./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor925019371 <...> Warning: Permanently added '10.128.1.57' (ED25519) to the list of known hosts. execve("./syz-executor925019371", ["./syz-executor925019371"], 0x7ffe273daa90 /* 10 vars */) = 0 brk(NULL) = 0x55556f841000 brk(0x55556f841d00) = 0x55556f841d00 arch_prctl(ARCH_SET_FS, 0x55556f841380) = 0 set_tid_address(0x55556f841650) = 5846 set_robust_list(0x55556f841660, 24) = 0 rseq(0x55556f841ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor925019371", 4096) = 27 getrandom("\x47\xf2\xd0\x10\x81\x10\x3d\x38", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556f841d00 brk(0x55556f862d00) = 0x55556f862d00 brk(0x55556f863000) = 0x55556f863000 mprotect(0x7f84a0730000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556f841650) = 5847 ./strace-static-x86_64: Process 5847 attached [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5847] set_robust_list(0x55556f841660, 24) = 0 [pid 5847] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5848 attached [pid 5846] <... clone resumed>, child_tidptr=0x55556f841650) = 5848 [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] set_robust_list(0x55556f841660, 24./strace-static-x86_64: Process 5849 attached ) = 0 [pid 5849] set_robust_list(0x55556f841660, 24 [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5847] <... clone resumed>, child_tidptr=0x55556f841650) = 5849 ./strace-static-x86_64: Process 5850 attached [pid 5849] <... set_robust_list resumed>) = 0 [pid 5846] <... clone resumed>, child_tidptr=0x55556f841650) = 5850 ./strace-static-x86_64: Process 5851 attached [pid 5850] set_robust_list(0x55556f841660, 24 [pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5848] <... clone resumed>, child_tidptr=0x55556f841650) = 5851 [pid 5851] set_robust_list(0x55556f841660, 24 [pid 5850] <... set_robust_list resumed>) = 0 [pid 5849] <... prctl resumed>) = 0 [pid 5851] <... set_robust_list resumed>) = 0 [pid 5850] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5849] setpgid(0, 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5849] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5852 attached [pid 5846] <... clone resumed>, child_tidptr=0x55556f841650) = 5852 [pid 5852] set_robust_list(0x55556f841660, 24./strace-static-x86_64: Process 5853 attached [pid 5846] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5853] set_robust_list(0x55556f841660, 24 [pid 5851] <... prctl resumed>) = 0 [pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5853] <... set_robust_list resumed>) = 0 [pid 5852] <... set_robust_list resumed>) = 0 [pid 5851] setpgid(0, 0 [pid 5850] <... clone resumed>, child_tidptr=0x55556f841650) = 5853 [pid 5849] <... openat resumed>) = 3 [pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5851] <... setpgid resumed>) = 0 [pid 5853] <... prctl resumed>) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program executing program [pid 5849] write(3, "1000", 4 [pid 5853] setpgid(0, 0 [pid 5851] <... openat resumed>) = 3 [pid 5849] <... write resumed>) = 4 [pid 5853] <... setpgid resumed>) = 0 [pid 5852] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5851] write(3, "1000", 4 [pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5851] <... write resumed>) = 4 [pid 5849] close(3 [pid 5851] close(3 [pid 5853] <... openat resumed>) = 3 [pid 5851] <... close resumed>) = 0 [pid 5849] <... close resumed>) = 0 [pid 5851] write(1, "executing program\n", 18 [pid 5849] write(1, "executing program\n", 18 [pid 5851] <... write resumed>) = 18 [pid 5849] <... write resumed>) = 18 ./strace-static-x86_64: Process 5854 attached [pid 5853] write(3, "1000", 4 [pid 5851] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5849] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5853] <... write resumed>) = 4 [pid 5853] close(3./strace-static-x86_64: Process 5855 attached [pid 5846] <... clone resumed>, child_tidptr=0x55556f841650) = 5855 [pid 5854] set_robust_list(0x55556f841660, 24 [pid 5853] <... close resumed>) = 0 [pid 5854] <... set_robust_list resumed>) = 0 [pid 5855] set_robust_list(0x55556f841660, 24 [pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5853] write(1, "executing program\n", 18executing program [pid 5852] <... clone resumed>, child_tidptr=0x55556f841650) = 5854 [pid 5851] <... openat resumed>) = 3 [pid 5849] <... openat resumed>) = 3 [pid 5855] <... set_robust_list resumed>) = 0 [pid 5854] <... prctl resumed>) = 0 [pid 5853] <... write resumed>) = 18 [pid 5855] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5854] setpgid(0, 0 [pid 5853] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5851] dup(3 [pid 5849] dup(3 [pid 5854] <... setpgid resumed>) = 0 [pid 5853] <... openat resumed>) = 3 [pid 5851] <... dup resumed>) = 4 [pid 5849] <... dup resumed>) = 4 [pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5853] dup(3 [pid 5851] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5849] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5854] <... openat resumed>) = 3 [pid 5853] <... dup resumed>) = 4 ./strace-static-x86_64: Process 5856 attached [pid 5855] <... clone resumed>, child_tidptr=0x55556f841650) = 5856 [pid 5854] write(3, "1000", 4 [pid 5856] set_robust_list(0x55556f841660, 24 [pid 5853] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5856] <... set_robust_list resumed>) = 0 [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5854] <... write resumed>) = 4 [pid 5856] setpgid(0, 0 [pid 5854] close(3 [pid 5856] <... setpgid resumed>) = 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5854] <... close resumed>) = 0 [pid 5856] <... openat resumed>) = 3 [pid 5854] write(1, "executing program\n", 18executing program [pid 5856] write(3, "1000", 4 [pid 5854] <... write resumed>) = 18 [pid 5856] <... write resumed>) = 4 [pid 5854] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5856] close(3executing program [pid 5854] <... openat resumed>) = 3 [pid 5856] <... close resumed>) = 0 [pid 5856] write(1, "executing program\n", 18) = 18 [pid 5854] dup(3 [pid 5856] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5854] <... dup resumed>) = 4 [pid 5856] dup(3 [pid 5854] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5856] <... dup resumed>) = 4 [pid 5856] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5847] kill(-5849, SIGKILL) = 0 [pid 5847] kill(5849, SIGKILL) = 0 [pid 5848] kill(-5851, SIGKILL) = 0 [pid 5848] kill(5851, SIGKILL) = 0 [pid 5850] kill(-5853, SIGKILL) = 0 [pid 5850] kill(5853, SIGKILL) = 0 [pid 5852] kill(-5854, SIGKILL [pid 5855] kill(-5856, SIGKILL [pid 5852] <... kill resumed>) = 0 [pid 5855] <... kill resumed>) = 0 [pid 5852] kill(5854, SIGKILL [pid 5855] kill(5856, SIGKILL [pid 5852] <... kill resumed>) = 0 [pid 5855] <... kill resumed>) = 0 [pid 5855] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5855] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5855] getdents64(3, 0x55556f8426f0 /* 2 entries */, 32768) = 48 [pid 5855] getdents64(3, [pid 5850] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5855] <... getdents64 resumed>0x55556f8426f0 /* 0 entries */, 32768) = 0 [pid 5855] close(3) = 0 [pid 5850] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5850] getdents64(3, 0x55556f8426f0 /* 2 entries */, 32768) = 48 [pid 5850] getdents64(3, 0x55556f8426f0 /* 0 entries */, 32768) = 0 [pid 5850] close(3) = 0 [pid 5852] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5852] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5852] getdents64(3, 0x55556f8426f0 /* 2 entries */, 32768) = 48 [pid 5852] getdents64(3, 0x55556f8426f0 /* 0 entries */, 32768) = 0 [pid 5852] close(3 [pid 5848] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5852] <... close resumed>) = 0 [pid 5848] <... openat resumed>) = 3 [pid 5848] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5848] getdents64(3, [pid 5847] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5848] <... getdents64 resumed>0x55556f8426f0 /* 2 entries */, 32768) = 48 [pid 5847] newfstatat(3, "", [pid 5848] getdents64(3, 0x55556f8426f0 /* 0 entries */, 32768) = 0 [pid 5847] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5848] close(3) = 0 [pid 5847] getdents64(3, 0x55556f8426f0 /* 2 entries */, 32768) = 48 [pid 5847] getdents64(3, 0x55556f8426f0 /* 0 entries */, 32768) = 0 [pid 5847] close(3) = 0 [pid 5851] <... fallocate resumed>) = ? [pid 5851] +++ killed by SIGKILL +++ [pid 5848] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5851, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=9652 /* 96.52 s */} --- [pid 5848] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5871 attached [pid 5871] set_robust_list(0x55556f841660, 24 [pid 5848] <... clone resumed>, child_tidptr=0x55556f841650) = 5871 [pid 5871] <... set_robust_list resumed>) = 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5871] setpgid(0, 0) = 0 [pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5871] write(3, "1000", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] write(1, "executing program\n", 18) = 18 [pid 5871] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5871] dup(3) = 4 [pid 5871] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5848] kill(-5871, SIGKILL) = 0 [pid 5848] kill(5871, SIGKILL) = 0 [pid 5848] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5848] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5848] getdents64(3, 0x55556f8426f0 /* 2 entries */, 32768) = 48 [pid 5848] getdents64(3, 0x55556f8426f0 /* 0 entries */, 32768) = 0 [pid 5848] close(3) = 0 [ 286.727396][ T30] INFO: task syz-executor925:5853 blocked for more than 143 seconds. [ 286.735759][ T30] Not tainted 6.14.0-rc2-next-20250212-syzkaller #0 [ 286.742908][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.759485][ T30] task:syz-executor925 state:D stack:26496 pid:5853 tgid:5853 ppid:5850 task_flags:0x400040 flags:0x00004006 [ 286.771644][ T30] Call Trace: [ 286.774961][ T30] [ 286.778003][ T30] __schedule+0x190e/0x4c90 [ 286.782630][ T30] ? __pfx___schedule+0x10/0x10 [ 286.787629][ T30] ? __pfx_lock_release+0x10/0x10 [ 286.792711][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.798843][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.805225][ T30] ? _raw_spin_lock_irq+0xdf/0x120 [ 286.810461][ T30] ? schedule+0x90/0x320 [ 286.814749][ T30] schedule+0x14b/0x320 [ 286.818998][ T30] schedule_preempt_disabled+0x13/0x30 [ 286.824506][ T30] rwsem_down_write_slowpath+0xeee/0x13b0 [ 286.830390][ T30] ? rwsem_down_write_slowpath+0xa09/0x13b0 [ 286.845517][ T30] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 286.851778][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 286.875502][ T30] ? __pfx_aa_file_perm+0x10/0x10 [ 286.880682][ T30] down_write+0x1d7/0x220 [ 286.885063][ T30] ? __pfx_down_write+0x10/0x10 [ 286.925511][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.931607][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.941144][ T30] blkdev_fallocate+0x20e/0x490 [ 286.947453][ T30] ? __pfx_blkdev_fallocate+0x10/0x10 [ 286.952914][ T30] vfs_fallocate+0x623/0x7a0 [ 286.959209][ T30] ? __pfx_vfs_fallocate+0x10/0x10 [ 286.964395][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.971465][ T30] __x64_sys_fallocate+0xbc/0x110 [ 286.976916][ T30] do_syscall_64+0xf3/0x230 [ 286.981490][ T30] ? clear_bhb_loop+0x35/0x90 [ 286.986778][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.994736][ T30] RIP: 0033:0x7f84a06bdb29 [ 287.000718][ T30] RSP: 002b:00007fffac5d9928 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 287.009615][ T30] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f84a06bdb29 [ 287.018050][ T30] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 287.026489][ T30] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 287.037036][ T30] R10: 0000002000000400 R11: 0000000000000246 R12: 0000000000000001 [ 287.047140][ T30] R13: 00007fffac5d9b48 R14: 00007fffac5d9950 R15: 00007fffac5d9940 [ 287.055220][ T30] [ 287.058463][ T30] INFO: task syz-executor925:5854 blocked for more than 143 seconds. [ 287.068725][ T30] Not tainted 6.14.0-rc2-next-20250212-syzkaller #0 [ 287.076003][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.084713][ T30] task:syz-executor925 state:D stack:26496 pid:5854 tgid:5854 ppid:5852 task_flags:0x400040 flags:0x00004006 [ 287.097168][ T30] Call Trace: [ 287.100495][ T30] [ 287.103463][ T30] __schedule+0x190e/0x4c90 [ 287.113350][ T30] ? __pfx___schedule+0x10/0x10 [ 287.118433][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.123560][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.129712][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.136236][ T30] ? _raw_spin_lock_irq+0xdf/0x120 [ 287.141414][ T30] ? schedule+0x90/0x320 [ 287.145805][ T30] schedule+0x14b/0x320 [ 287.150017][ T30] schedule_preempt_disabled+0x13/0x30 [ 287.155600][ T30] rwsem_down_write_slowpath+0xeee/0x13b0 [ 287.161387][ T30] ? rwsem_down_write_slowpath+0xa09/0x13b0 [ 287.169826][ T30] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 287.188705][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 287.193821][ T30] ? __pfx_aa_file_perm+0x10/0x10 [ 287.213962][ T30] down_write+0x1d7/0x220 [ 287.219284][ T30] ? __pfx_down_write+0x10/0x10 [ 287.224204][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.230824][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.237675][ T30] blkdev_fallocate+0x20e/0x490 [ 287.242611][ T30] ? __pfx_blkdev_fallocate+0x10/0x10 [ 287.248739][ T30] vfs_fallocate+0x623/0x7a0 [ 287.253426][ T30] ? __pfx_vfs_fallocate+0x10/0x10 [ 287.258743][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.265154][ T30] __x64_sys_fallocate+0xbc/0x110 [ 287.270338][ T30] do_syscall_64+0xf3/0x230 [ 287.274905][ T30] ? clear_bhb_loop+0x35/0x90 [ 287.279874][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.287551][ T30] RIP: 0033:0x7f84a06bdb29 [ 287.293784][ T30] RSP: 002b:00007fffac5d9928 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 287.304231][ T30] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f84a06bdb29 [ 287.312782][ T30] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 287.321244][ T30] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 287.330146][ T30] R10: 0000002000000400 R11: 0000000000000246 R12: 0000000000000001 [ 287.338658][ T30] R13: 00007fffac5d9b48 R14: 00007fffac5d9950 R15: 00007fffac5d9940 [ 287.347170][ T30] [ 287.350670][ T30] INFO: task syz-executor925:5856 blocked for more than 143 seconds. [ 287.358849][ T30] Not tainted 6.14.0-rc2-next-20250212-syzkaller #0 [ 287.375852][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.384595][ T30] task:syz-executor925 state:D stack:26480 pid:5856 tgid:5856 ppid:5855 task_flags:0x400040 flags:0x00004006 [ 287.400243][ T30] Call Trace: [ 287.403578][ T30] [ 287.406712][ T30] __schedule+0x190e/0x4c90 [ 287.411303][ T30] ? __pfx___schedule+0x10/0x10 [ 287.417015][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.423775][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.431899][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.438438][ T30] ? _raw_spin_lock_irq+0xdf/0x120 [ 287.443759][ T30] ? schedule+0x90/0x320 [ 287.448158][ T30] schedule+0x14b/0x320 [ 287.452378][ T30] schedule_preempt_disabled+0x13/0x30 [ 287.458271][ T30] rwsem_down_write_slowpath+0xeee/0x13b0 [ 287.464058][ T30] ? rwsem_down_write_slowpath+0xa09/0x13b0 [ 287.470234][ T30] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 287.476845][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 287.481935][ T30] ? __pfx_aa_file_perm+0x10/0x10 [ 287.487698][ T30] down_write+0x1d7/0x220 [ 287.492101][ T30] ? __pfx_down_write+0x10/0x10 [ 287.497597][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.503668][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.510844][ T30] blkdev_fallocate+0x20e/0x490 [ 287.516141][ T30] ? __pfx_blkdev_fallocate+0x10/0x10 [ 287.521584][ T30] vfs_fallocate+0x623/0x7a0 [ 287.526835][ T30] ? __pfx_vfs_fallocate+0x10/0x10 [ 287.532007][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.539032][ T30] __x64_sys_fallocate+0xbc/0x110 [ 287.546216][ T30] do_syscall_64+0xf3/0x230 [ 287.552524][ T30] ? clear_bhb_loop+0x35/0x90 [ 287.557467][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.563603][ T30] RIP: 0033:0x7f84a06bdb29 [ 287.568584][ T30] RSP: 002b:00007fffac5d9928 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 287.577476][ T30] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f84a06bdb29 [ 287.585941][ T30] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 287.596011][ T30] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 287.606072][ T30] R10: 0000002000000400 R11: 0000000000000246 R12: 0000000000000001 [ 287.616268][ T30] R13: 00007fffac5d9b48 R14: 00007fffac5d9950 R15: 00007fffac5d9940 [ 287.626344][ T30] [ 287.631531][ T30] [ 287.631531][ T30] Showing all locks held in the system: [ 287.641667][ T30] 2 locks held by ksoftirqd/1/22: [ 287.665577][ T30] #0: ffff8880b873e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 287.675779][ T30] #1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 [ 287.687437][ T30] 1 lock held by khungtaskd/30: [ 287.692324][ T30] #0: ffffffff8e93ad20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 287.702543][ T30] 2 locks held by syslogd/5189: [ 287.707478][ T30] #0: ffff8880b873e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 287.717983][ T30] #1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 [ 287.729991][ T30] 2 locks held by getty/5589: [ 287.734719][ T30] #0: ffff88814d6b40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.745327][ T30] #1: ffffc9000331b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 [ 287.756027][ T30] 1 lock held by syz-executor925/5849: [ 287.761537][ T30] #0: ffff888148c5d9c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x20e/0x490 [ 287.772947][ T30] 1 lock held by syz-executor925/5853: [ 287.778601][ T30] #0: ffff888148c5d9c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x20e/0x490 [ 287.789501][ T30] 1 lock held by syz-executor925/5854: [ 287.794999][ T30] #0: ffff888148c5d9c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x20e/0x490 [ 287.805889][ T30] 1 lock held by syz-executor925/5856: [ 287.811395][ T30] #0: ffff888148c5d9c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x20e/0x490 [ 287.824071][ T30] 1 lock held by syz-executor925/5871: [ 287.830020][ T30] #0: ffff888148c5d9c0 (mapping.invalidate_lock#2){++++}-{4:4}, at: blkdev_fallocate+0x20e/0x490 [ 287.841201][ T30] [ 287.843566][ T30] ============================================= [ 287.843566][ T30] [ 287.854319][ T30] NMI backtrace for cpu 0 [ 287.854345][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc2-next-20250212-syzkaller #0 [ 287.854367][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 287.854379][ T30] Call Trace: [ 287.854388][ T30] [ 287.854397][ T30] dump_stack_lvl+0x241/0x360 [ 287.854430][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.854454][ T30] ? __pfx__printk+0x10/0x10 [ 287.854496][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.854548][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.854579][ T30] ? _printk+0xd5/0x120 [ 287.854598][ T30] ? __pfx__printk+0x10/0x10 [ 287.854619][ T30] ? __wake_up_klogd+0xcc/0x110 [ 287.854647][ T30] ? __pfx__printk+0x10/0x10 [ 287.854670][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 287.854701][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.854730][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.854771][ T30] watchdog+0x1058/0x10a0 [ 287.854804][ T30] ? watchdog+0x1ea/0x10a0 [ 287.854842][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.854872][ T30] kthread+0x7a9/0x920 [ 287.854901][ T30] ? __pfx_kthread+0x10/0x10 [ 287.854936][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.854966][ T30] ? __pfx_kthread+0x10/0x10 [ 287.854993][ T30] ? __pfx_kthread+0x10/0x10 [ 287.855029][ T30] ? __pfx_kthread+0x10/0x10 [ 287.855056][ T30] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.855077][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 287.855101][ T30] ? __pfx_kthread+0x10/0x10 [ 287.855134][ T30] ret_from_fork+0x4b/0x80 [ 287.855161][ T30] ? __pfx_kthread+0x10/0x10 [ 287.855193][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.855243][ T30] [ 287.855252][ T30] Sending NMI from CPU 0 to CPUs 1: [ 288.030337][ C1] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 [ 288.031395][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 288.046436][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc2-next-20250212-syzkaller #0 [ 288.056445][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 288.066517][ T30] Call Trace: [ 288.069819][ T30] [ 288.072763][ T30] dump_stack_lvl+0x241/0x360 [ 288.077466][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 288.082689][ T30] ? __pfx__printk+0x10/0x10 [ 288.087291][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 288.093305][ T30] ? vscnprintf+0x5d/0x90 [ 288.097668][ T30] panic+0x349/0x880 [ 288.101591][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 288.107767][ T30] ? __pfx_panic+0x10/0x10 [ 288.112232][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 288.117626][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 288.123803][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 288.129989][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 288.136177][ T30] watchdog+0x1097/0x10a0 [ 288.140531][ T30] ? watchdog+0x1ea/0x10a0 [ 288.144974][ T30] ? __pfx_watchdog+0x10/0x10 [ 288.149673][ T30] kthread+0x7a9/0x920 [ 288.153762][ T30] ? __pfx_kthread+0x10/0x10 [ 288.158380][ T30] ? __pfx_watchdog+0x10/0x10 [ 288.163080][ T30] ? __pfx_kthread+0x10/0x10 [ 288.167687][ T30] ? __pfx_kthread+0x10/0x10 [ 288.172304][ T30] ? __pfx_kthread+0x10/0x10 [ 288.176915][ T30] ? _raw_spin_unlock_irq+0x23/0x50 [ 288.182135][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 288.187352][ T30] ? __pfx_kthread+0x10/0x10 [ 288.191965][ T30] ret_from_fork+0x4b/0x80 [ 288.196416][ T30] ? __pfx_kthread+0x10/0x10 [ 288.201047][ T30] ret_from_fork_asm+0x1a/0x30 [ 288.205853][ T30] [ 288.209298][ T30] Kernel Offset: disabled [ 288.213638][ T30] Rebooting in 86400 seconds..