./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor387947250 <...> forked to background, child pid 3185 no interfaces have a carrier [ 24.297258][ T3186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 24.309657][ T3186] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts. execve("./syz-executor387947250", ["./syz-executor387947250"], 0x7ffe407d8c60 /* 10 vars */) = 0 brk(NULL) = 0x55555724c000 brk(0x55555724cc40) = 0x55555724cc40 arch_prctl(ARCH_SET_FS, 0x55555724c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor387947250", 4096) = 27 brk(0x55555726dc40) = 0x55555726dc40 brk(0x55555726e000) = 0x55555726e000 mprotect(0x7f84a7600000, 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\x84\x09", 3, 4) = 3 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\xf4\x50\x98\x12\x2a\x16\x2b\x00\x17\x31\xda\x04\x98\x0e\x00\x00\x66\xd9\xca\x9b\x08\x8f\x7a\xfe\xe7\x42\xa2\xaa\xc9\x3d\x10\x58\x68\xc7\x2e\xdb"..., 185, 2170880) = 185 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 syzkaller login: [ 45.315067][ T3606] loop0: detected capacity change from 0 to 8192 [ 45.326053][ T3606] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 45.339188][ T3606] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 45.348548][ T3606] REISERFS (device loop0): using ordered data mode [ 45.355058][ T3606] 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 open(NULL, O_RDONLY) = -1 EFAULT (Bad address) ioctl(-1, _IOC(_IOC_WRITE, 0x66, 0x8, 0x28), 0) = -1 EBADF (Bad file descriptor) [ 45.361169][ T3606] 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 [ 45.377511][ T3606] REISERFS (device loop0): checking transaction log (loop0) [ 45.386826][ T3606] REISERFS (device loop0): Using rupasov hash to sort names [ 45.394678][ T3606] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 45.412432][ T3606] [ 45.414788][ T3606] ====================================================== [ 45.421800][ T3606] WARNING: possible circular locking dependency detected [ 45.428825][ T3606] 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 Not tainted [ 45.435869][ T3606] ------------------------------------------------------ [ 45.442864][ T3606] syz-executor387/3606 is trying to acquire lock: [ 45.449952][ T3606] ffffc90003c410f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x293/0x10e0 [ 45.459933][ T3606] [ 45.459933][ T3606] but task is already holding lock: [ 45.467274][ T3606] ffff8880760ce460 (sb_writers#9){.+.+}-{0:0}, at: reiserfs_ioctl+0x19e/0x320 [ 45.476146][ T3606] [ 45.476146][ T3606] which lock already depends on the new lock. [ 45.476146][ T3606] [ 45.486525][ T3606] [ 45.486525][ T3606] the existing dependency chain (in reverse order) is: [ 45.495526][ T3606] [ 45.495526][ T3606] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 45.503006][ T3606] mnt_want_write_file+0x8e/0x590 [ 45.508535][ T3606] reiserfs_ioctl+0x19e/0x320 [ 45.513719][ T3606] __x64_sys_ioctl+0x193/0x200 [ 45.518991][ T3606] do_syscall_64+0x35/0xb0 [ 45.523936][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.530345][ T3606] [ 45.530345][ T3606] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 45.537624][ T3606] __mutex_lock+0x12f/0x1350 [ 45.542725][ T3606] reiserfs_write_lock_nested+0x65/0xe0 [ 45.548960][ T3606] do_journal_begin_r+0x29d/0x10e0 [ 45.554584][ T3606] journal_begin+0x162/0x400 [ 45.559688][ T3606] reiserfs_fill_super+0x1c2b/0x2e90 [ 45.565492][ T3606] mount_bdev+0x34d/0x410 [ 45.570358][ T3606] legacy_get_tree+0x105/0x220 [ 45.575638][ T3606] vfs_get_tree+0x89/0x2f0 [ 45.580560][ T3606] path_mount+0x1326/0x1e20 [ 45.585571][ T3606] __x64_sys_mount+0x27f/0x300 [ 45.590841][ T3606] do_syscall_64+0x35/0xb0 [ 45.595776][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.602272][ T3606] [ 45.602272][ T3606] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 45.610074][ T3606] __lock_acquire+0x2a43/0x56d0 [ 45.615461][ T3606] lock_acquire+0x1df/0x630 [ 45.620478][ T3606] __mutex_lock+0x12f/0x1350 [ 45.625580][ T3606] do_journal_begin_r+0x293/0x10e0 [ 45.631207][ T3606] journal_begin+0x162/0x400 [ 45.636396][ T3606] reiserfs_dirty_inode+0xff/0x250 [ 45.642304][ T3606] __mark_inode_dirty+0x243/0x11d0 [ 45.647929][ T3606] reiserfs_ioctl+0x2c6/0x320 [ 45.653118][ T3606] __x64_sys_ioctl+0x193/0x200 [ 45.658394][ T3606] do_syscall_64+0x35/0xb0 [ 45.663328][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.669734][ T3606] [ 45.669734][ T3606] other info that might help us debug this: [ 45.669734][ T3606] [ 45.679942][ T3606] Chain exists of: [ 45.679942][ T3606] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 45.679942][ T3606] [ 45.692531][ T3606] Possible unsafe locking scenario: [ 45.692531][ T3606] [ 45.699961][ T3606] CPU0 CPU1 [ 45.705310][ T3606] ---- ---- [ 45.710658][ T3606] lock(sb_writers#9); [ 45.714805][ T3606] lock(&sbi->lock); [ 45.721293][ T3606] lock(sb_writers#9); [ 45.727959][ T3606] lock(&journal->j_mutex); [ 45.732534][ T3606] [ 45.732534][ T3606] *** DEADLOCK *** [ 45.732534][ T3606] [ 45.740660][ T3606] 1 lock held by syz-executor387/3606: [ 45.746098][ T3606] #0: ffff8880760ce460 (sb_writers#9){.+.+}-{0:0}, at: reiserfs_ioctl+0x19e/0x320 [ 45.755440][ T3606] [ 45.755440][ T3606] stack backtrace: [ 45.761317][ T3606] CPU: 1 PID: 3606 Comm: syz-executor387 Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 [ 45.771801][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 45.781846][ T3606] Call Trace: [ 45.785116][ T3606] [ 45.788039][ T3606] dump_stack_lvl+0xcd/0x134 [ 45.792631][ T3606] check_noncircular+0x25f/0x2e0 [ 45.797558][ T3606] ? print_circular_bug+0x1e0/0x1e0 [ 45.802745][ T3606] ? lock_release+0x5cb/0x810 [ 45.807410][ T3606] ? is_bpf_text_address+0x77/0x170 [ 45.812603][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 45.817446][ T3606] __lock_acquire+0x2a43/0x56d0 [ 45.822288][ T3606] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 45.828259][ T3606] lock_acquire+0x1df/0x630 [ 45.832838][ T3606] ? do_journal_begin_r+0x293/0x10e0 [ 45.838390][ T3606] ? lock_release+0x810/0x810 [ 45.843078][ T3606] __mutex_lock+0x12f/0x1350 [ 45.847658][ T3606] ? do_journal_begin_r+0x293/0x10e0 [ 45.853027][ T3606] ? do_journal_begin_r+0x293/0x10e0 [ 45.858311][ T3606] ? mutex_lock_io_nested+0x1190/0x1190 [ 45.863852][ T3606] ? wait_for_completion_io_timeout+0x20/0x20 [ 45.869919][ T3606] ? lockdep_unlock+0x11b/0x290 [ 45.874761][ T3606] ? __lock_acquire+0x2567/0x56d0 [ 45.879784][ T3606] do_journal_begin_r+0x293/0x10e0 [ 45.884979][ T3606] ? do_journal_end+0x4af0/0x4af0 [ 45.889997][ T3606] ? find_held_lock+0x2d/0x110 [ 45.894749][ T3606] ? current_time+0x72/0x2c0 [ 45.899337][ T3606] journal_begin+0x162/0x400 [ 45.904033][ T3606] reiserfs_dirty_inode+0xff/0x250 [ 45.909167][ T3606] ? reiserfs_unfreeze+0xa0/0xa0 [ 45.914100][ T3606] ? ktime_get_coarse_real_ts64+0x1b7/0x200 [ 45.920026][ T3606] ? reiserfs_unfreeze+0xa0/0xa0 [ 45.924962][ T3606] __mark_inode_dirty+0x243/0x11d0 [ 45.930073][ T3606] reiserfs_ioctl+0x2c6/0x320 [ 45.934748][ T3606] ? reiserfs_fileattr_set+0x570/0x570 [ 45.940203][ T3606] __x64_sys_ioctl+0x193/0x200 [ 45.944964][ T3606] do_syscall_64+0x35/0xb0 [ 45.949381][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 45.955268][ T3606] RIP: 0033:0x7f84a7594179 [ 45.959670][ T3606] 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 [ 45.979442][ T3606] RSP: 002b:00007ffef98b2608 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 45.987846][ T3606] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f84a7594179 [ 45.995810][ T3606] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005 [ 46.003773][ T3606] RBP: 00007f84a7553970 R08: 0000000000000000 R09: 0000000000000000 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 46.011737][ T3606] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f