./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1776225913 <...> DUID 00:04:f8:32:f0:25:6b:f7:7b:d6:d2:5e:34:7f:1d:07:e3:4e forked to background, child pid 3211 [ 29.391203][ T3212] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.400358][ T3212] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. execve("./syz-executor1776225913", ["./syz-executor1776225913"], 0x7ffc9c1acc20 /* 10 vars */) = 0 brk(NULL) = 0x555556c5c000 brk(0x555556c5cc40) = 0x555556c5cc40 arch_prctl(ARCH_SET_FS, 0x555556c5c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1776225913", 4096) = 28 brk(0x555556c7dc40) = 0x555556c7dc40 brk(0x555556c7e000) = 0x555556c7e000 mprotect(0x7fdddc65c000, 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: [ 52.994356][ T3639] loop0: detected capacity change from 0 to 8192 [ 53.005044][ T3639] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 53.018289][ T3639] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 53.027503][ T3639] REISERFS (device loop0): using ordered data mode [ 53.034564][ T3639] 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(".", O_RDONLY) = 3 fsconfig(-1, FSCONFIG_SET_PATH_EMPTY, NULL, NULL, -1) = -1 EINVAL (Invalid argument) [ 53.040782][ T3639] 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 [ 53.057356][ T3639] REISERFS (device loop0): checking transaction log (loop0) [ 53.067168][ T3639] REISERFS (device loop0): Using rupasov hash to sort names [ 53.075220][ T3639] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 53.093627][ T3639] [ 53.095977][ T3639] ====================================================== [ 53.102989][ T3639] WARNING: possible circular locking dependency detected [ 53.110002][ T3639] 6.1.0-rc5-syzkaller-00018-g59d0d52c30d4 #0 Not tainted [ 53.117013][ T3639] ------------------------------------------------------ [ 53.124008][ T3639] syz-executor177/3639 is trying to acquire lock: [ 53.130397][ T3639] ffffc90003cc10f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 53.140126][ T3639] [ 53.140126][ T3639] but task is already holding lock: [ 53.147472][ T3639] ffff8880273e8460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.156669][ T3639] [ 53.156669][ T3639] which lock already depends on the new lock. [ 53.156669][ T3639] [ 53.167049][ T3639] [ 53.167049][ T3639] the existing dependency chain (in reverse order) is: [ 53.176040][ T3639] [ 53.176040][ T3639] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 53.183398][ T3639] lock_acquire+0x182/0x3c0 [ 53.188404][ T3639] sb_start_write+0x4d/0x1a0 [ 53.193500][ T3639] mnt_want_write_file+0x5a/0x1f0 [ 53.199031][ T3639] reiserfs_ioctl+0x16e/0x340 [ 53.204207][ T3639] __se_sys_ioctl+0xfb/0x170 [ 53.209298][ T3639] do_syscall_64+0x3d/0xb0 [ 53.214222][ T3639] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.220615][ T3639] [ 53.220615][ T3639] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 53.227797][ T3639] lock_acquire+0x182/0x3c0 [ 53.232805][ T3639] __mutex_lock_common+0x1bd/0x26e0 [ 53.238534][ T3639] mutex_lock_nested+0x17/0x20 [ 53.243798][ T3639] reiserfs_write_lock_nested+0x5b/0xd0 [ 53.249844][ T3639] do_journal_begin_r+0x34b/0x1070 [ 53.255453][ T3639] journal_begin+0x14b/0x350 [ 53.260562][ T3639] reiserfs_fill_super+0x172b/0x24a0 [ 53.266348][ T3639] mount_bdev+0x26c/0x3a0 [ 53.271189][ T3639] legacy_get_tree+0xea/0x180 [ 53.276372][ T3639] vfs_get_tree+0x88/0x270 [ 53.281287][ T3639] do_new_mount+0x289/0xad0 [ 53.286293][ T3639] __se_sys_mount+0x2d3/0x3c0 [ 53.291470][ T3639] do_syscall_64+0x3d/0xb0 [ 53.296386][ T3639] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.303213][ T3639] [ 53.303213][ T3639] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 53.311001][ T3639] validate_chain+0x1898/0x6ae0 [ 53.316353][ T3639] __lock_acquire+0x1292/0x1f60 [ 53.321707][ T3639] lock_acquire+0x182/0x3c0 [ 53.326711][ T3639] __mutex_lock_common+0x1bd/0x26e0 [ 53.332410][ T3639] mutex_lock_nested+0x17/0x20 [ 53.337673][ T3639] do_journal_begin_r+0x340/0x1070 [ 53.343281][ T3639] journal_begin+0x14b/0x350 [ 53.348381][ T3639] reiserfs_dirty_inode+0x108/0x230 [ 53.354080][ T3639] __mark_inode_dirty+0x1e7/0x600 [ 53.359604][ T3639] reiserfs_ioctl+0x293/0x340 [ 53.364778][ T3639] __se_sys_ioctl+0xfb/0x170 [ 53.369872][ T3639] do_syscall_64+0x3d/0xb0 [ 53.374795][ T3639] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.381199][ T3639] [ 53.381199][ T3639] other info that might help us debug this: [ 53.381199][ T3639] [ 53.391406][ T3639] Chain exists of: [ 53.391406][ T3639] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 53.391406][ T3639] [ 53.403896][ T3639] Possible unsafe locking scenario: [ 53.403896][ T3639] [ 53.411327][ T3639] CPU0 CPU1 [ 53.416678][ T3639] ---- ---- [ 53.422025][ T3639] lock(sb_writers#9); [ 53.426165][ T3639] lock(&sbi->lock); [ 53.432647][ T3639] lock(sb_writers#9); [ 53.439475][ T3639] lock(&journal->j_mutex); [ 53.444049][ T3639] [ 53.444049][ T3639] *** DEADLOCK *** [ 53.444049][ T3639] [ 53.452170][ T3639] 1 lock held by syz-executor177/3639: [ 53.457603][ T3639] #0: ffff8880273e8460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.467242][ T3639] [ 53.467242][ T3639] stack backtrace: [ 53.473104][ T3639] CPU: 1 PID: 3639 Comm: syz-executor177 Not tainted 6.1.0-rc5-syzkaller-00018-g59d0d52c30d4 #0 [ 53.483487][ T3639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 53.493524][ T3639] Call Trace: [ 53.496784][ T3639] [ 53.499702][ T3639] dump_stack_lvl+0x1b1/0x28e [ 53.504378][ T3639] ? nf_tcp_handle_invalid+0x62e/0x62e [ 53.509818][ T3639] ? print_circular_bug+0x13e/0x1c0 [ 53.514999][ T3639] check_noncircular+0x2cc/0x390 [ 53.519925][ T3639] ? add_chain_block+0x850/0x850 [ 53.524848][ T3639] ? lockdep_lock+0x102/0x290 [ 53.529508][ T3639] ? _find_first_zero_bit+0xe8/0x110 [ 53.534774][ T3639] validate_chain+0x1898/0x6ae0 [ 53.539610][ T3639] ? reacquire_held_locks+0x650/0x650 [ 53.544968][ T3639] ? __kernel_text_address+0x9/0x40 [ 53.550153][ T3639] ? unwind_get_return_address+0x48/0x80 [ 53.555772][ T3639] ? arch_stack_walk+0x98/0xe0 [ 53.560525][ T3639] ? stack_trace_save+0x104/0x1e0 [ 53.565533][ T3639] ? stack_trace_snprint+0xf0/0xf0 [ 53.570628][ T3639] ? check_noncircular+0x1aa/0x390 [ 53.575723][ T3639] ? add_chain_block+0x850/0x850 [ 53.580643][ T3639] ? lockdep_unlock+0x144/0x2e0 [ 53.585480][ T3639] ? lockdep_lock+0x290/0x290 [ 53.590137][ T3639] ? add_lock_to_list+0x1c7/0x2d0 [ 53.595145][ T3639] ? validate_chain+0x1478/0x6ae0 [ 53.600154][ T3639] ? reacquire_held_locks+0x650/0x650 [ 53.605506][ T3639] ? lockdep_unlock+0x144/0x2e0 [ 53.610337][ T3639] ? lockdep_lock+0x290/0x290 [ 53.614994][ T3639] ? add_lock_to_list+0x1c7/0x2d0 [ 53.620000][ T3639] ? validate_chain+0x1478/0x6ae0 [ 53.625009][ T3639] ? reacquire_held_locks+0x650/0x650 [ 53.630370][ T3639] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.635986][ T3639] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.641946][ T3639] ? __stack_depot_save+0x41c/0x4a0 [ 53.647128][ T3639] ? trace_lock_release+0x95/0x220 [ 53.652309][ T3639] ? stack_trace_save+0x1e0/0x1e0 [ 53.657313][ T3639] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.662924][ T3639] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.668888][ T3639] ? stack_trace_save+0x1e0/0x1e0 [ 53.673891][ T3639] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.679501][ T3639] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.685467][ T3639] ? rcu_lock_release+0x5/0x20 [ 53.690213][ T3639] ? read_lock_is_recursive+0x10/0x10 [ 53.695568][ T3639] ? rcu_lock_release+0x5/0x20 [ 53.700312][ T3639] ? __lock_acquire+0x1f60/0x1f60 [ 53.705313][ T3639] ? deref_stack_reg+0x17a/0x210 [ 53.710231][ T3639] ? preempt_count_add+0x8d/0x180 [ 53.715253][ T3639] ? stack_trace_save+0x1e0/0x1e0 [ 53.720257][ T3639] ? is_bpf_text_address+0x253/0x270 [ 53.725523][ T3639] ? stack_trace_save+0x1e0/0x1e0 [ 53.730530][ T3639] ? stack_trace_save+0x1e0/0x1e0 [ 53.735533][ T3639] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.741143][ T3639] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.747102][ T3639] ? rcu_lock_release+0x5/0x20 [ 53.751848][ T3639] ? read_lock_is_recursive+0x10/0x10 [ 53.757196][ T3639] ? rcu_lock_release+0x5/0x20 [ 53.761943][ T3639] ? __lock_acquire+0x1f60/0x1f60 [ 53.766945][ T3639] ? deref_stack_reg+0x17a/0x210 [ 53.771863][ T3639] ? stack_trace_save+0x1e0/0x1e0 [ 53.776864][ T3639] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.782481][ T3639] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.788441][ T3639] ? rcu_lock_release+0x5/0x20 [ 53.793188][ T3639] ? read_lock_is_recursive+0x10/0x10 [ 53.798538][ T3639] ? rcu_lock_release+0x5/0x20 [ 53.803282][ T3639] ? __lock_acquire+0x1f60/0x1f60 [ 53.808284][ T3639] ? deref_stack_reg+0x17a/0x210 [ 53.813201][ T3639] ? mark_lock+0x9a/0x350 [ 53.817513][ T3639] ? __lock_acquire+0x1292/0x1f60 [ 53.822517][ T3639] ? mark_lock+0x9a/0x350 [ 53.826825][ T3639] __lock_acquire+0x1292/0x1f60 [ 53.831658][ T3639] lock_acquire+0x182/0x3c0 [ 53.836140][ T3639] ? do_journal_begin_r+0x340/0x1070 [ 53.841404][ T3639] ? read_lock_is_recursive+0x10/0x10 [ 53.846761][ T3639] ? __might_sleep+0xc0/0xc0 [ 53.851331][ T3639] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 53.857296][ T3639] ? __lock_acquire+0x1f60/0x1f60 [ 53.862301][ T3639] __mutex_lock_common+0x1bd/0x26e0 [ 53.867483][ T3639] ? do_journal_begin_r+0x340/0x1070 [ 53.872745][ T3639] ? __mutex_unlock_slowpath+0x222/0x770 [ 53.878365][ T3639] ? do_journal_begin_r+0x340/0x1070 [ 53.883628][ T3639] ? mutex_unlock+0x10/0x10 [ 53.888114][ T3639] ? mutex_lock_io_nested+0x60/0x60 [ 53.893296][ T3639] mutex_lock_nested+0x17/0x20 [ 53.898043][ T3639] do_journal_begin_r+0x340/0x1070 [ 53.903137][ T3639] ? journal_join_abort+0xe0/0xe0 [ 53.908142][ T3639] ? print_irqtrace_events+0x220/0x220 [ 53.913580][ T3639] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 53.919374][ T3639] ? lockdep_hardirqs_on+0x8d/0x130 [ 53.924555][ T3639] journal_begin+0x14b/0x350 [ 53.929131][ T3639] reiserfs_dirty_inode+0x108/0x230 [ 53.934311][ T3639] ? reiserfs_free_inode+0x20/0x20 [ 53.939409][ T3639] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.945022][ T3639] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.950986][ T3639] ? current_time+0x1d7/0x300 [ 53.955644][ T3639] ? reiserfs_free_inode+0x20/0x20 [ 53.960736][ T3639] __mark_inode_dirty+0x1e7/0x600 [ 53.965741][ T3639] ? __might_fault+0xb2/0x110 [ 53.970395][ T3639] reiserfs_ioctl+0x293/0x340 [ 53.975051][ T3639] ? __se_sys_ioctl+0xf0/0x170 [ 53.979798][ T3639] ? reiserfs_unpack+0x390/0x390 [ 53.984717][ T3639] __se_sys_ioctl+0xfb/0x170 [ 53.989290][ T3639] do_syscall_64+0x3d/0xb0 [ 53.993691][ T3639] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.999562][ T3639] RIP: 0033:0x7fdddc5f0179 [ 54.003958][ T3639] 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 [ 54.023542][ T3639] RSP: 002b:00007ffea2e9c2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.031933][ T3639] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdddc5f0179 [ 54.039882][ T3639] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 54.047832][