./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor398812425
<...>
Warning: Permanently added '10.128.1.184' (ECDSA) to the list of known hosts.
execve("./syz-executor398812425", ["./syz-executor398812425"], 0x7ffd44542140 /* 10 vars */) = 0
brk(NULL) = 0x5555561ef000
brk(0x5555561efc40) = 0x5555561efc40
arch_prctl(ARCH_SET_FS, 0x5555561ef300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor398812425", 4096) = 27
brk(0x555556210c40) = 0x555556210c40
brk(0x555556211000) = 0x555556211000
mprotect(0x7fcfe04bf000, 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
memfd_create("syzkaller", 0) = 3
mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcfd8005000
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"..., 4194304) = 4194304
munmap(0x7fcfd8005000, 4194304) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.264297][ T4993] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4993 'syz-executor398'
ioctl(4, LOOP_SET_FD, 3) = 0
close(3) = 0
mkdir("./file0", 0777) = 0
[ 70.308109][ T4993] loop0: detected capacity change from 0 to 8192
[ 70.319372][ T4993] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025
[ 70.332921][ T4993] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal
[ 70.342362][ T4993] REISERFS (device loop0): using ordered data mode
[ 70.348847][ T4993] reiserfs: using flush barriers
[ 70.354938][ T4993] REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
[ 70.371584][ T4993] REISERFS (device loop0): checking transaction log (loop0)
mount("/dev/loop0", "./file0", "reiserfs", MS_NOEXEC|MS_I_VERSION, "") = 0
openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
chdir("./file0") = 0
ioctl(4, LOOP_CLR_FD) = 0
close(4) = 0
[ 70.412766][ T4993] REISERFS (device loop0): Using r5 hash to sort names
[ 70.420382][ T4993] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
[ 70.447789][ T4993]
[ 70.450182][ T4993] ======================================================
[ 70.457197][ T4993] WARNING: possible circular locking dependency detected
[ 70.464195][ T4993] 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0 Not tainted
[ 70.471191][ T4993] ------------------------------------------------------
[ 70.478182][ T4993] syz-executor398/4993 is trying to acquire lock:
[ 70.484579][ T4993] ffff888078ac8980 (&type->i_mutex_dir_key#6/3){+.+.}-{3:3}, at: open_xa_dir+0x136/0x610
[ 70.494413][ T4993]
[ 70.494413][ T4993] but task is already holding lock:
[ 70.501762][ T4993] ffff8880162fa090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x5f/0xd0
[ 70.511310][ T4993]
[ 70.511310][ T4993] which lock already depends on the new lock.
[ 70.511310][ T4993]
[ 70.521689][ T4993]
[ 70.521689][ T4993] the existing dependency chain (in reverse order) is:
[ 70.530679][ T4993]
[ 70.530679][ T4993] -> #1 (&sbi->lock){+.+.}-{3:3}:
[ 70.537872][ T4993] lock_acquire+0x1e3/0x520
[ 70.542878][ T4993] __mutex_lock_common+0x1d8/0x2530
[ 70.548580][ T4993] mutex_lock_nested+0x1b/0x20
[ 70.553841][ T4993] reiserfs_write_lock+0x7a/0xd0
[ 70.559277][ T4993] reiserfs_mkdir+0x321/0x8f0
[ 70.564453][ T4993] open_xa_dir+0x2cd/0x610
[ 70.569369][ T4993] xattr_lookup+0x24/0x280
[ 70.574288][ T4993] reiserfs_xattr_set_handle+0xfc/0xdc0
[ 70.580331][ T4993] reiserfs_security_write+0x157/0x1d0
[ 70.586287][ T4993] reiserfs_new_inode+0x1631/0x1d40
[ 70.591987][ T4993] reiserfs_create+0x3e7/0x6e0
[ 70.597253][ T4993] path_openat+0x13df/0x3170
[ 70.602342][ T4993] do_filp_open+0x234/0x490
[ 70.607341][ T4993] do_sys_openat2+0x13f/0x500
[ 70.612519][ T4993] __x64_sys_open+0x225/0x270
[ 70.617696][ T4993] do_syscall_64+0x41/0xc0
[ 70.622610][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 70.629002][ T4993]
[ 70.629002][ T4993] -> #0 (&type->i_mutex_dir_key#6/3){+.+.}-{3:3}:
[ 70.637583][ T4993] validate_chain+0x166b/0x58f0
[ 70.642937][ T4993] __lock_acquire+0x1316/0x2070
[ 70.648285][ T4993] lock_acquire+0x1e3/0x520
[ 70.653285][ T4993] down_write_nested+0x3d/0x50
[ 70.658546][ T4993] open_xa_dir+0x136/0x610
[ 70.663460][ T4993] xattr_lookup+0x24/0x280
[ 70.668382][ T4993] reiserfs_xattr_get+0xfd/0x570
[ 70.673818][ T4993] __vfs_getxattr+0x436/0x470
[ 70.679080][ T4993] smk_fetch+0xb1/0x140
[ 70.683738][ T4993] smack_d_instantiate+0x6d9/0xb40
[ 70.689348][ T4993] security_d_instantiate+0x9b/0xf0
[ 70.695053][ T4993] d_instantiate_new+0x65/0x120
[ 70.700437][ T4993] reiserfs_create+0x5cf/0x6e0
[ 70.705703][ T4993] path_openat+0x13df/0x3170
[ 70.710790][ T4993] do_filp_open+0x234/0x490
[ 70.715791][ T4993] do_sys_openat2+0x13f/0x500
[ 70.720966][ T4993] __x64_sys_open+0x225/0x270
[ 70.726140][ T4993] do_syscall_64+0x41/0xc0
[ 70.731056][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 70.737448][ T4993]
[ 70.737448][ T4993] other info that might help us debug this:
[ 70.737448][ T4993]
[ 70.747654][ T4993] Possible unsafe locking scenario:
[ 70.747654][ T4993]
[ 70.755078][ T4993] CPU0 CPU1
[ 70.760421][ T4993] ---- ----
[ 70.765765][ T4993] lock(&sbi->lock);
[ 70.769723][ T4993] lock(&type->i_mutex_dir_key#6/3);
[ 70.777599][ T4993] lock(&sbi->lock);
[ 70.784077][ T4993] lock(&type->i_mutex_dir_key#6/3);
[ 70.789434][ T4993]
[ 70.789434][ T4993] *** DEADLOCK ***
[ 70.789434][ T4993]
[ 70.797555][ T4993] 3 locks held by syz-executor398/4993:
[ 70.803075][ T4993] #0: ffff8880791de460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90
[ 70.812186][ T4993] #1: ffff888078ac82e0 (&type->i_mutex_dir_key#6){+.+.}-{3:3}, at: path_openat+0x7ba/0x3170
[ 70.822341][ T4993] #2: ffff8880162fa090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x5f/0xd0
[ 70.832317][ T4993]
[ 70.832317][ T4993] stack backtrace:
[ 70.838181][ T4993] CPU: 0 PID: 4993 Comm: syz-executor398 Not tainted 6.4.0-rc7-syzkaller-00194-g8a28a0b6f1a1 #0
[ 70.848563][ T4993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
[ 70.858596][ T4993] Call Trace:
[ 70.861859][ T4993] <TASK>
[ 70.864770][ T4993] dump_stack_lvl+0x1e7/0x2d0
[ 70.869425][ T4993] ? nf_tcp_handle_invalid+0x650/0x650
[ 70.874862][ T4993] ? print_circular_bug+0x12b/0x1a0
[ 70.880051][ T4993] check_noncircular+0x2fe/0x3b0
[ 70.884971][ T4993] ? read_lock_is_recursive+0x20/0x20
[ 70.890320][ T4993] ? add_chain_block+0x850/0x850
[ 70.895327][ T4993] ? lockdep_lock+0x123/0x2b0
[ 70.899982][ T4993] ? check_path+0x40/0x40
[ 70.904292][ T4993] ? noop_count+0x30/0x30
[ 70.908602][ T4993] ? _find_first_zero_bit+0xd4/0x100
[ 70.913863][ T4993] validate_chain+0x166b/0x58f0
[ 70.918694][ T4993] ? stack_trace_save+0x1c0/0x1c0
[ 70.923705][ T4993] ? reacquire_held_locks+0x660/0x660
[ 70.929057][ T4993] ? look_up_lock_class+0x77/0x140
[ 70.934149][ T4993] ? register_lock_class+0x104/0x990
[ 70.939413][ T4993] ? __lock_acquire+0x1316/0x2070
[ 70.944416][ T4993] ? is_dynamic_key+0x1f0/0x1f0
[ 70.949253][ T4993] ? mark_lock+0x9a/0x340
[ 70.953567][ T4993] __lock_acquire+0x1316/0x2070
[ 70.958400][ T4993] lock_acquire+0x1e3/0x520
[ 70.962883][ T4993] ? open_xa_dir+0x136/0x610
[ 70.967460][ T4993] ? read_lock_is_recursive+0x20/0x20
[ 70.972811][ T4993] ? lockdep_hardirqs_on+0x98/0x140
[ 70.977990][ T4993] ? __might_sleep+0xc0/0xc0
[ 70.982565][ T4993] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 70.988439][ T4993] ? _raw_spin_unlock+0x40/0x40
[ 70.993268][ T4993] ? stack_trace_snprint+0xf0/0xf0
[ 70.998365][ T4993] down_write_nested+0x3d/0x50
[ 71.003107][ T4993] ? open_xa_dir+0x136/0x610
[ 71.007679][ T4993] open_xa_dir+0x136/0x610
[ 71.012075][ T4993] ? kasan_set_track+0x61/0x70
[ 71.016819][ T4993] ? kasan_set_track+0x4f/0x70
[ 71.021561][ T4993] ? security_d_instantiate+0x9b/0xf0
[ 71.026914][ T4993] ? listxattr_filler+0x500/0x500
[ 71.031934][ T4993] ? do_sys_openat2+0x13f/0x500
[ 71.036940][ T4993] ? __static_call_text_end+0x52188/0x52188
[ 71.042817][ T4993] xattr_lookup+0x24/0x280
[ 71.047216][ T4993] reiserfs_xattr_get+0xfd/0x570
[ 71.052135][ T4993] ? security_get+0x6d/0xc0
[ 71.057139][ T4993] ? security_list+0x80/0x80
[ 71.061708][ T4993] __vfs_getxattr+0x436/0x470
[ 71.066370][ T4993] smk_fetch+0xb1/0x140
[ 71.070591][ T4993] smack_d_instantiate+0x6d9/0xb40
[ 71.075683][ T4993] ? smack_sem_semop+0x230/0x230
[ 71.080603][ T4993] security_d_instantiate+0x9b/0xf0
[ 71.085785][ T4993] d_instantiate_new+0x65/0x120
[ 71.090614][ T4993] reiserfs_create+0x5cf/0x6e0
[ 71.095361][ T4993] ? reiserfs_lookup+0x580/0x580
[ 71.100281][ T4993] ? bpf_lsm_inode_create+0x9/0x10
[ 71.105371][ T4993] ? security_inode_create+0xb8/0x100
[ 71.110732][ T4993] ? reiserfs_lookup+0x580/0x580
[ 71.115649][ T4993] path_openat+0x13df/0x3170
[ 71.120222][ T4993] ? do_filp_open+0x490/0x490
[ 71.124879][ T4993] do_filp_open+0x234/0x490
[ 71.129359][ T4993] ? vfs_tmpfile+0x4a0/0x4a0
[ 71.133932][ T4993] ? _raw_spin_unlock+0x28/0x40
[ 71.138763][ T4993] ? alloc_fd+0x59c/0x640
[ 71.143076][ T4993] do_sys_openat2+0x13f/0x500
[ 71.147734][ T4993] ? print_irqtrace_events+0x220/0x220
[ 71.153174][ T4993] ? do_sys_open+0x230/0x230
[ 71.157742][ T4993] ? lockdep_hardirqs_on+0x98/0x140
[ 71.162922][ T4993] ? _raw_spin_unlock_irq+0x2e/0x50
[ 71.168094][ T4993] ? ptrace_notify+0x278/0x380
[ 71.172836][ T4993] __x64_sys_open+0x225/0x270
[ 71.177493][ T4993] ? do_sys_openat2+0x500/0x500
[ 71.182323][ T4993] ? syscall_enter_from_user_mode+0x32/0x230
[ 71.188285][ T4993] ? syscall_enter_from_user_mode+0x8c/0x230
[ 71.194248][ T4993] do_syscall_64+0x41/0xc0
[ 71.198641][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 71.204516][ T4993] RIP: 0033:0x7fcfe0451789
[ 71.208925][ T4993] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 71.228522][ T4993] RSP: 002b:00007ffef3c055f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[ 71.236920][ T4993] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcfe0451789
[ 71.244872][ T4993] RDX: 0000000000000000 RSI: 0000000000149042 RDI: 00000000200001c0
[ 71.252823][ T4993] RBP: 00007fcfe0411020 R08: 00000000000010ee R09: 0000000000000000
open("./bus", O_RDWR|O_CREAT|O_SYNC|O_LARGEFILE|O_NOATIME, 000) = 4
exit_group(0) = ?
+++ exited with 0 +++
[ 71.260772][ T4993] R10: 00007ffef3c054c0 R11: 0000000000000246 R1