./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2717733496

<...>
Warning: Permanently added '10.128.1.193' (ED25519) to the list of known hosts.
execve("./syz-executor2717733496", ["./syz-executor2717733496"], 0x7ffdcc38a8c0 /* 10 vars */) = 0
brk(NULL)                               = 0x555559f56000
brk(0x555559f56d00)                     = 0x555559f56d00
arch_prctl(ARCH_SET_FS, 0x555559f56380) = 0
set_tid_address(0x555559f56650)         = 282
set_robust_list(0x555559f56660, 24)     = 0
rseq(0x555559f56ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor2717733496", 4096) = 28
getrandom("\x30\x2b\x90\x46\xea\x52\x18\x76", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555559f56d00
brk(0x555559f77d00)                     = 0x555559f77d00
brk(0x555559f78000)                     = 0x555559f78000
mprotect(0x7fd274c67000, 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, child_tidptr=0x555559f56650) = 283
./strace-static-x86_64: Process 283 attached
[pid   283] set_robust_list(0x555559f56660, 24) = 0
[pid   283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   283] getppid()                   = 0
[pid   283] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   283] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   283] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   283] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   283] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   283] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   283] unshare(CLONE_NEWNS)        = 0
[pid   283] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   283] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   283] unshare(CLONE_NEWCGROUP)    = 0
[pid   283] unshare(CLONE_NEWUTS)       = 0
[pid   283] unshare(CLONE_SYSVSEM)      = 0
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   283] getpid()                    = 1
[pid   283] 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   283] 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   283] unshare(CLONE_NEWNET)       = 0
[pid   283] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   283] write(3, "0 65535", 7)      = 7
[pid   283] close(3)                    = 0
[pid   283] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   283] write(3, "100000", 6)       = 6
[pid   283] close(3)                    = 0
[pid   283] mkdir("./syz-tmp", 0777)    = 0
[pid   283] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   283] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   283] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   283] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   283] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   283] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   283] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   283] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   283] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   283] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   283] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   283] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   283] mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   283] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   283] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   283] 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   283] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   283] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   283] chdir("/")                  = 0
[   24.957207][   T24] audit: type=1400 audit(1755906687.830:64): avc:  denied  { execmem } for  pid=282 comm="syz-executor271" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   24.976954][   T24] audit: type=1400 audit(1755906687.850:65): avc:  denied  { mounton } for  pid=283 comm="syz-executor271" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   283] umount2("./pivot", MNT_DETACH) = 0
[pid   283] chroot("./newroot")         = 0
[pid   283] chdir("/")                  = 0
[pid   283] mkdir("/dev/gadgetfs", 0777) = 0
[pid   283] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   283] mkdir("/dev/binderfs", 0777) = 0
[pid   283] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   283] symlink("/dev/binderfs", "./binderfs") = 0
[pid   283] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   283] write(1, "executing program\n", 18executing program
) = 18
[pid   283] memfd_create("syzkaller", 0) = 3
[pid   283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd26c7b4000
[   24.998942][   T24] audit: type=1400 audit(1755906687.870:66): avc:  denied  { mounton } for  pid=283 comm="syz-executor271" path="/root/syz-tmp" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   25.022552][   T24] audit: type=1400 audit(1755906687.870:67): avc:  denied  { mount } for  pid=283 comm="syz-executor271" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   25.024454][  T283] request_module fs-gadgetfs succeeded, but still no fs?
[pid   283] 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"..., 524288) = 524288
[pid   283] munmap(0x7fd26c7b4000, 138412032) = 0
[pid   283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid   283] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid   283] close(3)                    = 0
[pid   283] close(4)                    = 0
[   25.045297][   T24] audit: type=1400 audit(1755906687.870:68): avc:  denied  { mounton } for  pid=283 comm="syz-executor271" path="/root/syz-tmp/newroot/dev" dev="tmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   25.076636][   T24] audit: type=1400 audit(1755906687.870:69): avc:  denied  { mount } for  pid=283 comm="syz-executor271" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[pid   283] mkdir("./file1", 0777)      = 0
[   25.098894][   T24] audit: type=1400 audit(1755906687.870:70): avc:  denied  { mounton } for  pid=283 comm="syz-executor271" path="/root/syz-tmp/newroot/sys/kernel/debug" dev="debugfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:debugfs_t tclass=dir permissive=1
[   25.099669][  T283] ======================================================
[   25.099669][  T283] WARNING: the mand mount option is being deprecated and
[   25.099669][  T283]          will be removed in v5.15!
[   25.099669][  T283] ======================================================
[   25.124901][   T24] audit: type=1400 audit(1755906687.870:71): avc:  denied  { mounton } for  pid=283 comm="syz-executor271" path="/root/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14523 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   25.176528][   T24] audit: type=1400 audit(1755906687.870:72): avc:  denied  { unmount } for  pid=283 comm="syz-executor271" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   25.196200][   T24] audit: type=1400 audit(1755906687.900:73): avc:  denied  { mounton } for  pid=283 comm="syz-executor271" path="/dev/gadgetfs" dev="devtmpfs" ino=517 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.222882][  T283] EXT4-fs (loop0): Ignoring removed nobh option
[   25.229725][  T283] EXT4-fs (loop0): Ignoring removed bh option
[   25.235927][  T283] EXT4-fs (loop0): Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE
[pid   283] mount("/dev/loop0", "./file1", "ext4", MS_NOSUID|MS_NODEV|MS_MANDLOCK|MS_STRICTATIME|MS_LAZYTIME, "delalloc,data_err=abort,barrier=0x0000000000000002,dioread_lock,data_err=ignore,max_dir_size_kb=0x00"...) = 0
[pid   283] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid   283] chdir("./file1")            = 0
[pid   283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid   283] ioctl(4, LOOP_CLR_FD)       = 0
[pid   283] close(4)                    = 0
[pid   283] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT, 000) = 4
[pid   283] truncate("./file1", 50331648) = 0
[pid   283] mmap(0x200000000000, 6291456, PROT_READ|PROT_WRITE|PROT_EXEC|PROT_GROWSUP|0x7ffff0, MAP_SHARED|MAP_FIXED|MAP_NONBLOCK|MAP_LOCKED|1<<MAP_HUGE_SHIFT, 4, 0) = 0x200000000000
[pid   283] creat("./bus", 0306)        = 5
[pid   283] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0
[pid   283] openat(AT_FDCWD, "./bus", O_RDONLY|O_CREAT, 000) = 6
[pid   283] openat(AT_FDCWD, "./bus", O_RDWR|O_SYNC|O_NOATIME|O_CLOEXEC) = 7
[pid   283] write(7, "t", 1)            = 1
[pid   283] sendfile(7, 6, NULL, 262143) = 262143
[pid   283] exit_group(1)               = ?
[   25.251521][  T283] EXT4-fs (loop0): mounted filesystem without journal. Opts: delalloc,data_err=abort,barrier=0x0000000000000002,dioread_lock,data_err=ignore,max_dir_size_kb=0x00000000004007b1,data_err=ignore,grpquota,nobh,user_xattr,bh,dioread_nolock,,errors=continue
[   25.318713][   T49] ==================================================================
[   25.326908][   T49] BUG: KASAN: use-after-free in ext4_find_extent+0xbeb/0xe20
[   25.334498][   T49] Read of size 4 at addr ffff888120e56ec4 by task kworker/u4:2/49
[   25.342274][   T49] 
[   25.344609][   T49] CPU: 0 PID: 49 Comm: kworker/u4:2 Not tainted 5.10.240-syzkaller #0
[   25.352906][   T49] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
[   25.362955][   T49] Workqueue: writeback wb_workfn (flush-7:0)
[   25.368957][   T49] Call Trace:
[   25.372232][   T49]  __dump_stack+0x21/0x24
[   25.376532][   T49]  dump_stack_lvl+0x169/0x1d8
[   25.381263][   T49]  ? show_regs_print_info+0x18/0x18
[   25.386531][   T49]  ? thaw_kernel_threads+0x220/0x220
[   25.391903][   T49]  print_address_description+0x7f/0x2c0
[   25.397454][   T49]  ? ext4_find_extent+0xbeb/0xe20
[   25.402480][   T49]  kasan_report+0xe2/0x130
[   25.406965][   T49]  ? __read_extent_tree_block+0x1e8/0x790
[   25.412655][   T49]  ? ext4_find_extent+0xbeb/0xe20
[   25.417767][   T49]  __asan_report_load4_noabort+0x14/0x20
[   25.423380][   T49]  ext4_find_extent+0xbeb/0xe20
[   25.428214][   T49]  ext4_ext_map_blocks+0x1de/0x5d40
[   25.433408][   T49]  ? __stack_depot_save+0x479/0x4c0
[   25.438592][   T49]  ? __kasan_slab_alloc+0xcf/0xf0
[   25.443600][   T49]  ? __kasan_slab_alloc+0xbd/0xf0
[   25.448596][   T49]  ? slab_post_alloc_hook+0x5d/0x2f0
[   25.453855][   T49]  ? kmem_cache_alloc+0x165/0x2e0
[   25.458968][   T49]  ? ext4_alloc_io_end_vec+0x2a/0x160
[   25.464320][   T49]  ? ext4_writepages+0xebd/0x2e00
[   25.469320][   T49]  ? do_writepages+0x12a/0x270
[   25.474068][   T49]  ? __writeback_single_inode+0xd5/0xa20
[   25.479777][   T49]  ? writeback_sb_inodes+0x860/0x1400
[   25.485119][   T49]  ? worker_thread+0xa6a/0x13b0
[   25.489959][   T49]  ? kthread+0x346/0x3d0
[   25.494171][   T49]  ? ret_from_fork+0x1f/0x30
[   25.499357][   T49]  ? ext4_ext_release+0x10/0x10
[   25.504203][   T49]  ? ext4_es_lookup_extent+0x32d/0x8c0
[   25.509828][   T49]  ext4_map_blocks+0x978/0x1bc0
[   25.514667][   T49]  ? ext4_issue_zeroout+0x1a0/0x1a0
[   25.519947][   T49]  ? ext4_inode_journal_mode+0x19a/0x480
[   25.525562][   T49]  ext4_writepages+0x11d5/0x2e00
[   25.530709][   T49]  ? ext4_readpage+0x220/0x220
[   25.535464][   T49]  ? enqueue_task_fair+0xac3/0x2250
[   25.541234][   T49]  ? ext4_readpage+0x220/0x220
[   25.546070][   T49]  do_writepages+0x12a/0x270
[   25.550676][   T49]  ? __kasan_check_read+0x11/0x20
[   25.555765][   T49]  ? __writepage+0x130/0x130
[   25.560407][   T49]  ? __kasan_check_write+0x14/0x20
[   25.565500][   T49]  ? _raw_spin_lock+0x8e/0xe0
[   25.570182][   T49]  ? __kasan_check_write+0x14/0x20
[   25.575304][   T49]  __writeback_single_inode+0xd5/0xa20
[   25.580747][   T49]  ? wbc_attach_and_unlock_inode+0x385/0x590
[   25.586814][   T49]  writeback_sb_inodes+0x860/0x1400
[   25.592001][   T49]  ? queue_io+0x4c0/0x4c0
[   25.596321][   T49]  ? __kasan_check_read+0x11/0x20
[   25.601317][   T49]  ? queue_io+0x385/0x4c0
[   25.605613][   T49]  wb_writeback+0x3e3/0xb90
[   25.610084][   T49]  ? wb_io_lists_depopulated+0x180/0x180
[   25.615691][   T49]  ? set_worker_desc+0x155/0x1c0
[   25.620601][   T49]  ? update_load_avg+0x4dc/0x14f0
[   25.625593][   T49]  ? __kasan_check_write+0x14/0x20
[   25.630672][   T49]  wb_workfn+0x38f/0xe20
[   25.634887][   T49]  ? inode_wait_for_writeback+0x200/0x200
[   25.640574][   T49]  ? _raw_spin_unlock_irq+0x4e/0x70
[   25.645759][   T49]  ? finish_task_switch+0x12e/0x5a0
[   25.650935][   T49]  ? __switch_to_asm+0x34/0x60
[   25.655893][   T49]  ? __schedule+0xb4f/0x1310
[   25.660462][   T49]  ? __kasan_check_read+0x11/0x20
[   25.665545][   T49]  ? read_word_at_a_time+0x12/0x20
[   25.670642][   T49]  ? strscpy+0x9b/0x290
[   25.674763][   T49]  process_one_work+0x6e1/0xba0
[   25.679589][   T49]  worker_thread+0xa6a/0x13b0
[   25.684245][   T49]  ? _raw_spin_lock_irqsave+0xb0/0x110
[   25.689676][   T49]  ? __kasan_check_read+0x11/0x20
[   25.694708][   T49]  kthread+0x346/0x3d0
[   25.698924][   T49]  ? worker_clr_flags+0x190/0x190
[   25.703968][   T49]  ? kthread_blkcg+0xd0/0xd0
[   25.708562][   T49]  ret_from_fork+0x1f/0x30
[   25.712982][   T49] 
[   25.715483][   T49] The buggy address belongs to the page:
[   25.721311][   T49] page:ffffea0004839580 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x120e56
[   25.731643][   T49] flags: 0x4000000000000000()
[   25.736455][   T49] raw: 4000000000000000 ffffea0004839588 ffffea0004839588 0000000000000000
[   25.745020][   T49] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[   25.753594][   T49] page dumped because: kasan: bad access detected
[   25.760076][   T49] page_owner info is not present (never set?)
[   25.766126][   T49] 
[   25.768425][   T49] Memory state around the buggy address:
[   25.774115][   T49]  ffff888120e56d80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   25.782173][   T49]  ffff888120e56e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   25.790226][   T49] >ffff888120e56e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   25.798282][   T49]                                            ^
[   25.804424][   T49]  ffff888120e56f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   25.812462][   T49]  ffff888120e56f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[   25.820583][   T49] ==================================================================
[   25.828612][   T49] Disabling lock debugging due to kernel taint
[   25.834924][   T49] EXT4-fs error (device loop0): ext4_map_blocks:740: inode #15: block 1: comm kworker/u4:2: lblock 1 mapped to illegal pblock 1 (length 3)
[   25.849379][   T49] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 1 with max blocks 3 with error 117
[   25.861843][   T49] EXT4-fs (loop0): This should not happen!! Data will be lost
[   25.861843][   T49] 
[   25.871830][   T49] EXT4-fs error (device loop0): __ext4_get_inode_loc:4438: comm kworker/u4:2: Invalid inode table block 8391460049216894068 in block_group 0
[   25.886678][   T49] EXT4-fs error (device loop0): ext4_map_blocks:740: inode #15: block 16: comm kworker/u4:2: lblock 16 mapped to illegal pblock 16 (length 1)
[   25.901493][   T49] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 16 with max blocks 1 with error 117
[   25.913888][   T49] EXT4-fs (loop0): This should not happen!! Data will be lost
[   25.913888][   T49] 
[pid   283] +++ exited with 1 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=283, si_uid=0, si_status=1, si_utime=0, si_stime=13} ---
exit_group(0)                           = ?
+++ exited with 0 +++