./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2310151676 <...> Warning: Permanently added '10.128.0.150' (ECDSA) to the list of known hosts. execve("./syz-executor2310151676", ["./syz-executor2310151676"], 0x7fff881dbfc0 /* 10 vars */) = 0 brk(NULL) = 0x55555653b000 brk(0x55555653bc40) = 0x55555653bc40 arch_prctl(ARCH_SET_FS, 0x55555653b300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2310151676", 4096) = 28 brk(0x55555655cc40) = 0x55555655cc40 brk(0x55555655d000) = 0x55555655d000 mprotect(0x7fccfdd44000, 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 ftruncate(3, 4194320) = 0 pwrite64(3, "\x8c\xb6\x37", 3, 1) = 3 pwrite64(3, "\x00", 1, 4) = 1 pwrite64(3, "\xcf\x58\xf9\xb6\xb0\x97\x28\x72\x18\xce\x56\xf2\x50\xb4\x26\xfd\x15\x34\xa8\x24\x13\x97\xcf\xab\x6d\x88\x16\xfa\x4b\xb4\x5c\x3f\x9f\xdd\xf8\x76\xb2\x69\xc1\xe8\x59\xce\xbe\x21\xb7\xd9\x24\x4b\x1f\xd8\xf4\x11\xc2\xe7\x5b\x40\x44\x0e\x6e\x93\x65\x6e\xcb\xb4\x9b\xee\xac\x1c\x75\x71\x47\x8c\xa3\xc9\x9e\xc9\x07\x4a\xeb\xad\xf4\x46\x2d\x55\x73\x8c\xec\xdf\x1a\xe2\x86\x2f\x84\x19\x26\xf1\x5b\x27\x70\x6d"..., 205, 7) = 205 pwrite64(3, "\x00\x04\x00\x00\xec\x01\x00\x00\x13\x02\x00\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x61\x1c\xad\x49\xe1\x00\x00\x00\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x10\xcc\x03\x10\x00\x01\x00\x52\x65\x49\x73\x45\x72\x33\x46\x73\x00\x00\x00\x02\x00\x00\x00\x02\x00\x01\x00\x02\x00\x01\x02\x00\x00\x00\x00\x01\x00\x00\x00\x12\x31\x2a\x23\x12\x12\x33\x12\x33\x12\x31\x12\x34\x13\x41\x24"..., 128, 65536) = 128 pwrite64(3, "\x00\x00\x00\x00\x00\x00\x05\x00\x08\x00\x00\x00\x01\x10\x00\x00\x03\x10\x00\x48\xb2\x56\x07\x81\x8b\x96\xe2\x7e\xa5\x80\x19\x56\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9e\x08", 45, 65728) = 45 pwrite64(3, "\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x12\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x61\x1c\xad\x49\xe1\x00\x00\x00\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 64, 2170880) = 64 pwrite64(3, "\x01\x00\x02\x00\x5c\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2c\x00\xd4\x0f\x01\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\xf4\x01\x00\x00\x02\x00\x30\x00\xa4\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 96, 2174976) = 96 pwrite64(3, "\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x28\x00\x04\x00\x02\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x20\x00\x04\x00\x2e\x2e\x00\x00\x00\x00\x00\x00\x2e\x00\xe2\xff\x00\x00\x00\x00\xed\x41\x00\x00\x03\x00\x00\x3a\xc1\x65\x5f\x3a\xc1\x65\x5f\x3a\xc1\x65\xea\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\xff", 82, 2178976) = 82 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 mkdir("./file0", 0777) = 0 [ 46.278284][ T3604] loop0: detected capacity change from 0 to 8192 [ 46.288670][ T3604] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 46.301963][ T3604] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 46.311367][ T3604] REISERFS (device loop0): using ordered data mode [ 46.317894][ T3604] reiserfs: using flush barriers mount("/dev/loop0", "./file0", "reiserfs", MS_NOSUID|MS_NOEXEC|MS_NOATIME|MS_RELATIME, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 close(3) = 0 ioctl(5, FS_IOC_MEASURE_VERITY, 0) = -1 ENOTTY (Inappropriate ioctl for device) [ 46.323788][ T3604] 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 [ 46.340642][ T3604] REISERFS (device loop0): checking transaction log (loop0) [ 46.349731][ T3604] REISERFS (device loop0): Using rupasov hash to sort names [ 46.357909][ T3604] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 46.373428][ T3604] [ 46.375777][ T3604] ====================================================== [ 46.382792][ T3604] WARNING: possible circular locking dependency detected [ 46.389807][ T3604] 6.1.0-rc4-syzkaller-00372-gaf7a05689189 #0 Not tainted [ 46.396808][ T3604] ------------------------------------------------------ [ 46.403803][ T3604] syz-executor231/3604 is trying to acquire lock: [ 46.410194][ T3604] ffffc90003a910f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x293/0x10e0 [ 46.419927][ T3604] [ 46.419927][ T3604] but task is already holding lock: [ 46.427269][ T3604] ffff888021f9c460 (sb_writers#9){.+.+}-{0:0}, at: reiserfs_ioctl+0x19e/0x320 [ 46.436154][ T3604] [ 46.436154][ T3604] which lock already depends on the new lock. [ 46.436154][ T3604] [ 46.446536][ T3604] [ 46.446536][ T3604] the existing dependency chain (in reverse order) is: [ 46.455528][ T3604] [ 46.455528][ T3604] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 46.462986][ T3604] mnt_want_write_file+0x8e/0x590 [ 46.468518][ T3604] reiserfs_ioctl+0x19e/0x320 [ 46.473702][ T3604] __x64_sys_ioctl+0x193/0x200 [ 46.478976][ T3604] do_syscall_64+0x35/0xb0 [ 46.483922][ T3604] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.490352][ T3604] [ 46.490352][ T3604] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 46.497549][ T3604] __mutex_lock+0x12f/0x1350 [ 46.502643][ T3604] reiserfs_write_lock_nested+0x65/0xe0 [ 46.508704][ T3604] do_journal_begin_r+0x29d/0x10e0 [ 46.514329][ T3604] journal_begin+0x162/0x400 [ 46.519427][ T3604] reiserfs_fill_super+0x1c2b/0x2e90 [ 46.525224][ T3604] mount_bdev+0x34d/0x410 [ 46.530061][ T3604] legacy_get_tree+0x105/0x220 [ 46.535416][ T3604] vfs_get_tree+0x89/0x2f0 [ 46.540447][ T3604] path_mount+0x1326/0x1e20 [ 46.545461][ T3604] __x64_sys_mount+0x27f/0x300 [ 46.550733][ T3604] do_syscall_64+0x35/0xb0 [ 46.555661][ T3604] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.562063][ T3604] [ 46.562063][ T3604] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 46.569863][ T3604] __lock_acquire+0x2a43/0x56d0 [ 46.575223][ T3604] lock_acquire+0x1df/0x630 [ 46.580230][ T3604] __mutex_lock+0x12f/0x1350 [ 46.585327][ T3604] do_journal_begin_r+0x293/0x10e0 [ 46.590968][ T3604] journal_begin+0x162/0x400 [ 46.596078][ T3604] reiserfs_dirty_inode+0xff/0x250 [ 46.601700][ T3604] __mark_inode_dirty+0x243/0x11d0 [ 46.607321][ T3604] reiserfs_ioctl+0x2c6/0x320 [ 46.612505][ T3604] __x64_sys_ioctl+0x193/0x200 [ 46.617779][ T3604] do_syscall_64+0x35/0xb0 [ 46.622708][ T3604] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.629112][ T3604] [ 46.629112][ T3604] other info that might help us debug this: [ 46.629112][ T3604] [ 46.639320][ T3604] Chain exists of: [ 46.639320][ T3604] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 46.639320][ T3604] [ 46.651819][ T3604] Possible unsafe locking scenario: [ 46.651819][ T3604] [ 46.659251][ T3604] CPU0 CPU1 [ 46.664621][ T3604] ---- ---- [ 46.669964][ T3604] lock(sb_writers#9); [ 46.674109][ T3604] lock(&sbi->lock); [ 46.680591][ T3604] lock(sb_writers#9); [ 46.687250][ T3604] lock(&journal->j_mutex); [ 46.691824][ T3604] [ 46.691824][ T3604] *** DEADLOCK *** [ 46.691824][ T3604] [ 46.699946][ T3604] 1 lock held by syz-executor231/3604: [ 46.705384][ T3604] #0: ffff888021f9c460 (sb_writers#9){.+.+}-{0:0}, at: reiserfs_ioctl+0x19e/0x320 [ 46.714686][ T3604] [ 46.714686][ T3604] stack backtrace: [ 46.720577][ T3604] CPU: 1 PID: 3604 Comm: syz-executor231 Not tainted 6.1.0-rc4-syzkaller-00372-gaf7a05689189 #0 [ 46.730983][ T3604] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 46.741024][ T3604] Call Trace: [ 46.744288][ T3604] [ 46.747202][ T3604] dump_stack_lvl+0xcd/0x134 [ 46.751788][ T3604] check_noncircular+0x25f/0x2e0 [ 46.756711][ T3604] ? print_circular_bug+0x1e0/0x1e0 [ 46.761894][ T3604] ? lock_release+0x5cb/0x810 [ 46.766557][ T3604] ? is_bpf_text_address+0x77/0x170 [ 46.771747][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 46.776585][ T3604] __lock_acquire+0x2a43/0x56d0 [ 46.781424][ T3604] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 46.787392][ T3604] lock_acquire+0x1df/0x630 [ 46.791882][ T3604] ? do_journal_begin_r+0x293/0x10e0 [ 46.797157][ T3604] ? lock_release+0x810/0x810 [ 46.801828][ T3604] __mutex_lock+0x12f/0x1350 [ 46.806405][ T3604] ? do_journal_begin_r+0x293/0x10e0 [ 46.811703][ T3604] ? do_journal_begin_r+0x293/0x10e0 [ 46.816980][ T3604] ? mutex_lock_io_nested+0x1190/0x1190 [ 46.822515][ T3604] ? wait_for_completion_io_timeout+0x20/0x20 [ 46.828569][ T3604] ? lockdep_unlock+0x11b/0x290 [ 46.833403][ T3604] ? __lock_acquire+0x2567/0x56d0 [ 46.838416][ T3604] do_journal_begin_r+0x293/0x10e0 [ 46.843518][ T3604] ? do_journal_end+0x4af0/0x4af0 [ 46.848529][ T3604] ? find_held_lock+0x2d/0x110 [ 46.853280][ T3604] ? current_time+0x72/0x2c0 [ 46.857861][ T3604] journal_begin+0x162/0x400 [ 46.862440][ T3604] reiserfs_dirty_inode+0xff/0x250 [ 46.867547][ T3604] ? reiserfs_unfreeze+0xa0/0xa0 [ 46.872474][ T3604] ? ktime_get_coarse_real_ts64+0x1b7/0x200 [ 46.878364][ T3604] ? reiserfs_unfreeze+0xa0/0xa0 [ 46.883293][ T3604] __mark_inode_dirty+0x243/0x11d0 [ 46.888396][ T3604] reiserfs_ioctl+0x2c6/0x320 [ 46.893063][ T3604] ? reiserfs_fileattr_set+0x570/0x570 [ 46.898515][ T3604] __x64_sys_ioctl+0x193/0x200 [ 46.903273][ T3604] do_syscall_64+0x35/0xb0 [ 46.907695][ T3604] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 46.913592][ T3604] RIP: 0033:0x7fccfdcd80c9 [ 46.917993][ T3604] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 [ 46.937592][ T3604] RSP: 002b:00007ffd6a906798 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.945994][ T3604] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fccfdcd80c9 [ 46.953954][ T3604] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005 [ 46.961912][ T3604] RBP: 00007fccfdc978c0 R08: 0000000000000000 R09: 0000000000000000 [ 46.969870][ T3604] R10: 000055555653b2c0 R11: 0000000000000246 R12: 00007fccfdc97950 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 46.977826][ T3604] R13: 000000000000000