./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4252417331 <...> Warning: Permanently added '10.128.0.196' (ED25519) to the list of known hosts. execve("./syz-executor4252417331", ["./syz-executor4252417331"], 0x7ffd1d517a00 /* 10 vars */) = 0 brk(NULL) = 0x55558d3d3000 brk(0x55558d3d3d00) = 0x55558d3d3d00 arch_prctl(ARCH_SET_FS, 0x55558d3d3380) = 0 set_tid_address(0x55558d3d3650) = 5219 set_robust_list(0x55558d3d3660, 24) = 0 rseq(0x55558d3d3ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4252417331", 4096) = 28 getrandom("\xba\x93\x19\xb4\x7e\xa3\xea\xef", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558d3d3d00 brk(0x55558d3f4d00) = 0x55558d3f4d00 brk(0x55558d3f5000) = 0x55558d3f5000 mprotect(0x7f03311d6000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5220 attached [pid 5220] set_robust_list(0x55558d3d3660, 24 [pid 5219] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5220 [pid 5220] <... set_robust_list resumed>) = 0 [pid 5220] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5219] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5221 attached [pid 5221] set_robust_list(0x55558d3d3660, 24./strace-static-x86_64: Process 5222 attached [pid 5219] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5221 [pid 5222] set_robust_list(0x55558d3d3660, 24 [pid 5221] <... set_robust_list resumed>) = 0 [pid 5220] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5222 [pid 5219] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5222] <... set_robust_list resumed>) = 0 [pid 5221] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5223 attached ) = 0 [pid 5222] setpgid(0, 0 [pid 5223] set_robust_list(0x55558d3d3660, 24) = 0 [pid 5222] <... setpgid resumed>) = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5224 attached [pid 5219] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5224 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5221] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5223 [pid 5224] set_robust_list(0x55558d3d3660, 24 [pid 5219] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5223] <... prctl resumed>) = 0 [pid 5224] <... set_robust_list resumed>) = 0 [pid 5223] setpgid(0, 0 [pid 5222] <... openat resumed>) = 3 [pid 5223] <... setpgid resumed>) = 0 [pid 5224] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5222] write(3, "1000", 4) = 4 [pid 5222] close(3 [pid 5223] <... openat resumed>) = 3 [pid 5222] <... close resumed>) = 0 [pid 5222] write(1, "executing program\n", 18executing program ./strace-static-x86_64: Process 5226 attached ./strace-static-x86_64: Process 5225 attached [pid 5223] write(3, "1000", 4 [pid 5222] <... write resumed>) = 18 [pid 5219] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5225 [pid 5226] set_robust_list(0x55558d3d3660, 24 [pid 5225] set_robust_list(0x55558d3d3660, 24 [pid 5224] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5226 [pid 5223] <... write resumed>) = 4 [pid 5219] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5226] <... set_robust_list resumed>) = 0 [pid 5225] <... set_robust_list resumed>) = 0 [pid 5223] close(3 [pid 5222] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5225] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5223] <... close resumed>) = 0 ./strace-static-x86_64: Process 5227 attached [pid 5226] <... prctl resumed>) = 0 [pid 5222] <... openat resumed>) = 3 executing program [pid 5227] set_robust_list(0x55558d3d3660, 24 [pid 5226] setpgid(0, 0 [pid 5223] write(1, "executing program\n", 18 [pid 5219] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5227 [pid 5227] <... set_robust_list resumed>) = 0 [pid 5226] <... setpgid resumed>) = 0 [pid 5223] <... write resumed>) = 18 ./strace-static-x86_64: Process 5228 attached [pid 5227] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5222] dup(3 [pid 5225] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5228 [pid 5223] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5228] set_robust_list(0x55558d3d3660, 24 [pid 5223] <... openat resumed>) = 3 [pid 5222] <... dup resumed>) = 4 [pid 5228] <... set_robust_list resumed>) = 0 [pid 5226] <... openat resumed>) = 3 [pid 5222] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5226] write(3, "1000", 4 [pid 5223] dup(3) = 4 [pid 5223] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496./strace-static-x86_64: Process 5229 attached [pid 5228] <... prctl resumed>) = 0 [pid 5226] <... write resumed>) = 4 [pid 5229] set_robust_list(0x55558d3d3660, 24 [pid 5228] setpgid(0, 0 [pid 5229] <... set_robust_list resumed>) = 0 [pid 5228] <... setpgid resumed>) = 0 [pid 5226] close(3 executing program [pid 5229] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5226] <... close resumed>) = 0 [pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5227] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5229 [pid 5226] write(1, "executing program\n", 18 [pid 5228] <... openat resumed>) = 3 [pid 5226] <... write resumed>) = 18 [pid 5229] <... prctl resumed>) = 0 [pid 5226] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5226] dup(3 [pid 5229] setpgid(0, 0 [pid 5228] write(3, "1000", 4 [pid 5229] <... setpgid resumed>) = 0 [pid 5226] <... dup resumed>) = 4 [pid 5228] <... write resumed>) = 4 [pid 5226] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5228] close(3 [pid 5229] <... openat resumed>) = 3 [pid 5228] <... close resumed>) = 0 executing program [pid 5228] write(1, "executing program\n", 18) = 18 [pid 5229] write(3, "1000", 4 [pid 5228] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5229] <... write resumed>) = 4 [pid 5228] <... openat resumed>) = 3 [pid 5229] close(3) = 0 [pid 5228] dup(3 [pid 5229] write(1, "executing program\n", 18executing program ) = 18 [pid 5228] <... dup resumed>) = 4 [pid 5229] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC [pid 5228] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5229] <... openat resumed>) = 3 [pid 5229] dup(3) = 4 [pid 5229] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5220] kill(-5222, SIGKILL) = 0 [pid 5220] kill(5222, SIGKILL) = 0 [pid 5221] kill(-5223, SIGKILL) = 0 [pid 5221] kill(5223, SIGKILL) = 0 [pid 5227] kill(-5229, SIGKILL) = 0 [pid 5224] kill(-5226, SIGKILL [pid 5227] kill(5229, SIGKILL [pid 5225] kill(-5228, SIGKILL [pid 5224] <... kill resumed>) = 0 [pid 5227] <... kill resumed>) = 0 [pid 5225] <... kill resumed>) = 0 [pid 5224] kill(5226, SIGKILL [pid 5225] kill(5228, SIGKILL [pid 5224] <... kill resumed>) = 0 [pid 5225] <... kill resumed>) = 0 [pid 5221] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5220] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5225] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5224] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5220] <... openat resumed>) = 3 [pid 5221] <... openat resumed>) = 3 [pid 5225] <... openat resumed>) = 3 [pid 5225] newfstatat(3, "", [pid 5220] newfstatat(3, "", [pid 5224] newfstatat(3, "", [pid 5221] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5220] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5225] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5224] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5224] getdents64(3, [pid 5227] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5225] getdents64(3, [pid 5221] getdents64(3, [pid 5220] getdents64(3, [pid 5227] <... openat resumed>) = 3 [pid 5225] <... getdents64 resumed>0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5224] <... getdents64 resumed>0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5221] <... getdents64 resumed>0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5220] <... getdents64 resumed>0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5227] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5227] getdents64(3, 0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5225] getdents64(3, [pid 5224] getdents64(3, [pid 5221] getdents64(3, [pid 5220] getdents64(3, [pid 5227] getdents64(3, 0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5227] close(3) = 0 [pid 5225] <... getdents64 resumed>0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5221] <... getdents64 resumed>0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5220] <... getdents64 resumed>0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5225] close(3 [pid 5224] <... getdents64 resumed>0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5221] close(3 [pid 5220] close(3 [pid 5225] <... close resumed>) = 0 [pid 5224] close(3 [pid 5221] <... close resumed>) = 0 [pid 5224] <... close resumed>) = 0 [pid 5220] <... close resumed>) = 0 [ 76.670011][ T938] cfg80211: failed to load regulatory.db [pid 5222] <... fallocate resumed>) = ? [pid 5222] +++ killed by SIGKILL +++ [pid 5220] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5222, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=2681 /* 26.81 s */} --- [pid 5220] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5245 attached , child_tidptr=0x55558d3d3650) = 5245 [pid 5245] set_robust_list(0x55558d3d3660, 24) = 0 [pid 5245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5245] setpgid(0, 0) = 0 [pid 5245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5245] write(3, "1000", 4) = 4 [pid 5245] close(3) = 0 executing program [pid 5245] write(1, "executing program\n", 18) = 18 [pid 5245] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5245] dup(3) = 4 [pid 5245] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5220] kill(-5245, SIGKILL) = 0 [pid 5220] kill(5245, SIGKILL) = 0 [pid 5220] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5220] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5220] getdents64(3, 0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5220] getdents64(3, 0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5220] close(3) = 0 [pid 5223] <... fallocate resumed>) = ? [pid 5223] +++ killed by SIGKILL +++ [pid 5221] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5223, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=2623 /* 26.23 s */} --- [pid 5221] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5248 attached [pid 5248] set_robust_list(0x55558d3d3660, 24 [pid 5221] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5248 [pid 5248] <... set_robust_list resumed>) = 0 [pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5248] setpgid(0, 0) = 0 [pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5248] write(3, "1000", 4) = 4 [pid 5248] close(3) = 0 [pid 5248] write(1, "executing program\n", 18) = 18 [pid 5248] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5248] dup(3) = 4 [pid 5248] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5221] kill(-5248, SIGKILL) = 0 [pid 5221] kill(5248, SIGKILL) = 0 [pid 5221] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5221] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5221] getdents64(3, 0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5221] getdents64(3, 0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5221] close(3) = 0 [pid 5226] <... fallocate resumed>) = ? [pid 5226] +++ killed by SIGKILL +++ [pid 5224] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5226, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=2669 /* 26.69 s */} --- [pid 5224] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5249 attached [pid 5249] set_robust_list(0x55558d3d3660, 24) = 0 [pid 5224] <... clone resumed>, child_tidptr=0x55558d3d3650) = 5249 [pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5249] setpgid(0, 0) = 0 [pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5249] write(3, "1000", 4) = 4 [pid 5249] close(3) = 0 executing program [pid 5249] write(1, "executing program\n", 18) = 18 [pid 5249] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5249] dup(3) = 4 [pid 5249] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5224] kill(-5249, SIGKILL) = 0 [pid 5224] kill(5249, SIGKILL) = 0 [pid 5224] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5224] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5224] getdents64(3, 0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5224] getdents64(3, 0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5224] close(3) = 0 [pid 5228] <... fallocate resumed>) = ? [pid 5228] +++ killed by SIGKILL +++ [pid 5225] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5228, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=2692 /* 26.92 s */} --- [pid 5225] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5256 attached , child_tidptr=0x55558d3d3650) = 5256 [pid 5256] set_robust_list(0x55558d3d3660, 24) = 0 [pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5256] setpgid(0, 0) = 0 [pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program ) = 3 [pid 5256] write(3, "1000", 4) = 4 [pid 5256] close(3) = 0 [pid 5256] write(1, "executing program\n", 18) = 18 [pid 5256] openat(AT_FDCWD, "/dev/nullb0", O_RDWR|O_TRUNC|O_APPEND|O_NONBLOCK|__O_SYNC|O_NOFOLLOW|O_NOATIME|FASYNC) = 3 [pid 5256] dup(3) = 4 [pid 5256] fallocate(4, FALLOC_FL_ZERO_RANGE, 0, 137438954496 [pid 5225] kill(-5256, SIGKILL) = 0 [pid 5225] kill(5256, SIGKILL) = 0 [pid 5225] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5225] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5225] getdents64(3, 0x55558d3d46f0 /* 2 entries */, 32768) = 48 [pid 5225] getdents64(3, 0x55558d3d46f0 /* 0 entries */, 32768) = 0 [pid 5225] close(3) = 0 [ 286.554146][ T30] INFO: task syz-executor425:5245 blocked for more than 143 seconds. [ 286.567593][ T30] Not tainted 6.12.0-rc2-syzkaller-00074-gd3d1556696c1 #0 [ 286.580417][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.602930][ T30] task:syz-executor425 state:D stack:26560 pid:5245 tgid:5245 ppid:5220 flags:0x00004006 [ 286.625374][ T30] Call Trace: [ 286.629326][ T30] [ 286.632285][ T30] __schedule+0x1843/0x4ae0 [ 286.637148][ T30] ? __pfx___schedule+0x10/0x10 [ 286.642037][ T30] ? __pfx_lock_release+0x10/0x10 [ 286.659634][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.666450][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.673508][ T30] ? _raw_spin_lock_irq+0xdf/0x120 [ 286.679337][ T30] ? schedule+0x90/0x320 [ 286.684384][ T30] schedule+0x14b/0x320 [ 286.689223][ T30] schedule_preempt_disabled+0x13/0x30 [ 286.696550][ T30] rwsem_down_write_slowpath+0xeee/0x13b0 [ 286.702317][ T30] ? rwsem_down_write_slowpath+0xa09/0x13b0 [ 286.720310][ T30] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 286.727207][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 286.732991][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.739669][ T30] down_write+0x1d7/0x220 [ 286.744693][ T30] ? __pfx_down_write+0x10/0x10 [ 286.750153][ T30] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.756123][ T30] blkdev_fallocate+0x20e/0x490 [ 286.761755][ T30] vfs_fallocate+0x569/0x6e0 [ 286.771975][ T30] __x64_sys_fallocate+0xbd/0x110 [ 286.783674][ T30] do_syscall_64+0xf3/0x230 [ 286.788871][ T30] ? clear_bhb_loop+0x35/0x90 [ 286.794333][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.800963][ T30] RIP: 0033:0x7f0331163b29 [ 286.805493][ T30] RSP: 002b:00007ffe1621d0b8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 286.815078][ T30] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0331163b29 [ 286.823782][ T30] RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004 [ 286.832423][ T30] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 286.841042][ T30] R10: 0000002000000400 R11: 0000000000000246 R12: 000000000000d12d [ 286.861732][ T30] R13: 00007ffe1621d0cc R14: 00007ffe1621d0e0 R15: 00007ffe1621d0d0 [ 286.870498][ T30] [ 286.874214][ T30] [ 286.874214][ T30] Showing all locks held in the system: [ 286.882560][ T30] 1 lock held by khungtaskd/30: [ 286.890419][ T30] #0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 286.900983][ T30] 3 locks held by kworker/1:1H/45: [ 286.906956][ T30] 1 lock held by klogd/4664: [ 286.923786][ T30] 2 locks held by getty/4982: [ 286.928507][ T30] #0: ffff88802ec060a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.938520][ T30] #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 [ 286.960291][ T30] 1 lock held by syz-executor425/5229: [ 286.970069][ T30] 1 lock held by syz-executor425/5245: [ 286.977608][ T30] #0: ffff888023547c40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x20e/0x490 [ 286.988505][ T30] 1 lock held by syz-executor425/5248: [ 286.994961][ T30] #0: ffff888023547c40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x20e/0x490 [ 287.009885][ T30] 1 lock held by syz-executor425/5249: [ 287.020683][ T30] #0: ffff888023547c40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x20e/0x490 [ 287.053845][ T30] 1 lock held by syz-executor425/5256: [ 287.060173][ T30] #0: ffff888023547c40 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x20e/0x490 [ 287.071757][ T30] [ 287.091581][ T30] ============================================= [ 287.091581][ T30] [ 287.103301][ T30] NMI backtrace for cpu 0 [ 287.107682][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller-00074-gd3d1556696c1 #0 [ 287.118225][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 287.128312][ T30] Call Trace: [ 287.131692][ T30] [ 287.134646][ T30] dump_stack_lvl+0x241/0x360 [ 287.139347][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.144564][ T30] ? __pfx__printk+0x10/0x10 [ 287.149281][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.154301][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.159777][ T30] ? _printk+0xd5/0x120 [ 287.163956][ T30] ? __pfx__printk+0x10/0x10 [ 287.168565][ T30] ? __wake_up_klogd+0xcc/0x110 [ 287.173441][ T30] ? __pfx__printk+0x10/0x10 [ 287.178057][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 287.183100][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.189109][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.195121][ T30] watchdog+0xff4/0x1040 [ 287.199393][ T30] ? watchdog+0x1ea/0x1040 [ 287.203839][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.208540][ T30] kthread+0x2f0/0x390 [ 287.212629][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.217327][ T30] ? __pfx_kthread+0x10/0x10 [ 287.221939][ T30] ret_from_fork+0x4b/0x80 [ 287.226378][ T30] ? __pfx_kthread+0x10/0x10 [ 287.230984][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.235784][ T30] [ 287.239551][ T30] Sending NMI from CPU 0 to CPUs 1: [ 287.245522][ C1] NMI backtrace for cpu 1 [ 287.245535][ C1] CPU: 1 UID: 0 PID: 4664 Comm: klogd Not tainted 6.12.0-rc2-syzkaller-00074-gd3d1556696c1 #0 [ 287.245554][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 287.245564][ C1] RIP: 0010:check_preemption_disabled+0x42/0x120 [ 287.245649][ C1] Code: 08 65 8b 1d 5c d2 46 74 65 8b 05 51 d2 46 74 a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 <89> d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24 [ 287.245665][ C1] RSP: 0018:ffffc9000307f1e8 EFLAGS: 00000046 [ 287.245681][ C1] RAX: edce10595e953500 RBX: 0000000000000001 RCX: 000000000000000a [ 287.245691][ C1] RDX: 0000000000000001 RSI: ffffffff8c149860 RDI: ffffffff8c602720 [ 287.245702][ C1] RBP: 0000000000044a40 R08: ffffffff901bc1ef R09: 0000000000100000 [ 287.245714][ C1] R10: dffffc0000000000 R11: fffffbfff203783e R12: 0000000000000000 [ 287.245725][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001 [ 287.245735][ C1] FS: 00007ff310221380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 287.245749][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.245760][ C1] CR2: 000055baaf281680 CR3: 0000000032668000 CR4: 00000000003526f0 [ 287.245773][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.245783][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.245793][ C1] Call Trace: [ 287.245799][ C1] [ 287.245805][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.245825][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.245850][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.245868][ C1] ? nmi_handle+0x2a/0x5a0 [ 287.245891][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.245911][ C1] ? nmi_handle+0x14f/0x5a0 [ 287.245927][ C1] ? nmi_handle+0x2a/0x5a0 [ 287.245943][ C1] ? check_preemption_disabled+0x42/0x120 [ 287.245959][ C1] ? default_do_nmi+0x63/0x160 [ 287.245979][ C1] ? exc_nmi+0x123/0x1f0 [ 287.245997][ C1] ? end_repeat_nmi+0xf/0x53 [ 287.246021][ C1] ? check_preemption_disabled+0x42/0x120 [ 287.246038][ C1] ? check_preemption_disabled+0x42/0x120 [ 287.246055][ C1] ? check_preemption_disabled+0x42/0x120 [ 287.246072][ C1] [ 287.246077][ C1] [ 287.246084][ C1] __mod_zone_page_state+0xda/0x150 [ 287.246110][ C1] __free_one_page+0x1ab/0x870 [ 287.246134][ C1] ? __pfx___free_one_page+0x10/0x10 [ 287.246158][ C1] free_pcppages_bulk+0x3d3/0x5e0 [ 287.246182][ C1] free_unref_page_commit+0x582/0x1140 [ 287.246206][ C1] ? __pfx_free_unref_page_commit+0x10/0x10 [ 287.246225][ C1] ? page_ext_get+0x20/0x2a0 [ 287.246246][ C1] ? page_ext_get+0x1d6/0x2a0 [ 287.246270][ C1] free_unref_page+0x693/0xf00 [ 287.246293][ C1] __slab_free+0x31b/0x3d0 [ 287.246315][ C1] ? __phys_addr+0xba/0x170 [ 287.246331][ C1] qlist_free_all+0x9a/0x140 [ 287.246353][ C1] kasan_quarantine_reduce+0x14f/0x170 [ 287.246374][ C1] __kasan_slab_alloc+0x23/0x80 [ 287.246397][ C1] __kmalloc_node_track_caller_noprof+0x1cd/0x440 [ 287.246414][ C1] ? __alloc_skb+0x1f3/0x440 [ 287.246456][ C1] ? __alloc_skb+0x1f3/0x440 [ 287.246471][ C1] kmalloc_reserve+0x111/0x2a0 [ 287.246487][ C1] __alloc_skb+0x1f3/0x440 [ 287.246502][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.246525][ C1] ? __pfx___alloc_skb+0x10/0x10 [ 287.246545][ C1] alloc_skb_with_frags+0xc3/0x820 [ 287.246583][ C1] sock_alloc_send_pskb+0x91a/0xa60 [ 287.246610][ C1] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 287.246632][ C1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 287.246655][ C1] unix_dgram_sendmsg+0x6d3/0x1f80 [ 287.246699][ C1] ? __pfx_smack_socket_sendmsg+0x10/0x10 [ 287.246752][ C1] ? tomoyo_socket_sendmsg_permission+0x288/0x420 [ 287.246805][ C1] ? __pfx_unix_dgram_sendmsg+0x10/0x10 [ 287.246827][ C1] ? __pfx_unix_dgram_sendmsg+0x10/0x10 [ 287.246841][ C1] __sock_sendmsg+0x221/0x270 [ 287.246893][ C1] __sys_sendto+0x39b/0x4f0 [ 287.246911][ C1] ? __pfx___sys_sendto+0x10/0x10 [ 287.246937][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.246961][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 287.246986][ C1] __x64_sys_sendto+0xde/0x100 [ 287.247003][ C1] do_syscall_64+0xf3/0x230 [ 287.247023][ C1] ? clear_bhb_loop+0x35/0x90 [ 287.247038][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.247061][ C1] RIP: 0033:0x7ff3103839b5 [ 287.247074][ C1] Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83 [ 287.247086][ C1] RSP: 002b:00007ffe33d78948 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 287.247102][ C1] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff3103839b5 [ 287.247113][ C1] RDX: 000000000000003d RSI: 0000557584427d80 RDI: 0000000000000003 [ 287.247123][ C1] RBP: 0000557584423910 R08: 0000000000000000 R09: 0000000000000000 [ 287.247133][ C1] R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013 [ 287.247143][ C1] R13: 00007ff310511212 R14: 00007ffe33d78a48 R15: 0000000000000000 [ 287.247160][ C1] [ 287.247167][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.649 msecs [ 287.360188][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 287.360205][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-syzkaller-00074-gd3d1556696c1 #0 [ 287.360226][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 287.360236][ T30] Call Trace: [ 287.360243][ T30] [ 287.360250][ T30] dump_stack_lvl+0x241/0x360 [ 287.360280][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.360298][ T30] ? __pfx__printk+0x10/0x10 [ 287.360320][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.360349][ T30] ? vscnprintf+0x5d/0x90 [ 287.360370][ T30] panic+0x349/0x880 [ 287.360394][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.360415][ T30] ? __pfx_panic+0x10/0x10 [ 287.360436][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 287.360455][ T30] ? __irq_work_queue_local+0x137/0x410 [ 287.360478][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 287.360495][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.360514][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 287.360536][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 287.360558][ T30] watchdog+0x1033/0x1040 [ 287.360581][ T30] ? watchdog+0x1ea/0x1040 [ 287.360606][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.360626][ T30] kthread+0x2f0/0x390 [ 287.360642][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.360661][ T30] ? __pfx_kthread+0x10/0x10 [ 287.360679][ T30] ret_from_fork+0x4b/0x80 [ 287.360700][ T30] ? __pfx_kthread+0x10/0x10 [ 287.360716][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.360748][ T30] [ 287.907445][ T30] Kernel Offset: disabled [ 287.911755][ T30] Rebooting in 86400 seconds..