./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1595595841 <...> DUID 00:04:f8:b5:8a:47:ae:09:95:3a:43:2d:d7:42:86:31:94:89 forked to background, child pid 3209 [ 29.997926][ T3210] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.010604][ T3210] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. execve("./syz-executor1595595841", ["./syz-executor1595595841"], 0x7ffd98f70940 /* 10 vars */) = 0 brk(NULL) = 0x555555c9b000 brk(0x555555c9bc40) = 0x555555c9bc40 arch_prctl(ARCH_SET_FS, 0x555555c9b300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1595595841", 4096) = 28 brk(0x555555cbcc40) = 0x555555cbcc40 brk(0x555555cbd000) = 0x555555cbd000 mprotect(0x7f6c4e293000, 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: [ 53.332274][ T3630] loop0: detected capacity change from 0 to 8192 [ 53.343689][ T3630] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 53.356841][ T3630] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 53.366305][ T3630] REISERFS (device loop0): using ordered data mode [ 53.372952][ T3630] 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 [ 53.379196][ T3630] 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 [ 53.395803][ T3630] REISERFS (device loop0): checking transaction log (loop0) [ 53.405046][ T3630] REISERFS (device loop0): Using rupasov hash to sort names [ 53.413420][ T3630] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 53.431117][ T3630] [ 53.433464][ T3630] ====================================================== [ 53.440476][ T3630] WARNING: possible circular locking dependency detected [ 53.447489][ T3630] 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0 Not tainted [ 53.454501][ T3630] ------------------------------------------------------ [ 53.461492][ T3630] syz-executor159/3630 is trying to acquire lock: [ 53.467898][ T3630] ffffc90003c110f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 53.477623][ T3630] [ 53.477623][ T3630] but task is already holding lock: [ 53.484965][ T3630] ffff8880788e4460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.494171][ T3630] [ 53.494171][ T3630] which lock already depends on the new lock. [ 53.494171][ T3630] [ 53.504548][ T3630] [ 53.504548][ T3630] the existing dependency chain (in reverse order) is: [ 53.513534][ T3630] [ 53.513534][ T3630] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 53.520893][ T3630] lock_acquire+0x182/0x3c0 [ 53.525896][ T3630] sb_start_write+0x4d/0x1a0 [ 53.530986][ T3630] mnt_want_write_file+0x5a/0x1f0 [ 53.536510][ T3630] reiserfs_ioctl+0x16e/0x340 [ 53.541689][ T3630] __se_sys_ioctl+0xfb/0x170 [ 53.546788][ T3630] do_syscall_64+0x3d/0xb0 [ 53.551729][ T3630] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.558136][ T3630] [ 53.558136][ T3630] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 53.565329][ T3630] lock_acquire+0x182/0x3c0 [ 53.570339][ T3630] __mutex_lock_common+0x1bd/0x26e0 [ 53.576047][ T3630] mutex_lock_nested+0x17/0x20 [ 53.581411][ T3630] reiserfs_write_lock_nested+0x5b/0xd0 [ 53.587466][ T3630] do_journal_begin_r+0x34b/0x1070 [ 53.593085][ T3630] journal_begin+0x14b/0x350 [ 53.598181][ T3630] reiserfs_fill_super+0x172b/0x24a0 [ 53.603975][ T3630] mount_bdev+0x26c/0x3a0 [ 53.608810][ T3630] legacy_get_tree+0xea/0x180 [ 53.613995][ T3630] vfs_get_tree+0x88/0x270 [ 53.618923][ T3630] do_new_mount+0x289/0xad0 [ 53.623932][ T3630] __se_sys_mount+0x2d3/0x3c0 [ 53.629113][ T3630] do_syscall_64+0x3d/0xb0 [ 53.634040][ T3630] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.640455][ T3630] [ 53.640455][ T3630] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 53.648256][ T3630] validate_chain+0x1898/0x6ae0 [ 53.653613][ T3630] __lock_acquire+0x1292/0x1f60 [ 53.658969][ T3630] lock_acquire+0x182/0x3c0 [ 53.663980][ T3630] __mutex_lock_common+0x1bd/0x26e0 [ 53.669687][ T3630] mutex_lock_nested+0x17/0x20 [ 53.674961][ T3630] do_journal_begin_r+0x340/0x1070 [ 53.680576][ T3630] journal_begin+0x14b/0x350 [ 53.685670][ T3630] reiserfs_dirty_inode+0x108/0x230 [ 53.691378][ T3630] __mark_inode_dirty+0x1e7/0x600 [ 53.696913][ T3630] reiserfs_ioctl+0x293/0x340 [ 53.702095][ T3630] __se_sys_ioctl+0xfb/0x170 [ 53.707197][ T3630] do_syscall_64+0x3d/0xb0 [ 53.712120][ T3630] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 53.718520][ T3630] [ 53.718520][ T3630] other info that might help us debug this: [ 53.718520][ T3630] [ 53.728737][ T3630] Chain exists of: [ 53.728737][ T3630] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 53.728737][ T3630] [ 53.741239][ T3630] Possible unsafe locking scenario: [ 53.741239][ T3630] [ 53.748668][ T3630] CPU0 CPU1 [ 53.754013][ T3630] ---- ---- [ 53.759361][ T3630] lock(sb_writers#9); [ 53.763508][ T3630] lock(&sbi->lock); [ 53.769993][ T3630] lock(sb_writers#9); [ 53.776656][ T3630] lock(&journal->j_mutex); [ 53.781233][ T3630] [ 53.781233][ T3630] *** DEADLOCK *** [ 53.781233][ T3630] [ 53.789358][ T3630] 1 lock held by syz-executor159/3630: [ 53.794798][ T3630] #0: ffff8880788e4460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 53.804449][ T3630] [ 53.804449][ T3630] stack backtrace: [ 53.810320][ T3630] CPU: 1 PID: 3630 Comm: syz-executor159 Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0 [ 53.820714][ T3630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 53.830753][ T3630] Call Trace: [ 53.834022][ T3630] [ 53.836951][ T3630] dump_stack_lvl+0x1b1/0x28e [ 53.841618][ T3630] ? nf_tcp_handle_invalid+0x62e/0x62e [ 53.847066][ T3630] ? print_circular_bug+0x13e/0x1c0 [ 53.852265][ T3630] check_noncircular+0x2cc/0x390 [ 53.857191][ T3630] ? add_chain_block+0x850/0x850 [ 53.862115][ T3630] ? lockdep_lock+0x102/0x290 [ 53.866781][ T3630] ? _find_first_zero_bit+0xe8/0x110 [ 53.872059][ T3630] validate_chain+0x1898/0x6ae0 [ 53.876917][ T3630] ? reacquire_held_locks+0x650/0x650 [ 53.882279][ T3630] ? __kernel_text_address+0x9/0x40 [ 53.887468][ T3630] ? unwind_get_return_address+0x48/0x80 [ 53.893087][ T3630] ? arch_stack_walk+0x98/0xe0 [ 53.897843][ T3630] ? stack_trace_save+0x104/0x1e0 [ 53.902857][ T3630] ? stack_trace_snprint+0xf0/0xf0 [ 53.907956][ T3630] ? check_noncircular+0x1aa/0x390 [ 53.913055][ T3630] ? add_chain_block+0x850/0x850 [ 53.917982][ T3630] ? lockdep_unlock+0x144/0x2e0 [ 53.922825][ T3630] ? lockdep_lock+0x290/0x290 [ 53.927489][ T3630] ? add_lock_to_list+0x1c7/0x2d0 [ 53.932503][ T3630] ? validate_chain+0x1478/0x6ae0 [ 53.937522][ T3630] ? reacquire_held_locks+0x650/0x650 [ 53.942884][ T3630] ? lockdep_unlock+0x144/0x2e0 [ 53.947724][ T3630] ? lockdep_lock+0x290/0x290 [ 53.952386][ T3630] ? add_lock_to_list+0x1c7/0x2d0 [ 53.957488][ T3630] ? validate_chain+0x1478/0x6ae0 [ 53.962508][ T3630] ? reacquire_held_locks+0x650/0x650 [ 53.967874][ T3630] ? rcu_read_lock_sched_held+0x87/0x110 [ 53.973494][ T3630] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 53.979465][ T3630] ? __stack_depot_save+0x41c/0x4a0 [ 53.984653][ T3630] ? trace_lock_release+0x95/0x220 [ 53.989762][ T3630] ? stack_trace_save+0x1e0/0x1e0 [ 53.994775][ T3630] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.000395][ T3630] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.006368][ T3630] ? stack_trace_save+0x1e0/0x1e0 [ 54.011383][ T3630] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.017008][ T3630] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.022997][ T3630] ? rcu_lock_release+0x5/0x20 [ 54.027759][ T3630] ? read_lock_is_recursive+0x10/0x10 [ 54.033142][ T3630] ? rcu_lock_release+0x5/0x20 [ 54.037895][ T3630] ? __lock_acquire+0x1f60/0x1f60 [ 54.042907][ T3630] ? deref_stack_reg+0x17a/0x210 [ 54.047838][ T3630] ? preempt_count_add+0x8d/0x180 [ 54.052852][ T3630] ? stack_trace_save+0x1e0/0x1e0 [ 54.057865][ T3630] ? is_bpf_text_address+0x253/0x270 [ 54.063135][ T3630] ? stack_trace_save+0x1e0/0x1e0 [ 54.068155][ T3630] ? stack_trace_save+0x1e0/0x1e0 [ 54.073168][ T3630] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.078787][ T3630] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.084756][ T3630] ? rcu_lock_release+0x5/0x20 [ 54.089512][ T3630] ? read_lock_is_recursive+0x10/0x10 [ 54.094874][ T3630] ? rcu_lock_release+0x5/0x20 [ 54.099626][ T3630] ? __lock_acquire+0x1f60/0x1f60 [ 54.104649][ T3630] ? deref_stack_reg+0x17a/0x210 [ 54.109576][ T3630] ? stack_trace_save+0x1e0/0x1e0 [ 54.114588][ T3630] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.120210][ T3630] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.126179][ T3630] ? rcu_lock_release+0x5/0x20 [ 54.130934][ T3630] ? read_lock_is_recursive+0x10/0x10 [ 54.136312][ T3630] ? rcu_lock_release+0x5/0x20 [ 54.141065][ T3630] ? __lock_acquire+0x1f60/0x1f60 [ 54.146077][ T3630] ? deref_stack_reg+0x17a/0x210 [ 54.151002][ T3630] ? mark_lock+0x9a/0x350 [ 54.155325][ T3630] ? __lock_acquire+0x1292/0x1f60 [ 54.160357][ T3630] ? mark_lock+0x9a/0x350 [ 54.164706][ T3630] __lock_acquire+0x1292/0x1f60 [ 54.169569][ T3630] lock_acquire+0x182/0x3c0 [ 54.174068][ T3630] ? do_journal_begin_r+0x340/0x1070 [ 54.179347][ T3630] ? read_lock_is_recursive+0x10/0x10 [ 54.184708][ T3630] ? __might_sleep+0xc0/0xc0 [ 54.189287][ T3630] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 54.195259][ T3630] ? __lock_acquire+0x1f60/0x1f60 [ 54.200273][ T3630] __mutex_lock_common+0x1bd/0x26e0 [ 54.205461][ T3630] ? do_journal_begin_r+0x340/0x1070 [ 54.210735][ T3630] ? __mutex_unlock_slowpath+0x222/0x770 [ 54.216361][ T3630] ? do_journal_begin_r+0x340/0x1070 [ 54.221634][ T3630] ? mutex_unlock+0x10/0x10 [ 54.226130][ T3630] ? mutex_lock_io_nested+0x60/0x60 [ 54.231344][ T3630] mutex_lock_nested+0x17/0x20 [ 54.236113][ T3630] do_journal_begin_r+0x340/0x1070 [ 54.241228][ T3630] ? journal_join_abort+0xe0/0xe0 [ 54.246244][ T3630] ? print_irqtrace_events+0x220/0x220 [ 54.251696][ T3630] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 54.257499][ T3630] ? lockdep_hardirqs_on+0x8d/0x130 [ 54.262690][ T3630] journal_begin+0x14b/0x350 [ 54.267270][ T3630] reiserfs_dirty_inode+0x108/0x230 [ 54.272462][ T3630] ? reiserfs_free_inode+0x20/0x20 [ 54.277568][ T3630] ? rcu_read_lock_sched_held+0x87/0x110 [ 54.283189][ T3630] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 54.289166][ T3630] ? current_time+0x1d7/0x300 [ 54.293853][ T3630] ? reiserfs_free_inode+0x20/0x20 [ 54.298986][ T3630] __mark_inode_dirty+0x1e7/0x600 [ 54.304011][ T3630] ? __might_fault+0xb2/0x110 [ 54.308700][ T3630] reiserfs_ioctl+0x293/0x340 [ 54.313369][ T3630] ? __se_sys_ioctl+0xf0/0x170 [ 54.318127][ T3630] ? reiserfs_unpack+0x390/0x390 [ 54.323083][ T3630] __se_sys_ioctl+0xfb/0x170 [ 54.327669][ T3630] do_syscall_64+0x3d/0xb0 [ 54.332097][ T3630] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.337978][ T3630] RIP: 0033:0x7f6c4e227159 [ 54.342387][ T3630] 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 [ 54.361979][ T3630] RSP: 002b:00007ffc1c2d8b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 54.370729][ T3630] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6c4e227159 [ 54.378706][ T3630] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [