sb_lock){+.+.}-{3:3}, at: bch2_read_superblock_clean+0x36/0x520 [ 72.016699][ T5220] [ 72.016699][ T5220] stack backtrace: [ 72.022613][ T5220] CPU: 0 UID: 0 PID: 5220 Comm: syz-executor322 Not tainted 6.12.0-rc2-syzkaller-00100-geb952c47d154 #0 [ 72.033728][ T5220] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 72.043791][ T5220] Call Trace: [ 72.047078][ T5220] [ 72.050011][ T5220] dump_stack_lvl+0x241/0x360 [ 72.054709][ T5220] ? __pfx_dump_stack_lvl+0x10/0x10 [ 72.059913][ T5220] ? __pfx__printk+0x10/0x10 [ 72.064515][ T5220] ? lockdep_unlock+0x16a/0x300 [ 72.069379][ T5220] print_deadlock_bug+0x483/0x620 [ 72.074423][ T5220] validate_chain+0x15e2/0x5920 [ 72.079287][ T5220] ? __pfx___bfs+0x10/0x10 [ 72.083710][ T5220] ? __pfx_validate_chain+0x10/0x10 [ 72.088920][ T5220] ? mark_lock+0x9a/0x360 [ 72.093251][ T5220] ? __lock_acquire+0x1384/0x2050 [ 72.098292][ T5220] ? mark_lock+0x9a/0x360 [ 72.102627][ T5220] __lock_acquire+0x1384/0x2050 [ 72.107500][ T5220] lock_acquire+0x1ed/0x550 [ 72.112015][ T5220] ? bch2_replicas_entry_validate+0x2a/0x80 [ 72.117935][ T5220] ? __pfx_lock_acquire+0x10/0x10 [ 72.122971][ T5220] ? lockdep_hardirqs_on+0x99/0x150 [ 72.128180][ T5220] ? __pfx___might_resched+0x10/0x10 [ 72.133476][ T5220] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 72.139389][ T5220] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 72.145728][ T5220] ? stack_trace_save+0x118/0x1d0 [ 72.150765][ T5220] __mutex_lock+0x136/0xd70 [ 72.155270][ T5220] ? bch2_replicas_entry_validate+0x2a/0x80 [ 72.161168][ T5220] ? kasan_save_track+0x51/0x80 [ 72.166026][ T5220] ? kasan_save_track+0x3f/0x80 [ 72.170883][ T5220] ? __kasan_kmalloc+0x98/0xb0 [ 72.175654][ T5220] ? __kmalloc_node_track_caller_noprof+0x225/0x440 [ 72.182251][ T5220] ? kmemdup_noprof+0x2a/0x60 [ 72.187023][ T5220] ? bch2_read_superblock_clean+0xd6/0x520 [ 72.192833][ T5220] ? bch2_replicas_entry_validate+0x2a/0x80 [ 72.198729][ T5220] ? bch2_fs_start+0x356/0x5b0 [ 72.203500][ T5220] ? __pfx___mutex_lock+0x10/0x10 [ 72.208547][ T5220] ? do_syscall_64+0xf3/0x230 [ 72.213282][ T5220] bch2_replicas_entry_validate+0x2a/0x80 [ 72.219025][ T5220] journal_entry_data_usage_validate+0x2b6/0x690 [ 72.225375][ T5220] ? __pfx_journal_entry_data_usage_validate+0x10/0x10 [ 72.232257][ T5220] ? journal_entry_usage_validate+0xc2/0x360 [ 72.238267][ T5220] ? __pfx_journal_entry_usage_validate+0x10/0x10 [ 72.244691][ T5220] ? rcu_is_watching+0x15/0xb0 [ 72.249464][ T5220] ? trace_kmalloc+0x1f/0xd0 [ 72.254068][ T5220] ? __kmalloc_node_track_caller_noprof+0x242/0x440 [ 72.260670][ T5220] ? kmemdup_noprof+0x45/0x60 [ 72.265361][ T5220] ? bch2_journal_entry_validate+0x6a/0xf0 [ 72.271189][ T5220] bch2_read_superblock_clean+0x207/0x520 [ 72.276945][ T5220] bch2_fs_recovery+0x1f4/0x39c0 [ 72.281900][ T5220] ? mark_lock+0x9a/0x360 [ 72.286256][ T5220] ? __lock_acquire+0x1384/0x2050 [ 72.291713][ T5220] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 72.297118][ T5220] ? __pfx_lock_release+0x10/0x10 [ 72.302166][ T5220] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 72.307818][ T5220] ? __pfx_lock_release+0x10/0x10 [ 72.312860][ T5220] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 72.318504][ T5220] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 72.324237][ T5220] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 72.329885][ T5220] ? llist_reverse_order+0x72/0x90 [ 72.335006][ T5220] bch2_fs_start+0x356/0x5b0 [ 72.339613][ T5220] bch2_fs_get_tree+0xd68/0x1710 [ 72.344585][ T5220] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 72.349976][ T5220] ? generic_parse_monolithic+0x387/0x400 [ 72.355712][ T5220] ? cap_capable+0x1b4/0x250 [ 72.360386][ T5220] ? safesetid_security_capable+0xb2/0x1d0 [ 72.366249][ T5220] vfs_get_tree+0x90/0x2b0 [ 72.370678][ T5220] do_new_mount+0x2be/0xb40 [ 72.375197][ T5220] ? __pfx_do_new_mount+0x10/0x10 [ 72.380236][ T5220] __se_sys_mount+0x2d6/0x3c0 [ 72.384927][ T5220] ? __pfx___se_sys_mount+0x10/0x10 [ 72.390170][ T5220] ? do_syscall_64+0x100/0x230 [ 72.394958][ T5220] ? __x64_sys_mount+0x20/0xc0 [ 72.399927][ T5220] do_syscall_64+0xf3/0x230 [ 72.404449][ T5220] ? clear_bhb_loop+0x35/0x90 [ 72.409140][ T5220] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 72.415071][ T5220] RIP: 0033:0x7fb44746e97a [ 72.419504][ 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 [ 72.439127][ T5220] RSP: 002b:00007ffdd6756a58 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 72.447550][ T5220] RAX: ffffffffffffffda RBX: 00007ffdd6756a70 RCX: 00007fb44746e97a [ 72.455530][ T5220] RDX: 0000000020005d80 RSI: 0000000020000240 RDI: 00007ffdd6756a70 [ 72.463530][ T5220] RBP: 0000000000000004 R08: 00007ffdd6756ab0 R09: 0000000000005daf [ 72.471517][ T5220] R10: 0000000000008044 R11: 0000000000000282 R12: 0000000000008044 [ 72.479498][ T5220] R13: 00007ffdd6756ab0 R14: 0000000000000003 R15: 0000000001000000 [ 72.487570][ T5220] [ 81.771374][ T25] cfg80211: failed to load regulatory.db