./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor432014673 <...> Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts. execve("./syz-executor432014673", ["./syz-executor432014673"], 0x7ffec0724590 /* 10 vars */) = 0 brk(NULL) = 0x5555566cd000 brk(0x5555566cdc40) = 0x5555566cdc40 arch_prctl(ARCH_SET_FS, 0x5555566cd300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor432014673", 4096) = 27 brk(0x5555566eec40) = 0x5555566eec40 brk(0x5555566ef000) = 0x5555566ef000 mprotect(0x7f6945783000, 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: [ 50.191537][ T3638] loop0: detected capacity change from 0 to 8192 [ 50.202539][ T3638] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 50.215764][ T3638] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 50.225248][ T3638] REISERFS (device loop0): using ordered data mode [ 50.231924][ T3638] 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 [ 50.238144][ T3638] 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 [ 50.254787][ T3638] REISERFS (device loop0): checking transaction log (loop0) [ 50.264545][ T3638] REISERFS (device loop0): Using rupasov hash to sort names [ 50.272569][ T3638] REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. [ 50.288815][ T3638] [ 50.291168][ T3638] ====================================================== [ 50.298185][ T3638] WARNING: possible circular locking dependency detected [ 50.305203][ T3638] 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0 Not tainted [ 50.312222][ T3638] ------------------------------------------------------ [ 50.319219][ T3638] syz-executor432/3638 is trying to acquire lock: [ 50.325606][ T3638] ffffc90003e410f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_begin_r+0x340/0x1070 [ 50.335336][ T3638] [ 50.335336][ T3638] but task is already holding lock: [ 50.342674][ T3638] ffff88802746e460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 50.351872][ T3638] [ 50.351872][ T3638] which lock already depends on the new lock. [ 50.351872][ T3638] [ 50.362250][ T3638] [ 50.362250][ T3638] the existing dependency chain (in reverse order) is: [ 50.371246][ T3638] [ 50.371246][ T3638] -> #2 (sb_writers#9){.+.+}-{0:0}: [ 50.378635][ T3638] lock_acquire+0x182/0x3c0 [ 50.383655][ T3638] sb_start_write+0x4d/0x1a0 [ 50.388768][ T3638] mnt_want_write_file+0x5a/0x1f0 [ 50.394308][ T3638] reiserfs_ioctl+0x16e/0x340 [ 50.399497][ T3638] __se_sys_ioctl+0xfb/0x170 [ 50.404598][ T3638] do_syscall_64+0x3d/0xb0 [ 50.409538][ T3638] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.415940][ T3638] [ 50.415940][ T3638] -> #1 (&sbi->lock){+.+.}-{3:3}: [ 50.423138][ T3638] lock_acquire+0x182/0x3c0 [ 50.428152][ T3638] __mutex_lock_common+0x1bd/0x26e0 [ 50.433861][ T3638] mutex_lock_nested+0x17/0x20 [ 50.439226][ T3638] reiserfs_write_lock_nested+0x5b/0xd0 [ 50.445283][ T3638] do_journal_begin_r+0x34b/0x1070 [ 50.450901][ T3638] journal_begin+0x14b/0x350 [ 50.455998][ T3638] reiserfs_fill_super+0x172b/0x24a0 [ 50.461796][ T3638] mount_bdev+0x26c/0x3a0 [ 50.466634][ T3638] legacy_get_tree+0xea/0x180 [ 50.471824][ T3638] vfs_get_tree+0x88/0x270 [ 50.476748][ T3638] do_new_mount+0x289/0xad0 [ 50.481769][ T3638] __se_sys_mount+0x2d3/0x3c0 [ 50.486957][ T3638] do_syscall_64+0x3d/0xb0 [ 50.491882][ T3638] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.498287][ T3638] [ 50.498287][ T3638] -> #0 (&journal->j_mutex){+.+.}-{3:3}: [ 50.506093][ T3638] validate_chain+0x1898/0x6ae0 [ 50.511456][ T3638] __lock_acquire+0x1292/0x1f60 [ 50.516933][ T3638] lock_acquire+0x182/0x3c0 [ 50.521946][ T3638] __mutex_lock_common+0x1bd/0x26e0 [ 50.527655][ T3638] mutex_lock_nested+0x17/0x20 [ 50.532944][ T3638] do_journal_begin_r+0x340/0x1070 [ 50.538588][ T3638] journal_begin+0x14b/0x350 [ 50.543701][ T3638] reiserfs_dirty_inode+0x108/0x230 [ 50.549425][ T3638] __mark_inode_dirty+0x1e7/0x600 [ 50.554958][ T3638] reiserfs_ioctl+0x293/0x340 [ 50.560146][ T3638] __se_sys_ioctl+0xfb/0x170 [ 50.565247][ T3638] do_syscall_64+0x3d/0xb0 [ 50.570170][ T3638] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.576577][ T3638] [ 50.576577][ T3638] other info that might help us debug this: [ 50.576577][ T3638] [ 50.586789][ T3638] Chain exists of: [ 50.586789][ T3638] &journal->j_mutex --> &sbi->lock --> sb_writers#9 [ 50.586789][ T3638] [ 50.599292][ T3638] Possible unsafe locking scenario: [ 50.599292][ T3638] [ 50.606723][ T3638] CPU0 CPU1 [ 50.612070][ T3638] ---- ---- [ 50.617417][ T3638] lock(sb_writers#9); [ 50.621571][ T3638] lock(&sbi->lock); [ 50.628059][ T3638] lock(sb_writers#9); [ 50.634728][ T3638] lock(&journal->j_mutex); [ 50.639306][ T3638] [ 50.639306][ T3638] *** DEADLOCK *** [ 50.639306][ T3638] [ 50.647430][ T3638] 1 lock held by syz-executor432/3638: [ 50.652869][ T3638] #0: ffff88802746e460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 [ 50.662525][ T3638] [ 50.662525][ T3638] stack backtrace: [ 50.668398][ T3638] CPU: 1 PID: 3638 Comm: syz-executor432 Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0 [ 50.678806][ T3638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 50.688848][ T3638] Call Trace: [ 50.692116][ T3638] [ 50.695037][ T3638] dump_stack_lvl+0x1b1/0x28e [ 50.699714][ T3638] ? nf_tcp_handle_invalid+0x62e/0x62e [ 50.705170][ T3638] ? print_circular_bug+0x13e/0x1c0 [ 50.710364][ T3638] check_noncircular+0x2cc/0x390 [ 50.715293][ T3638] ? add_chain_block+0x850/0x850 [ 50.720223][ T3638] ? lockdep_lock+0x102/0x290 [ 50.724913][ T3638] ? _find_first_zero_bit+0xe8/0x110 [ 50.730209][ T3638] validate_chain+0x1898/0x6ae0 [ 50.735068][ T3638] ? reacquire_held_locks+0x650/0x650 [ 50.740434][ T3638] ? __kernel_text_address+0x9/0x40 [ 50.745627][ T3638] ? unwind_get_return_address+0x48/0x80 [ 50.751249][ T3638] ? arch_stack_walk+0x98/0xe0 [ 50.756005][ T3638] ? stack_trace_save+0x104/0x1e0 [ 50.761024][ T3638] ? stack_trace_snprint+0xf0/0xf0 [ 50.766154][ T3638] ? check_noncircular+0x1aa/0x390 [ 50.771262][ T3638] ? add_chain_block+0x850/0x850 [ 50.776192][ T3638] ? lockdep_unlock+0x144/0x2e0 [ 50.781029][ T3638] ? lockdep_lock+0x290/0x290 [ 50.785695][ T3638] ? add_lock_to_list+0x1c7/0x2d0 [ 50.790712][ T3638] ? validate_chain+0x1478/0x6ae0 [ 50.795735][ T3638] ? reacquire_held_locks+0x650/0x650 [ 50.801121][ T3638] ? lockdep_unlock+0x144/0x2e0 [ 50.805967][ T3638] ? lockdep_lock+0x290/0x290 [ 50.810631][ T3638] ? add_lock_to_list+0x1c7/0x2d0 [ 50.815647][ T3638] ? validate_chain+0x1478/0x6ae0 [ 50.820669][ T3638] ? reacquire_held_locks+0x650/0x650 [ 50.826096][ T3638] ? rcu_read_lock_sched_held+0x87/0x110 [ 50.831717][ T3638] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 50.837690][ T3638] ? __stack_depot_save+0x41c/0x4a0 [ 50.842880][ T3638] ? trace_lock_release+0x95/0x220 [ 50.847985][ T3638] ? stack_trace_save+0x1e0/0x1e0 [ 50.853005][ T3638] ? rcu_read_lock_sched_held+0x87/0x110 [ 50.858628][ T3638] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 50.864605][ T3638] ? stack_trace_save+0x1e0/0x1e0 [ 50.869617][ T3638] ? rcu_read_lock_sched_held+0x87/0x110 [ 50.875239][ T3638] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 50.881211][ T3638] ? rcu_lock_release+0x5/0x20 [ 50.885968][ T3638] ? read_lock_is_recursive+0x10/0x10 [ 50.891331][ T3638] ? rcu_lock_release+0x5/0x20 [ 50.896086][ T3638] ? __lock_acquire+0x1f60/0x1f60 [ 50.901101][ T3638] ? deref_stack_reg+0x17a/0x210 [ 50.906031][ T3638] ? preempt_count_add+0x8d/0x180 [ 50.911058][ T3638] ? stack_trace_save+0x1e0/0x1e0 [ 50.916079][ T3638] ? is_bpf_text_address+0x253/0x270 [ 50.921353][ T3638] ? stack_trace_save+0x1e0/0x1e0 [ 50.926369][ T3638] ? stack_trace_save+0x1e0/0x1e0 [ 50.931407][ T3638] ? rcu_read_lock_sched_held+0x87/0x110 [ 50.937029][ T3638] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 50.942997][ T3638] ? rcu_lock_release+0x5/0x20 [ 50.947755][ T3638] ? read_lock_is_recursive+0x10/0x10 [ 50.953114][ T3638] ? rcu_lock_release+0x5/0x20 [ 50.957868][ T3638] ? __lock_acquire+0x1f60/0x1f60 [ 50.962883][ T3638] ? deref_stack_reg+0x17a/0x210 [ 50.967813][ T3638] ? stack_trace_save+0x1e0/0x1e0 [ 50.972825][ T3638] ? rcu_read_lock_sched_held+0x87/0x110 [ 50.978446][ T3638] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 50.984416][ T3638] ? rcu_lock_release+0x5/0x20 [ 50.989172][ T3638] ? read_lock_is_recursive+0x10/0x10 [ 50.994534][ T3638] ? rcu_lock_release+0x5/0x20 [ 50.999285][ T3638] ? __lock_acquire+0x1f60/0x1f60 [ 51.004307][ T3638] ? deref_stack_reg+0x17a/0x210 [ 51.009237][ T3638] ? mark_lock+0x9a/0x350 [ 51.013557][ T3638] ? __lock_acquire+0x1292/0x1f60 [ 51.018573][ T3638] ? mark_lock+0x9a/0x350 [ 51.022890][ T3638] __lock_acquire+0x1292/0x1f60 [ 51.027736][ T3638] lock_acquire+0x182/0x3c0 [ 51.032230][ T3638] ? do_journal_begin_r+0x340/0x1070 [ 51.037507][ T3638] ? read_lock_is_recursive+0x10/0x10 [ 51.042869][ T3638] ? __might_sleep+0xc0/0xc0 [ 51.047449][ T3638] ? reiserfs_write_unlock_nested+0xd0/0x120 [ 51.053420][ T3638] ? __lock_acquire+0x1f60/0x1f60 [ 51.058435][ T3638] __mutex_lock_common+0x1bd/0x26e0 [ 51.063624][ T3638] ? do_journal_begin_r+0x340/0x1070 [ 51.068901][ T3638] ? __mutex_unlock_slowpath+0x222/0x770 [ 51.074524][ T3638] ? do_journal_begin_r+0x340/0x1070 [ 51.079796][ T3638] ? mutex_unlock+0x10/0x10 [ 51.084288][ T3638] ? mutex_lock_io_nested+0x60/0x60 [ 51.089482][ T3638] mutex_lock_nested+0x17/0x20 [ 51.094236][ T3638] do_journal_begin_r+0x340/0x1070 [ 51.099341][ T3638] ? journal_join_abort+0xe0/0xe0 [ 51.104353][ T3638] ? print_irqtrace_events+0x220/0x220 [ 51.109803][ T3638] ? ktime_get_coarse_real_ts64+0x45/0x140 [ 51.115598][ T3638] ? lockdep_hardirqs_on+0x8d/0x130 [ 51.120789][ T3638] journal_begin+0x14b/0x350 [ 51.125379][ T3638] reiserfs_dirty_inode+0x108/0x230 [ 51.130570][ T3638] ? reiserfs_free_inode+0x20/0x20 [ 51.135670][ T3638] ? rcu_read_lock_sched_held+0x87/0x110 [ 51.141294][ T3638] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 51.147266][ T3638] ? current_time+0x1d7/0x300 [ 51.151934][ T3638] ? reiserfs_free_inode+0x20/0x20 [ 51.157036][ T3638] __mark_inode_dirty+0x1e7/0x600 [ 51.162146][ T3638] ? __might_fault+0xb2/0x110 [ 51.166818][ T3638] reiserfs_ioctl+0x293/0x340 [ 51.171485][ T3638] ? __se_sys_ioctl+0xf0/0x170 [ 51.176240][ T3638] ? reiserfs_unpack+0x390/0x390 [ 51.181164][ T3638] __se_sys_ioctl+0xfb/0x170 [ 51.185747][ T3638] do_syscall_64+0x3d/0xb0 [ 51.190156][ T3638] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.196042][ T3638] RIP: 0033:0x7f6945717159 [ 51.200448][ T3638] 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 [ 51.220043][ T3638] RSP: 002b:00007fffd1b3a5a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.228451][ T3638] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6945717159 [ 51.236411][ T3638] RDX: 0000000020000080 RSI: 0000000040087602 RDI: 0000000000000005 ioctl(5, FS_IOC_SETVERSION, 0x20000080) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 51.244369][ T3638]