./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1765755507

<...>
Warning: Permanently added '10.128.0.231' (ED25519) to the list of known hosts.
execve("./syz-executor1765755507", ["./syz-executor1765755507"], 0x7ffd2af4e860 /* 10 vars */) = 0
brk(NULL)                               = 0x5555872aa000
brk(0x5555872aad00)                     = 0x5555872aad00
arch_prctl(ARCH_SET_FS, 0x5555872aa380) = 0
set_tid_address(0x5555872aa650)         = 5838
set_robust_list(0x5555872aa660, 24)     = 0
rseq(0x5555872aaca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1765755507", 4096) = 28
getrandom("\x8c\x1a\xbf\x42\x4c\x0c\xff\x30", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x5555872aad00
brk(0x5555872cbd00)                     = 0x5555872cbd00
brk(0x5555872cc000)                     = 0x5555872cc000
mprotect(0x7fd800221000, 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
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5839 attached
 <unfinished ...>
[pid  5839] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5838] <... clone resumed>, child_tidptr=0x5555872aa650) = 5839
[pid  5839] <... set_robust_list resumed>) = 0
[pid  5838] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached
 <unfinished ...>
[pid  5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR <unfinished ...>
[pid  5838] <... clone resumed>, child_tidptr=0x5555872aa650) = 5840
[pid  5840] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5838] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  5840] <... set_robust_list resumed>) = 0
[pid  5839] <... openat resumed>)       = 3
./strace-static-x86_64: Process 5841 attached
[pid  5840] openat(AT_FDCWD, "/dev/loop1", O_RDWR <unfinished ...>
[pid  5839] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  5841] set_robust_list(0x5555872aa660, 24) = 0
[pid  5840] <... openat resumed>)       = 3
[pid  5839] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  5838] <... clone resumed>, child_tidptr=0x5555872aa650) = 5841
[pid  5841] openat(AT_FDCWD, "/dev/loop2", O_RDWR <unfinished ...>
[pid  5840] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  5839] close(3 <unfinished ...>
[pid  5838] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  5841] <... openat resumed>)       = 3
[pid  5840] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  5839] <... close resumed>)        = 0
[pid  5839] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5842 attached
 <unfinished ...>
[pid  5841] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  5840] close(3 <unfinished ...>
[pid  5838] <... clone resumed>, child_tidptr=0x5555872aa650) = 5842
[pid  5841] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  5840] <... close resumed>)        = 0
[pid  5838] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  5841] close(3 <unfinished ...>
[pid  5840] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  5842] set_robust_list(0x5555872aa660, 24) = 0
[pid  5841] <... close resumed>)        = 0
./strace-static-x86_64: Process 5845 attached
./strace-static-x86_64: Process 5843 attached
[pid  5842] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  5841] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5844 attached
 <unfinished ...>
[pid  5839] <... clone resumed>, child_tidptr=0x5555872aa650) = 5845
./strace-static-x86_64: Process 5846 attached
[pid  5838] <... clone resumed>, child_tidptr=0x5555872aa650) = 5844
[pid  5845] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5844] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5843] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5842] <... openat resumed>)       = 3
[pid  5841] <... clone resumed>, child_tidptr=0x5555872aa650) = 5846
[pid  5840] <... clone resumed>, child_tidptr=0x5555872aa650) = 5843
[pid  5846] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5844] <... set_robust_list resumed>) = 0
[pid  5843] <... set_robust_list resumed>) = 0
[pid  5846] <... set_robust_list resumed>) = 0
[pid  5844] openat(AT_FDCWD, "/dev/loop4", O_RDWR <unfinished ...>
[pid  5843] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5846] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5842] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  5846] <... prctl resumed>)        = 0
[pid  5843] <... prctl resumed>)        = 0
[pid  5842] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  5846] setpgid(0, 0 <unfinished ...>
[pid  5844] <... openat resumed>)       = 3
[pid  5843] setpgid(0, 0 <unfinished ...>
[pid  5846] <... setpgid resumed>)      = 0
[pid  5843] <... setpgid resumed>)      = 0
[pid  5842] close(3 <unfinished ...>
[pid  5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5842] <... close resumed>)        = 0
[pid  5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5842] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  5845] <... set_robust_list resumed>) = 0
./strace-static-x86_64: Process 5848 attached
[pid  5846] <... openat resumed>)       = 3
[pid  5845] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5844] ioctl(3, LOOP_CLR_FD <unfinished ...>
[pid  5843] <... openat resumed>)       = 3
[pid  5846] write(3, "1000", 4 <unfinished ...>
[pid  5844] <... ioctl resumed>)        = -1 ENXIO (No such device or address)
[pid  5845] <... prctl resumed>)        = 0
[pid  5846] <... write resumed>)        = 4
[pid  5845] setpgid(0, 0 <unfinished ...>
[pid  5844] close(3 <unfinished ...>
[pid  5843] write(3, "1000", 4 <unfinished ...>
[pid  5848] set_robust_list(0x5555872aa660, 24 <unfinished ...>
[pid  5846] close(3 <unfinished ...>
[pid  5844] <... close resumed>)        = 0
[pid  5843] <... write resumed>)        = 4
[pid  5848] <... set_robust_list resumed>) = 0
[pid  5846] <... close resumed>)        = 0
[pid  5844] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD <unfinished ...>
[pid  5843] close(3 <unfinished ...>
[pid  5848] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5846] write(1, "executing program\n", 18 <unfinished ...>
[pid  5845] <... setpgid resumed>)      = 0
[pid  5843] <... close resumed>)        = 0
[pid  5842] <... clone resumed>, child_tidptr=0x5555872aa650) = 5848
./strace-static-x86_64: Process 5849 attached
executing program
executing program
[pid  5848] <... prctl resumed>)        = 0
[pid  5846] <... write resumed>)        = 18
[pid  5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5843] write(1, "executing program\n", 18 <unfinished ...>
[pid  5849] set_robust_list(0x5555872aa660, 24) = 0
[pid  5848] setpgid(0, 0 <unfinished ...>
[pid  5846] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5845] <... openat resumed>)       = 3
[pid  5843] <... write resumed>)        = 18
[pid  5849] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5845] write(3, "1000", 4 <unfinished ...>
[pid  5849] <... prctl resumed>)        = 0
[pid  5845] <... write resumed>)        = 4
[pid  5845] close(3 <unfinished ...>
[pid  5849] setpgid(0, 0 <unfinished ...>
[pid  5845] <... close resumed>)        = 0
[pid  5849] <... setpgid resumed>)      = 0
[pid  5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5848] <... setpgid resumed>)      = 0
executing program
[pid  5846] <... memfd_create resumed>) = 3
[pid  5845] write(1, "executing program\n", 18 <unfinished ...>
[pid  5844] <... clone resumed>, child_tidptr=0x5555872aa650) = 5849
[pid  5843] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5849] <... openat resumed>)       = 3
[pid  5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid  5845] <... write resumed>)        = 18
[pid  5849] write(3, "1000", 4 <unfinished ...>
[pid  5848] <... openat resumed>)       = 3
[pid  5846] <... mmap resumed>)         = 0x7fd7f7c00000
[pid  5843] <... memfd_create resumed>) = 3
[pid  5849] <... write resumed>)        = 4
[pid  5848] write(3, "1000", 4 <unfinished ...>
[pid  5845] memfd_create("syzkaller", 0executing program
 <unfinished ...>
[pid  5849] close(3)                    = 0
[pid  5849] write(1, "executing program\n", 18) = 18
[pid  5848] <... write resumed>)        = 4
[pid  5849] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5848] close(3)                    = 0
[pid  5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0executing program
 <unfinished ...>
[pid  5848] write(1, "executing program\n", 18 <unfinished ...>
[pid  5843] <... mmap resumed>)         = 0x7fd7f7c00000
[pid  5849] <... memfd_create resumed>) = 3
[pid  5848] <... write resumed>)        = 18
[pid  5845] <... memfd_create resumed>) = 3
[pid  5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid  5848] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid  5849] <... mmap resumed>)         = 0x7fd7f7c00000
[pid  5848] <... memfd_create resumed>) = 3
[pid  5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd7f7c00000
[pid  5845] <... mmap resumed>)         = 0x7fd7f7c00000
[pid  5843] 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"..., 16777216 <unfinished ...>
[pid  5845] 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"..., 16777216 <unfinished ...>
[pid  5846] 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"..., 16777216 <unfinished ...>
[pid  5849] 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"..., 16777216 <unfinished ...>
[pid  5848] 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"..., 16777216 <unfinished ...>
[pid  5843] <... write resumed>)        = 16777216
[pid  5845] <... write resumed>)        = 16777216
[pid  5843] munmap(0x7fd7f7c00000, 138412032 <unfinished ...>
[pid  5845] munmap(0x7fd7f7c00000, 138412032 <unfinished ...>
[pid  5848] <... write resumed>)        = 16777216
[pid  5848] munmap(0x7fd7f7c00000, 138412032 <unfinished ...>
[pid  5849] <... write resumed>)        = 16777216
[pid  5846] <... write resumed>)        = 16777216
[pid  5846] munmap(0x7fd7f7c00000, 138412032 <unfinished ...>
[pid  5849] munmap(0x7fd7f7c00000, 138412032 <unfinished ...>
[pid  5843] <... munmap resumed>)       = 0
[pid  5843] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4
[pid  5843] ioctl(4, LOOP_SET_FD, 3 <unfinished ...>
[pid  5845] <... munmap resumed>)       = 0
[pid  5845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5845] ioctl(4, LOOP_SET_FD, 3 <unfinished ...>
[pid  5843] <... ioctl resumed>)        = 0
[pid  5843] close(3 <unfinished ...>
[pid  5848] <... munmap resumed>)       = 0
[pid  5843] <... close resumed>)        = 0
[pid  5843] close(4 <unfinished ...>
[pid  5848] openat(AT_FDCWD, "/dev/loop3", O_RDWR <unfinished ...>
[pid  5846] <... munmap resumed>)       = 0
[pid  5843] <... close resumed>)        = 0
[pid  5848] <... openat resumed>)       = 4
[pid  5843] mkdir("./file1", 0777 <unfinished ...>
[pid  5845] <... ioctl resumed>)        = 0
[pid  5845] close(3)                    = 0
[pid  5845] close(4 <unfinished ...>
[pid  5843] <... mkdir resumed>)        = 0
[   95.210927][ T5843] loop1: detected capacity change from 0 to 32768
[   95.234559][ T5845] loop0: detected capacity change from 0 to 32768
[pid  5848] ioctl(4, LOOP_SET_FD, 3 <unfinished ...>
[pid  5843] mount("/dev/loop1", "./file1", "gfs2", MS_NODIRATIME|MS_STRICTATIME, "quota_quantum=0x0000000000000004,suiddir,quota,barrier,acl,quota=off,discard,noloccookie,quota=on,lo"... <unfinished ...>
[pid  5845] <... close resumed>)        = 0
[pid  5845] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5845] mount("/dev/loop0", "./file1", "gfs2", MS_NODIRATIME|MS_STRICTATIME, "quota_quantum=0x0000000000000004,suiddir,quota,barrier,acl,quota=off,discard,noloccookie,quota=on,lo"... <unfinished ...>
[pid  5849] <... munmap resumed>)       = 0
[pid  5846] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4
[pid  5849] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4
[pid  5849] ioctl(4, LOOP_SET_FD, 3 <unfinished ...>
[   95.266677][ T5848] loop3: detected capacity change from 0 to 32768
[   95.292105][ T5846] loop2: detected capacity change from 0 to 32768
[   95.292733][ T5849] loop4: detected capacity change from 0 to 32768
[pid  5846] ioctl(4, LOOP_SET_FD, 3 <unfinished ...>
[pid  5848] <... ioctl resumed>)        = 0
[pid  5848] close(3)                    = 0
[pid  5848] close(4)                    = 0
[pid  5848] mkdir("./file1", 0777 <unfinished ...>
[pid  5849] <... ioctl resumed>)        = 0
[pid  5848] <... mkdir resumed>)        = -1 EEXIST (File exists)
[pid  5849] close(3 <unfinished ...>
[pid  5848] mount("/dev/loop3", "./file1", "gfs2", MS_NODIRATIME|MS_STRICTATIME, "quota_quantum=0x0000000000000004,suiddir,quota,barrier,acl,quota=off,discard,noloccookie,quota=on,lo"... <unfinished ...>
[pid  5849] <... close resumed>)        = 0
[pid  5849] close(4)                    = 0
[   95.311382][ T5845] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
[   95.321061][ T5843] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[   95.329404][ T5843] CPU: 1 UID: 0 PID: 5843 Comm: syz-executor176 Not tainted 6.15.0-next-20250528-syzkaller #0 PREEMPT(full) 
[   95.329434][ T5843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   95.329456][ T5843] Call Trace:
[   95.329465][ T5843]  <TASK>
[   95.329474][ T5843]  dump_stack_lvl+0x189/0x250
[pid  5849] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[pid  5846] <... ioctl resumed>)        = 0
[pid  5846] close(3)                    = 0
[pid  5846] close(4)                    = 0
[pid  5849] mount("/dev/loop4", "./file1", "gfs2", MS_NODIRATIME|MS_STRICTATIME, "quota_quantum=0x0000000000000004,suiddir,quota,barrier,acl,quota=off,discard,noloccookie,quota=on,lo"... <unfinished ...>
[pid  5846] mkdir("./file1", 0777)      = -1 EEXIST (File exists)
[   95.329519][ T5843]  ? kernfs_path_from_node+0x2c/0x260
[   95.329555][ T5843]  ? __pfx_dump_stack_lvl+0x10/0x10
[   95.329575][ T5843]  ? __pfx__printk+0x10/0x10
[   95.329601][ T5843]  ? kernfs_path_from_node+0x2c/0x260
[   95.329627][ T5843]  ? kernfs_path_from_node+0x2c/0x260
[   95.329657][ T5843]  ? kernfs_path_from_node+0x22c/0x260
[   95.329683][ T5843]  ? kernfs_path_from_node+0x2c/0x260
[   95.329715][ T5843]  sysfs_create_dir_ns+0x259/0x280
[   95.329745][ T5843]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[   95.329775][ T5843]  ? do_raw_spin_unlock+0x122/0x240
[   95.329806][ T5843]  kobject_add_internal+0x59f/0xb40
[   95.329855][ T5843]  kobject_init_and_add+0x125/0x190
[   95.329894][ T5843]  ? __pfx_kobject_init_and_add+0x10/0x10
[   95.329928][ T5843]  ? __raw_spin_lock_init+0x45/0x100
[   95.329955][ T5843]  ? __init_swait_queue_head+0xa9/0x150
[   95.329984][ T5843]  gfs2_sys_fs_add+0x237/0x470
[   95.330019][ T5843]  ? __pfx_gfs2_sys_fs_add+0x10/0x10
[   95.330060][ T5843]  ? is_dynamic_key+0xd6/0x1c0
[   95.330088][ T5843]  ? __pfx_alloc_workqueue+0x10/0x10
[   95.330130][ T5843]  gfs2_fill_super+0x1348/0x2010
[   95.330174][ T5843]  ? __pfx_gfs2_fill_super+0x10/0x10
[   95.330204][ T5843]  ? sb_set_blocksize+0x104/0x180
[   95.330235][ T5843]  ? setup_bdev_super+0x4c1/0x5b0
[   95.330260][ T5843]  get_tree_bdev_flags+0x40e/0x4d0
[   95.330282][ T5843]  ? __pfx_gfs2_fill_super+0x10/0x10
[   95.330309][ T5843]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[   95.330339][ T5843]  ? rcu_is_watching+0x15/0xb0
[   95.330366][ T5843]  gfs2_get_tree+0x51/0x1e0
[   95.330395][ T5843]  vfs_get_tree+0x92/0x2b0
[   95.330421][ T5843]  do_new_mount+0x24a/0xa40
[   95.330455][ T5843]  __se_sys_mount+0x317/0x410
[   95.330488][ T5843]  ? __pfx___se_sys_mount+0x10/0x10
[   95.330511][ T5843]  ? rcu_is_watching+0x15/0xb0
[   95.330538][ T5843]  ? __x64_sys_mount+0x20/0xc0
[   95.330566][ T5843]  do_syscall_64+0xfa/0x3b0
[   95.330596][ T5843]  ? lockdep_hardirqs_on+0x9c/0x150
[   95.330624][ T5843]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   95.330644][ T5843]  ? clear_bhb_loop+0x60/0xb0
[   95.330669][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   95.330689][ T5843] RIP: 0033:0x7fd80019cf1a
[   95.330713][ T5843] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   95.330731][ T5843] RSP: 002b:00007fffbd8add68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[   95.330753][ T5843] RAX: ffffffffffffffda RBX: 00007fffbd8add80 RCX: 00007fd80019cf1a
[   95.330768][ T5843] RDX: 0000200000000240 RSI: 0000200000001c00 RDI: 00007fffbd8add80
[   95.330781][ T5843] RBP: 0000200000001c00 R08: 00007fffbd8addc0 R09: 00000000000125dc
[   95.330795][ T5843] R10: 0000000001000800 R11: 0000000000000282 R12: 0000200000000240
[   95.330809][ T5843] R13: 00007fffbd8addc0 R14: 0000000000000003 R15: 0000000001000800
[   95.330840][ T5843]  </TASK>
[   95.330869][ T5843] kobject: kobject_add_internal failed for syz:syz with -EEXIST, don't try to register things with the same name in the same directory.
[   95.348074][ T5845] gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
[   95.413337][ T5843] gfs2: fsid=syz:syz: error -17 adding sysfs files
[   95.470522][ T5848] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
[   95.478033][ T5843] ==================================================================
[   95.685623][ T5843] BUG: KASAN: null-ptr-deref in gfs2_drop_inode+0x20c/0x3a0
[   95.692950][ T5843] Read of size 8 at addr 00000000000000a8 by task syz-executor176/5843
[   95.701189][ T5843] 
[   95.703521][ T5843] CPU: 1 UID: 0 PID: 5843 Comm: syz-executor176 Not tainted 6.15.0-next-20250528-syzkaller #0 PREEMPT(full) 
[   95.703543][ T5843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   95.703554][ T5843] Call Trace:
[   95.703564][ T5843]  <TASK>
[   95.703572][ T5843]  dump_stack_lvl+0x189/0x250
[   95.703593][ T5843]  ? __pfx_dump_stack_lvl+0x10/0x10
[   95.703609][ T5843]  ? _raw_spin_lock_irqsave+0xb3/0xf0
[   95.703634][ T5843]  ? gfs2_drop_inode+0x20c/0x3a0
[   95.703660][ T5843]  ? gfs2_drop_inode+0x20c/0x3a0
[   95.703684][ T5843]  kasan_report+0x118/0x150
[   95.703705][ T5843]  ? gfs2_drop_inode+0x20c/0x3a0
[   95.703732][ T5843]  kasan_check_range+0x2b0/0x2c0
[   95.703753][ T5843]  gfs2_drop_inode+0x20c/0x3a0
[   95.703779][ T5843]  iput+0x45a/0x9d0
[   95.703803][ T5843]  gfs2_fill_super+0x1418/0x2010
[   95.703831][ T5843]  ? __pfx_gfs2_fill_super+0x10/0x10
[   95.703854][ T5843]  ? sb_set_blocksize+0x104/0x180
[   95.703878][ T5843]  ? setup_bdev_super+0x4c1/0x5b0
[   95.703897][ T5843]  get_tree_bdev_flags+0x40e/0x4d0
[   95.703914][ T5843]  ? __pfx_gfs2_fill_super+0x10/0x10
[   95.703935][ T5843]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[   95.703953][ T5843]  ? rcu_is_watching+0x15/0xb0
[   95.703970][ T5843]  gfs2_get_tree+0x51/0x1e0
[   95.703992][ T5843]  vfs_get_tree+0x92/0x2b0
[   95.704010][ T5843]  do_new_mount+0x24a/0xa40
[   95.704034][ T5843]  __se_sys_mount+0x317/0x410
[   95.704057][ T5843]  ? __pfx___se_sys_mount+0x10/0x10
[   95.704076][ T5843]  ? rcu_is_watching+0x15/0xb0
[   95.704093][ T5843]  ? __x64_sys_mount+0x20/0xc0
[   95.704114][ T5843]  do_syscall_64+0xfa/0x3b0
[   95.704139][ T5843]  ? lockdep_hardirqs_on+0x9c/0x150
[   95.704162][ T5843]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   95.704179][ T5843]  ? clear_bhb_loop+0x60/0xb0
[   95.704198][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   95.704215][ T5843] RIP: 0033:0x7fd80019cf1a
[   95.704231][ T5843] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   95.704246][ T5843] RSP: 002b:00007fffbd8add68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[   95.704263][ T5843] RAX: ffffffffffffffda RBX: 00007fffbd8add80 RCX: 00007fd80019cf1a
[   95.704276][ T5843] RDX: 0000200000000240 RSI: 0000200000001c00 RDI: 00007fffbd8add80
[   95.704294][ T5843] RBP: 0000200000001c00 R08: 00007fffbd8addc0 R09: 00000000000125dc
[   95.704306][ T5843] R10: 0000000001000800 R11: 0000000000000282 R12: 0000200000000240
[   95.704317][ T5843] R13: 00007fffbd8addc0 R14: 0000000000000003 R15: 0000000001000800
[   95.704336][ T5843]  </TASK>
[   95.704342][ T5843] ==================================================================
[   95.964188][ T5843] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[   95.971440][ T5843] CPU: 1 UID: 0 PID: 5843 Comm: syz-executor176 Not tainted 6.15.0-next-20250528-syzkaller #0 PREEMPT(full) 
[   95.982993][ T5843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   95.993055][ T5843] Call Trace:
[   95.996342][ T5843]  <TASK>
[   95.999284][ T5843]  dump_stack_lvl+0x99/0x250
[   96.003885][ T5843]  ? __asan_memcpy+0x40/0x70
[   96.008488][ T5843]  ? __pfx_dump_stack_lvl+0x10/0x10
[   96.013700][ T5843]  ? __pfx__printk+0x10/0x10
[   96.018306][ T5843]  panic+0x2db/0x790
[   96.022213][ T5843]  ? lockdep_hardirqs_on+0x9c/0x150
[   96.027430][ T5843]  ? __pfx_panic+0x10/0x10
[   96.031866][ T5843]  ? _raw_spin_unlock_irqrestore+0xa8/0x110
[   96.037771][ T5843]  ? _raw_spin_unlock_irqrestore+0xad/0x110
[   96.043675][ T5843]  ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[   96.050015][ T5843]  ? gfs2_drop_inode+0x20c/0x3a0
[   96.054965][ T5843]  check_panic_on_warn+0x89/0xb0
[   96.059914][ T5843]  ? gfs2_drop_inode+0x20c/0x3a0
[   96.064867][ T5843]  end_report+0x78/0x160
[   96.069120][ T5843]  kasan_report+0x129/0x150
[   96.073634][ T5843]  ? gfs2_drop_inode+0x20c/0x3a0
[   96.078594][ T5843]  kasan_check_range+0x2b0/0x2c0
[   96.083546][ T5843]  gfs2_drop_inode+0x20c/0x3a0
[   96.088326][ T5843]  iput+0x45a/0x9d0
[   96.092148][ T5843]  gfs2_fill_super+0x1418/0x2010
[   96.097103][ T5843]  ? __pfx_gfs2_fill_super+0x10/0x10
[   96.102398][ T5843]  ? sb_set_blocksize+0x104/0x180
[   96.107433][ T5843]  ? setup_bdev_super+0x4c1/0x5b0
[   96.112461][ T5843]  get_tree_bdev_flags+0x40e/0x4d0
[   96.117583][ T5843]  ? __pfx_gfs2_fill_super+0x10/0x10
[   96.122880][ T5843]  ? __pfx_get_tree_bdev_flags+0x10/0x10
[   96.128525][ T5843]  ? rcu_is_watching+0x15/0xb0
[   96.133327][ T5843]  gfs2_get_tree+0x51/0x1e0
[   96.137931][ T5843]  vfs_get_tree+0x92/0x2b0
[   96.142363][ T5843]  do_new_mount+0x24a/0xa40
[   96.146876][ T5843]  __se_sys_mount+0x317/0x410
[   96.151574][ T5843]  ? __pfx___se_sys_mount+0x10/0x10
[   96.156786][ T5843]  ? rcu_is_watching+0x15/0xb0
[   96.161556][ T5843]  ? __x64_sys_mount+0x20/0xc0
[   96.166418][ T5843]  do_syscall_64+0xfa/0x3b0
[   96.170957][ T5843]  ? lockdep_hardirqs_on+0x9c/0x150
[   96.176167][ T5843]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   96.182238][ T5843]  ? clear_bhb_loop+0x60/0xb0
[   96.187013][ T5843]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   96.192913][ T5843] RIP: 0033:0x7fd80019cf1a
[   96.197343][ T5843] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
[   96.217128][ T5843] RSP: 002b:00007fffbd8add68 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
[   96.225659][ T5843] RAX: ffffffffffffffda RBX: 00007fffbd8add80 RCX: 00007fd80019cf1a
[   96.233729][ T5843] RDX: 0000200000000240 RSI: 0000200000001c00 RDI: 00007fffbd8add80
[   96.241711][ T5843] RBP: 0000200000001c00 R08: 00007fffbd8addc0 R09: 00000000000125dc
[   96.249693][ T5843] R10: 0000000001000800 R11: 0000000000000282 R12: 0000200000000240
[   96.257670][ T5843] R13: 00007fffbd8addc0 R14: 0000000000000003 R15: 0000000001000800
[   96.265655][ T5843]  </TASK>
[   96.268937][ T5843] Kernel Offset: disabled
[   96.273297][ T5843] Rebooting in 86400 seconds..