./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor955777202

<...>
Warning: Permanently added '10.128.0.207' (ED25519) to the list of known hosts.
execve("./syz-executor955777202", ["./syz-executor955777202"], 0x7ffd39d1f3a0 /* 10 vars */) = 0
brk(NULL)                               = 0x55558a42f000
brk(0x55558a42fd00)                     = 0x55558a42fd00
arch_prctl(ARCH_SET_FS, 0x55558a42f380) = 0
set_tid_address(0x55558a42f650)         = 5814
set_robust_list(0x55558a42f660, 24)     = 0
rseq(0x55558a42fca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor955777202", 4096) = 27
getrandom("\x09\xbc\xc1\x2a\x7d\xef\x27\xee", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558a42fd00
brk(0x55558a450d00)                     = 0x55558a450d00
brk(0x55558a451000)                     = 0x55558a451000
mprotect(0x7f6fd6c76000, 16384, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5815 attached
 <unfinished ...>
[pid  5815] set_robust_list(0x55558a42f660, 24 <unfinished ...>
[pid  5814] <... clone resumed>, child_tidptr=0x55558a42f650) = 5815
[pid  5815] <... set_robust_list resumed>) = 0
[pid  5815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5815] getppid()                   = 0
[pid  5815] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5815] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5815] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5815] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5815] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5815] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5815] unshare(CLONE_NEWNS)        = 0
[pid  5815] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5815] unshare(CLONE_NEWIPC)       = 0
[pid  5815] unshare(CLONE_NEWCGROUP)    = 0
[pid  5815] unshare(CLONE_NEWUTS)       = 0
[pid  5815] unshare(CLONE_SYSVSEM)      = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "16777216", 8)     = 8
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "536870912", 9)    = 9
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "1024", 4)         = 4
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "8192", 4)         = 4
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "1024", 4)         = 4
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "1024", 4)         = 4
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5815] close(3)                    = 0
[pid  5815] getpid()                    = 1
[pid  5815] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5815] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5815] unshare(CLONE_NEWNET)       = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "0 65535", 7)      = 7
[pid  5815] close(3)                    = 0
[pid  5815] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid  5815] write(3, "100000", 6)       = 6
[pid  5815] close(3)                    = 0
[pid  5815] mkdir("./syz-tmp", 0777)    = 0
[pid  5815] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid  5815] mkdir("./syz-tmp/newroot", 0777) = 0
[pid  5815] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid  5815] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5815] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid  5815] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid  5815] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid  5815] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5815] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5815] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid  5815] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5815] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5815] mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5815] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5815] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid  5815] mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, MS_RDONLY|MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5815] mkdir("./syz-tmp/pivot", 0777) = 0
[pid  5815] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid  5815] chdir("/")                  = 0
[pid  5815] umount2("./pivot", MNT_DETACH) = 0
[pid  5815] chroot("./newroot")         = 0
[pid  5815] chdir("/")                  = 0
[pid  5815] mkdir("/dev/gadgetfs", 0777) = 0
[pid  5815] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = 0
[pid  5815] mkdir("/dev/binderfs", 0777) = 0
[pid  5815] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5815] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5815] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid  5815] write(1, "executing program\n", 18executing program
) = 18
[pid  5815] memfd_create("syzkaller", 0) = 3
[pid  5815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6fce600000
[pid  5815] write(3, "\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\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\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576
[pid  5815] munmap(0x7f6fce600000, 138412032) = 0
[pid  5815] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5815] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5815] close(3)                    = 0
[pid  5815] close(4)                    = 0
[pid  5815] mkdir("./bus", 0777)        = 0
[   70.184032][ T5815] loop0: detected capacity change from 0 to 2048
[pid  5815] mount("/dev/loop0", "./bus", "nilfs2", 0, "") = 0
[pid  5815] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3
[pid  5815] chdir("./bus")              = 0
[pid  5815] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy)
[pid  5815] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC|O_DIRECT, 000) = 4
[   70.253826][ T5818] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
[pid  5815] mmap(0x200000001000, 4096, PROT_WRITE, MAP_SHARED|MAP_FIXED, 4, 0) = 0x200000001000
[pid  5815] open(".", O_RDONLY)         = 5
[pid  5815] getdents(5, 0x200000001fc0 /* 0+ entries */, 184) = 176
[pid  5815] exit_group(1)               = ?
[   70.302503][   T30] audit: type=1800 audit(1746397827.805:2): pid=5815 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="syz-executor955" name="file1" dev="loop0" ino=15 res=0 errno=0
[   70.363166][ T5818] NILFS (loop0): vblocknr = 23 has abnormal lifetime: start cno (= 4294967298) > current cno (= 3)
[   70.374059][ T5818] NILFS error (device loop0): nilfs_bmap_propagate: broken bmap (inode number=4)
[   70.383637][ T5818] 
[   70.385971][ T5818] ======================================================
[   70.392977][ T5818] WARNING: possible circular locking dependency detected
[   70.399975][ T5818] 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 Not tainted
[   70.407057][ T5818] ------------------------------------------------------
[   70.414047][ T5818] segctord/5818 is trying to acquire lock:
[   70.419824][ T5818] ffff8880347f0090 (&nilfs->ns_sem){++++}-{4:4}, at: __nilfs_error+0x1ca/0x4b0
[   70.428778][ T5818] 
[   70.428778][ T5818] but task is already holding lock:
[   70.436117][ T5818] ffff8880347f02a0 (&nilfs->ns_segctor_sem){++++}-{4:4}, at: nilfs_transaction_lock+0x253/0x4c0
[   70.446536][ T5818] 
[   70.446536][ T5818] which lock already depends on the new lock.
[   70.446536][ T5818] 
[   70.456912][ T5818] 
[   70.456912][ T5818] the existing dependency chain (in reverse order) is:
[   70.465902][ T5818] 
[   70.465902][ T5818] -> #5 (&nilfs->ns_segctor_sem){++++}-{4:4}:
[   70.474127][ T5818]        lock_acquire+0x120/0x360
[   70.479135][ T5818]        down_read+0x46/0x2e0
[   70.483795][ T5818]        nilfs_transaction_begin+0x365/0x710
[   70.489749][ T5818]        nilfs_page_mkwrite+0x8b0/0xc20
[   70.495271][ T5818]        do_page_mkwrite+0x14a/0x310
[   70.500527][ T5818]        __handle_mm_fault+0x18d2/0x5380
[   70.506138][ T5818]        handle_mm_fault+0x2d5/0x7f0
[   70.511398][ T5818]        do_user_addr_fault+0x764/0x1390
[   70.517007][ T5818]        exc_page_fault+0x68/0x110
[   70.522092][ T5818]        asm_exc_page_fault+0x26/0x30
[   70.527437][ T5818]        filldir+0x299/0x690
[   70.532002][ T5818]        nilfs_readdir+0x2b9/0x6c0
[   70.537089][ T5818]        iterate_dir+0x5ac/0x770
[   70.541998][ T5818]        __se_sys_getdents+0xe4/0x250
[   70.547344][ T5818]        do_syscall_64+0xf6/0x210
[   70.552342][ T5818]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.558735][ T5818] 
[   70.558735][ T5818] -> #4 (sb_internal#2){.+.+}-{0:0}:
[   70.566182][ T5818]        lock_acquire+0x120/0x360
[   70.571181][ T5818]        nilfs_transaction_begin+0x268/0x710
[   70.577138][ T5818]        nilfs_page_mkwrite+0x8b0/0xc20
[   70.582662][ T5818]        do_page_mkwrite+0x14a/0x310
[   70.587920][ T5818]        __handle_mm_fault+0x18d2/0x5380
[   70.593529][ T5818]        handle_mm_fault+0x2d5/0x7f0
[   70.598788][ T5818]        do_user_addr_fault+0x764/0x1390
[   70.604399][ T5818]        exc_page_fault+0x68/0x110
[   70.609482][ T5818]        asm_exc_page_fault+0x26/0x30
[   70.614825][ T5818]        filldir+0x299/0x690
[   70.619392][ T5818]        nilfs_readdir+0x2b9/0x6c0
[   70.624479][ T5818]        iterate_dir+0x5ac/0x770
[   70.629395][ T5818]        __se_sys_getdents+0xe4/0x250
[   70.634744][ T5818]        do_syscall_64+0xf6/0x210
[   70.639742][ T5818]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.646128][ T5818] 
[   70.646128][ T5818] -> #3 (sb_pagefaults){.+.+}-{0:0}:
[   70.653569][ T5818]        lock_acquire+0x120/0x360
[   70.658568][ T5818]        nilfs_page_mkwrite+0x21e/0xc20
[   70.664089][ T5818]        do_page_mkwrite+0x14a/0x310
[   70.669347][ T5818]        __handle_mm_fault+0x18d2/0x5380
[   70.674959][ T5818]        handle_mm_fault+0x2d5/0x7f0
[   70.680217][ T5818]        do_user_addr_fault+0x764/0x1390
[   70.685833][ T5818]        exc_page_fault+0x68/0x110
[   70.690915][ T5818]        asm_exc_page_fault+0x26/0x30
[   70.696257][ T5818]        filldir+0x299/0x690
[   70.700822][ T5818]        nilfs_readdir+0x2b9/0x6c0
[   70.705907][ T5818]        iterate_dir+0x5ac/0x770
[   70.710818][ T5818]        __se_sys_getdents+0xe4/0x250
[   70.716163][ T5818]        do_syscall_64+0xf6/0x210
[   70.721160][ T5818]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.727544][ T5818] 
[   70.727544][ T5818] -> #2 (&mm->mmap_lock){++++}-{4:4}:
[   70.735072][ T5818]        lock_acquire+0x120/0x360
[   70.740071][ T5818]        __might_fault+0xcc/0x130
[   70.745074][ T5818]        _copy_to_iter+0xf3/0x15a0
[   70.750163][ T5818]        copy_page_to_iter+0xa7/0x150
[   70.755512][ T5818]        filemap_read+0x78d/0x11d0
[   70.760598][ T5818]        blkdev_read_iter+0x30a/0x440
[   70.765943][ T5818]        vfs_read+0x4cd/0x980
[   70.770597][ T5818]        ksys_read+0x145/0x250
[   70.775334][ T5818]        do_syscall_64+0xf6/0x210
[   70.780332][ T5818]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.786723][ T5818] 
[   70.786723][ T5818] -> #1 (&sb->s_type->i_mutex_key#7){++++}-{4:4}:
[   70.795298][ T5818]        lock_acquire+0x120/0x360
[   70.800297][ T5818]        down_write+0x96/0x1f0
[   70.805038][ T5818]        set_blocksize+0x23b/0x500
[   70.810120][ T5818]        sb_min_blocksize+0x119/0x210
[   70.815464][ T5818]        init_nilfs+0x43/0x690
[   70.820198][ T5818]        nilfs_fill_super+0x8f/0x650
[   70.825465][ T5818]        nilfs_get_tree+0x4f4/0x870
[   70.830639][ T5818]        vfs_get_tree+0x8f/0x2b0
[   70.835550][ T5818]        do_new_mount+0x24a/0xa40
[   70.840551][ T5818]        __se_sys_mount+0x317/0x410
[   70.845726][ T5818]        do_syscall_64+0xf6/0x210
[   70.850724][ T5818]        entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.857109][ T5818] 
[   70.857109][ T5818] -> #0 (&nilfs->ns_sem){++++}-{4:4}:
[   70.864635][ T5818]        validate_chain+0xb9b/0x2140
[   70.869903][ T5818]        __lock_acquire+0xaac/0xd20
[   70.875075][ T5818]        lock_acquire+0x120/0x360
[   70.880072][ T5818]        down_write+0x96/0x1f0
[   70.884810][ T5818]        __nilfs_error+0x1ca/0x4b0
[   70.889896][ T5818]        nilfs_bmap_propagate+0x108/0x130
[   70.895592][ T5818]        nilfs_collect_file_data+0x4f/0xd0
[   70.901369][ T5818]        nilfs_segctor_apply_buffers+0x161/0x330
[   70.907669][ T5818]        nilfs_segctor_scan_file+0x68e/0x8e0
[   70.913625][ T5818]        nilfs_segctor_do_construct+0x1d46/0x6970
[   70.920017][ T5818]        nilfs_segctor_construct+0x17b/0x690
[   70.925971][ T5818]        nilfs_segctor_thread+0x6f7/0xe00
[   70.931666][ T5818]        kthread+0x70e/0x8a0
[   70.936229][ T5818]        ret_from_fork+0x4b/0x80
[   70.941145][ T5818]        ret_from_fork_asm+0x1a/0x30
[   70.946407][ T5818] 
[   70.946407][ T5818] other info that might help us debug this:
[   70.946407][ T5818] 
[   70.956608][ T5818] Chain exists of:
[   70.956608][ T5818]   &nilfs->ns_sem --> sb_internal#2 --> &nilfs->ns_segctor_sem
[   70.956608][ T5818] 
[   70.969961][ T5818]  Possible unsafe locking scenario:
[   70.969961][ T5818] 
[   70.977387][ T5818]        CPU0                    CPU1
[   70.982729][ T5818]        ----                    ----
[   70.988067][ T5818]   lock(&nilfs->ns_segctor_sem);
[   70.993068][ T5818]                                lock(sb_internal#2);
[   70.999808][ T5818]                                lock(&nilfs->ns_segctor_sem);
[   71.007324][ T5818]   lock(&nilfs->ns_sem);
[   71.011628][ T5818] 
[   71.011628][ T5818]  *** DEADLOCK ***
[   71.011628][ T5818] 
[   71.019745][ T5818] 1 lock held by segctord/5818:
[   71.024566][ T5818]  #0: ffff8880347f02a0 (&nilfs->ns_segctor_sem){++++}-{4:4}, at: nilfs_transaction_lock+0x253/0x4c0
[   71.035414][ T5818] 
[   71.035414][ T5818] stack backtrace:
[   71.041289][ T5818] CPU: 1 UID: 0 PID: 5818 Comm: segctord Not tainted 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 PREEMPT(full) 
[   71.041311][ T5818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
[   71.041326][ T5818] Call Trace:
[   71.041331][ T5818]  <TASK>
[   71.041338][ T5818]  dump_stack_lvl+0x189/0x250
[   71.041355][ T5818]  ? __pfx_dump_stack_lvl+0x10/0x10
[   71.041367][ T5818]  ? __pfx__printk+0x10/0x10
[   71.041381][ T5818]  ? print_lock_name+0xde/0x100
[   71.041395][ T5818]  print_circular_bug+0x2ee/0x310
[   71.041411][ T5818]  check_noncircular+0x134/0x160
[   71.041425][ T5818]  validate_chain+0xb9b/0x2140
[   71.041438][ T5818]  ? __irq_work_queue_local+0x13a/0x3e0
[   71.041449][ T5818]  ? irq_work_queue+0xbc/0x140
[   71.041461][ T5818]  __lock_acquire+0xaac/0xd20
[   71.041473][ T5818]  ? __nilfs_error+0x1ca/0x4b0
[   71.041485][ T5818]  lock_acquire+0x120/0x360
[   71.041496][ T5818]  ? __nilfs_error+0x1ca/0x4b0
[   71.041509][ T5818]  ? _printk+0xcf/0x120
[   71.041522][ T5818]  down_write+0x96/0x1f0
[   71.041534][ T5818]  ? __nilfs_error+0x1ca/0x4b0
[   71.041545][ T5818]  ? __pfx_down_write+0x10/0x10
[   71.041558][ T5818]  __nilfs_error+0x1ca/0x4b0
[   71.041571][ T5818]  ? __pfx___nilfs_error+0x10/0x10
[   71.041584][ T5818]  ? nilfs_bmap_propagate+0x84/0x130
[   71.041598][ T5818]  nilfs_bmap_propagate+0x108/0x130
[   71.041609][ T5818]  nilfs_collect_file_data+0x4f/0xd0
[   71.041619][ T5818]  nilfs_segctor_apply_buffers+0x161/0x330
[   71.041628][ T5818]  ? __pfx_nilfs_collect_file_data+0x10/0x10
[   71.041637][ T5818]  nilfs_segctor_scan_file+0x68e/0x8e0
[   71.041646][ T5818]  ? reacquire_held_locks+0x127/0x1d0
[   71.041658][ T5818]  ? __mark_inode_dirty+0x4a6/0xdf0
[   71.041668][ T5818]  ? __pfx_nilfs_segctor_scan_file+0x10/0x10
[   71.041678][ T5818]  ? nilfs_cpfile_create_checkpoint+0x5ba/0x760
[   71.041688][ T5818]  ? up_write+0x1c4/0x420
[   71.041697][ T5818]  ? nilfs_cpfile_create_checkpoint+0x5ba/0x760
[   71.041707][ T5818]  ? __pfx_nilfs_cpfile_create_checkpoint+0x10/0x10
[   71.041716][ T5818]  ? nilfs_segbuf_extend_segsum+0x2aa/0x3b0
[   71.041728][ T5818]  ? rcu_is_watching+0x15/0xb0
[   71.041742][ T5818]  nilfs_segctor_do_construct+0x1d46/0x6970
[   71.041767][ T5818]  ? __pfx_nilfs_segctor_do_construct+0x10/0x10
[   71.041781][ T5818]  ? __lock_acquire+0xaac/0xd20
[   71.041792][ T5818]  ? do_raw_spin_lock+0x121/0x290
[   71.041803][ T5818]  ? do_raw_spin_unlock+0x122/0x240
[   71.041812][ T5818]  ? _raw_spin_unlock+0x28/0x50
[   71.041819][ T5818]  ? nilfs_segctor_confirm+0x24e/0x2d0
[   71.041828][ T5818]  nilfs_segctor_construct+0x17b/0x690
[   71.041842][ T5818]  nilfs_segctor_thread+0x6f7/0xe00
[   71.041861][ T5818]  ? __pfx_nilfs_segctor_thread+0x10/0x10
[   71.041873][ T5818]  ? _raw_spin_unlock_irqrestore+0xad/0x110
[   71.041882][ T5818]  ? __pfx_autoremove_wake_function+0x10/0x10
[   71.041892][ T5818]  ? __kthread_parkme+0x7b/0x200
[   71.041899][ T5818]  ? __kthread_parkme+0x1a1/0x200
[   71.041908][ T5818]  kthread+0x70e/0x8a0
[   71.041918][ T5818]  ? __pfx_nilfs_segctor_thread+0x10/0x10
[   71.041931][ T5818]  ? __pfx_kthread+0x10/0x10
[   71.041940][ T5818]  ? __pfx_kthread+0x10/0x10
[   71.041948][ T5818]  ? _raw_spin_unlock_irq+0x23/0x50
[   71.041955][ T5818]  ? lockdep_hardirqs_on+0x9c/0x150
[   71.041964][ T5818]  ? __pfx_kthread+0x10/0x10
[   71.041973][ T5818]  ret_from_fork+0x4b/0x80
[   71.041981][ T5818]  ? __pfx_kthread+0x10/0x10
[   71.041990][ T5818]  ret_from_fork_asm+0x1a/0x30
[pid  5815] +++ exited with 1 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5815, si_uid=0, si_status=1, si_utime=0, si_stime=12 /* 0.12 s */} ---
exit_group(0)                           = ?
+++ exited with 0 +++
[   71.042006][ T5818]