41600 2021-12-21 04:51:33 +0300 pstree is killed by signal if stdout is redirected to a file 2021-12-21 04:59:08 +0300 1 1 4 Development Sisyphus psmisc unstable aarch64 Linux CLOSED DUPLICATE 40857 https://bugzilla.altlinux.org/show_bug.cgi?id=40857 P5 normal --- 1 vseleznv vt ldv vt qa-sisyphus oldest_to_newest 206243 0 vseleznv 2021-12-21 04:51:33 +0300 On aarch64: $ uname -m aarch64 $ pstree -p > pstree File size limit exceeded $ du pstree 0 pstree $ pstree -p |tee > pstree $ du pstree 16K pstree Lets trace it: $ strace -o pstree.trace pstree -p > pstree File size limit exceeded $ tail pstree.trace newfstatat(AT_FDCWD, "/proc/4187067/ns/user", 0xffffc7ed6ab0, 0) = -1 EACCES (Permission denied) newfstatat(AT_FDCWD, "/proc/4187067/ns/uts", 0xffffc7ed6ab0, 0) = -1 EACCES (Permission denied) close(4) = 0 getdents64(3, 0xaaaabee05120 /* 0 entries */, 32768) = 0 close(3) = 0 prlimit64(0, RLIMIT_NOFILE, {rlim_cur=0, rlim_max=0}, NULL) = 0 fstat(1, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 write(1, "systemd(1)-+-agetty(4099)\n "..., 4096) = -1 EFBIG (File too large) --- SIGXFSZ {si_signo=SIGXFSZ, si_code=SI_USER, si_pid=648134, si_uid=1720} --- +++ killed by SIGXFSZ +++ $ Killed by SIGXFSZ On x86_64: $ uname -m x86_64 $ pstre pstree pstree.x11 $ pstree -p > pstree $ du pstree 104K pstree $ It works well. 206244 1 vt 2021-12-21 04:54:54 +0300 Do you forgot to post pstree version on aarch64? 206245 2 vt 2021-12-21 04:59:08 +0300 Already fixed in #40857. *** This bug has been marked as a duplicate of bug 40857 ***