./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1440805471 <...> DUID 00:04:e3:38:52:80:67:3f:e9:c9:a2:47:22:a3:59:23:7d:1e forked to background, child pid 3210 [ 29.562503][ T3211] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.577125][ T3211] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.213' (ECDSA) to the list of known hosts. execve("./syz-executor1440805471", ["./syz-executor1440805471"], 0x7ffda43f32d0 /* 10 vars */) = 0 brk(NULL) = 0x55555616f000 brk(0x55555616fc40) = 0x55555616fc40 arch_prctl(ARCH_SET_FS, 0x55555616f300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1440805471", 4096) = 28 brk(0x555556190c40) = 0x555556190c40 brk(0x555556191000) = 0x555556191000 mprotect(0x7f3b460a5000, 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: [ 52.988388][ T3632] loop0: detected capacity change from 0 to 8192 [ 53.000177][ T3632] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 53.013236][ T3632] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 53.022630][ T3632] REISERFS (device loop0): using ordered data mode [ 53.029382][ T3632] 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) [ 53.035926][ T3632] 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 [ 53.052436][ T3632] REISERFS (device loop0): checking transaction log (loop0) [ 53.061765][ T3632] REISERFS (device loop0): Using rupasov hash to sort names [ 53.069941][ T3632] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 53.085375][ T3632] [ 53.087729][ T3632] ====================================================== [ 53.094743][ T3632] WARNING: possible circular locking dependency detected [ 53.101763][ T3632] 6.1.0-rc5-syzkaller-00144-g84368d882b96 #0 Not tainted [ 53.108777][ T3632] ------------------------------------------------------ [ 53.115770][ T3632] syz-executor144/3632 is trying to acquire lock: [ 53.122158][ T3632] ffffc90003be10f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 53.131882][ T3632] [ 53.131882][ T3632] but task is already holding lock: [ 53.139221][ T3632] ffff8880728ee460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.148416][ T3632] [ 53.148416][ T3632] which lock already depends on the new lock. [ 53.148416][ T3632] [ 53.158798][ T3632] [ 53.158798][ T3632] the existing dependency chain (in reverse order) is: [ 53.167791][ T3632] [ 53.167791][ T3632] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 53.175157][ T3632] lock_acquire+0x182/0x3c0 [ 53.180174][ T3632] sb_start_write+0x4d/0x1a0 [ 53.185273][ T3632] mnt_want_write_file+0x5a/0x1f0 [ 53.190805][ T3632] reiserfs_ioctl+0x16e/0x340 [ 53.195986][ T3632] __se_sys_ioctl+0xfb/0x170 [ 53.201076][ T3632] do_syscall_64+0x3d/0xb0 [ 53.206001][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.212398][ T3632] [ 53.212398][ T3632] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 53.219581][ T3632] lock_acquire+0x182/0x3c0 [ 53.224584][ T3632] __mutex_lock_common+0x1bd/0x26e0 [ 53.230283][ T3632] mutex_lock_nested+0x17/0x20 [ 53.235548][ T3632] reiserfs_write_lock_nested+0x5b/0xd0 [ 53.241598][ T3632] do_journal_begin_r+0x34b/0x1070 [ 53.247208][ T3632] journal_begin+0x14b/0x350 [ 53.252297][ T3632] reiserfs_fill_super+0x172b/0x24a0 [ 53.258082][ T3632] mount_bdev+0x26c/0x3a0 [ 53.262911][ T3632] legacy_get_tree+0xea/0x180 [ 53.268087][ T3632] vfs_get_tree+0x88/0x270 [ 53.273002][ T3632] do_new_mount+0x289/0xad0 [ 53.278006][ T3632] __se_sys_mount+0x2d3/0x3c0 [ 53.283184][ T3632] do_syscall_64+0x3d/0xb0 [ 53.288100][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.294502][ T3632] [ 53.294502][ T3632] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 53.302292][ T3632] validate_chain+0x1898/0x6ae0 [ 53.307647][ T3632] __lock_acquire+0x1292/0x1f60 [ 53.313000][ T3632] lock_acquire+0x182/0x3c0 [ 53.318002][ T3632] __mutex_lock_common+0x1bd/0x26e0 [ 53.323705][ T3632] mutex_lock_nested+0x17/0x20 [ 53.328969][ T3632] do_journal_begin_r+0x340/0x1070 [ 53.334583][ T3632] journal_begin+0x14b/0x350 [ 53.339673][ T3632] reiserfs_dirty_inode+0x108/0x230 [ 53.345376][ T3632] __mark_inode_dirty+0x1e7/0x600 [ 53.350902][ T3632] reiserfs_ioctl+0x293/0x340 [ 53.356080][ T3632] __se_sys_ioctl+0xfb/0x170 [ 53.361171][ T3632] do_syscall_64+0x3d/0xb0 [ 53.366087][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.372480][ T3632] [ 53.372480][ T3632] other info that might help us debug this: [ 53.372480][ T3632] [ 53.382685][ T3632] Chain exists of: [ 53.382685][ T3632] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 53.382685][ T3632] [ 53.395178][ T3632] Possible unsafe locking scenario: [ 53.395178][ T3632] [ 53.402609][ T3632] CPU0 CPU1 [ 53.407960][ T3632] ---- ---- [ 53.413310][ T3632] lock(sb_writers#9); [ 53.417453][ T3632] lock(&sbi->lock); [ 53.423934][ T3632] lock(sb_writers#9); [ 53.430593][ T3632] lock(&journal->j_mutex); [ 53.435166][ T3632] [ 53.435166][ T3632] *** DEADLOCK *** [ 53.435166][ T3632] [ 53.443296][ T3632] 1 lock held by syz-executor144/3632: [ 53.448729][ T3632] #0: ffff8880728ee460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.458363][ T3632] [ 53.458363][ T3632] stack backtrace: [ 53.464228][ T3632] CPU: 1 PID: 3632 Comm: syz-executor144 Not tainted 6.1.0-rc5-syzkaller-00144-g84368d882b96 #0 [ 53.474634][ T3632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 53.484664][ T3632] Call Trace: [ 53.487921][ T3632] [ 53.490837][ T3632] dump_stack_lvl+0x1b1/0x28e [ 53.495495][ T3632] ? nf_tcp_handle_invalid+0x62e/0x62e [ 53.500935][ T3632] ? print_circular_bug+0x13e/0x1c0 [ 53.506113][ T3632] check_noncircular+0x2cc/0x390 [ 53.511032][ T3632] ? add_chain_block+0x850/0x850 [ 53.515947][ T3632] ? lockdep_lock+0x102/0x290 [ 53.520603][ T3632] ? _find_first_zero_bit+0xe8/0x110 [ 53.525872][ T3632] validate_chain+0x1898/0x6ae0 [ 53.530713][ T3632] ? reacquire_held_locks+0x650/0x650 [ 53.536069][ T3632] ? __kernel_text_address+0x9/0x40 [ 53.541252][ T3632] ? unwind_get_return_address+0x48/0x80 [ 53.546865][ T3632] ? arch_stack_walk+0x98/0xe0 [ 53.551613][ T3632] ? stack_trace_save+0x104/0x1e0 [ 53.556622][ T3632] ? stack_trace_snprint+0xf0/0xf0 [ 53.561717][ T3632] ? check_noncircular+0x1aa/0x390 [ 53.566814][ T3632] ? add_chain_block+0x850/0x850 [ 53.571741][ T3632] ? lockdep_unlock+0x144/0x2e0 [ 53.576573][ T3632] ? lockdep_lock+0x290/0x290 [ 53.581237][ T3632] ? add_lock_to_list+0x1c7/0x2d0 [ 53.586249][ T3632] ? validate_chain+0x1478/0x6ae0 [ 53.591265][ T3632] ? reacquire_held_locks+0x650/0x650 [ 53.596626][ T3632] ? lockdep_unlock+0x144/0x2e0 [ 53.601459][ T3632] ? lockdep_lock+0x290/0x290 [ 53.606115][ T3632] ? add_lock_to_list+0x1c7/0x2d0 [ 53.611125][ T3632] ? validate_chain+0x1478/0x6ae0 [ 53.616135][ T3632] ? reacquire_held_locks+0x650/0x650 [ 53.621489][ T3632] ? reacquire_held_locks+0x650/0x650 [ 53.626842][ T3632] ? is_bpf_text_address+0x253/0x270 [ 53.632106][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 53.637114][ T3632] ? __kernel_text_address+0x9/0x40 [ 53.642296][ T3632] ? unwind_get_return_address+0x48/0x80 [ 53.647908][ T3632] ? arch_stack_walk+0x98/0xe0 [ 53.652652][ T3632] ? stack_trace_save+0x104/0x1e0 [ 53.657661][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.663274][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.669239][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 53.674269][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.679885][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.685851][ T3632] ? rcu_lock_release+0x5/0x20 [ 53.690606][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 53.695962][ T3632] ? rcu_lock_release+0x5/0x20 [ 53.700709][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 53.705713][ T3632] ? deref_stack_reg+0x17a/0x210 [ 53.710629][ T3632] ? preempt_count_add+0x8d/0x180 [ 53.715639][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 53.720644][ T3632] ? is_bpf_text_address+0x253/0x270 [ 53.725907][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 53.730913][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 53.735917][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.741530][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.747490][ T3632] ? rcu_lock_release+0x5/0x20 [ 53.752239][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 53.757596][ T3632] ? rcu_lock_release+0x5/0x20 [ 53.762343][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 53.767354][ T3632] ? deref_stack_reg+0x17a/0x210 [ 53.772276][ T3632] ? stack_trace_save+0x1e0/0x1e0 [ 53.777285][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.782900][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.788864][ T3632] ? rcu_lock_release+0x5/0x20 [ 53.793614][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 53.798971][ T3632] ? rcu_lock_release+0x5/0x20 [ 53.803722][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 53.808729][ T3632] ? deref_stack_reg+0x17a/0x210 [ 53.813650][ T3632] ? mark_lock+0x9a/0x350 [ 53.817963][ T3632] ? __lock_acquire+0x1292/0x1f60 [ 53.822969][ T3632] ? mark_lock+0x9a/0x350 [ 53.827296][ T3632] __lock_acquire+0x1292/0x1f60 [ 53.832138][ T3632] lock_acquire+0x182/0x3c0 [ 53.836626][ T3632] ? do_journal_begin_r+0x340/0x1070 [ 53.841900][ T3632] ? read_lock_is_recursive+0x10/0x10 [ 53.847259][ T3632] ? __might_sleep+0xc0/0xc0 [ 53.851831][ T3632] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 53.857792][ T3632] ? __lock_acquire+0x1f60/0x1f60 [ 53.862810][ T3632] __mutex_lock_common+0x1bd/0x26e0 [ 53.868004][ T3632] ? do_journal_begin_r+0x340/0x1070 [ 53.873286][ T3632] ? __mutex_unlock_slowpath+0x222/0x770 [ 53.878907][ T3632] ? do_journal_begin_r+0x340/0x1070 [ 53.884170][ T3632] ? mutex_unlock+0x10/0x10 [ 53.888657][ T3632] ? mutex_lock_io_nested+0x60/0x60 [ 53.893841][ T3632] mutex_lock_nested+0x17/0x20 [ 53.898588][ T3632] do_journal_begin_r+0x340/0x1070 [ 53.903685][ T3632] ? journal_join_abort+0xe0/0xe0 [ 53.908689][ T3632] ? print_irqtrace_events+0x220/0x220 [ 53.914128][ T3632] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 53.919916][ T3632] ? lockdep_hardirqs_on+0x8d/0x130 [ 53.925098][ T3632] journal_begin+0x14b/0x350 [ 53.929681][ T3632] reiserfs_dirty_inode+0x108/0x230 [ 53.934872][ T3632] ? reiserfs_free_inode+0x20/0x20 [ 53.939976][ T3632] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.945604][ T3632] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.951577][ T3632] ? current_time+0x1d7/0x300 [ 53.956243][ T3632] ? reiserfs_free_inode+0x20/0x20 [ 53.961346][ T3632] __mark_inode_dirty+0x1e7/0x600 [ 53.966359][ T3632] ? __might_fault+0xb2/0x110 [ 53.971017][ T3632] reiserfs_ioctl+0x293/0x340 [ 53.975675][ T3632] ? __se_sys_ioctl+0xf0/0x170 [ 53.980428][ T3632] ? reiserfs_unpack+0x390/0x390 [ 53.985354][ T3632] __se_sys_ioctl+0xfb/0x170 [ 53.989938][ T3632] do_syscall_64+0x3d/0xb0 [ 53.994344][ T3632] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.000224][ T3632] RIP: 0033:0x7f3b46039149 [ 54.004620][ T3632] 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 [ 54.024207][ T3632] RSP: 002b:00007ffc221383a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.032599][ T3632] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b46039149 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 54.040552][ T3632] RDX: 000