`snap` freezes on any command

Here is the strace when I run snap find chrome.
It seems that snapd was stuck in a deadlock.

execve("/usr/bin/snap", ["snap", "find", "chrome"], 0x7fff609adf10 /* 22 vars */) = 0
brk(NULL)                               = 0x559b9196c000
arch_prctl(0x3001 /* ARCH_??? */, 0x7fffe02a9d80) = -1 EINVAL (Invalid argument)
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=23990, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 23990, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f87963eb000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\200\0\0\0\0\0\0"..., 832) = 832
pread64(3, "\4\0\0\0 \0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0"..., 48, 792) = 48
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0\270<\302\35\177\205gAq\255\235\6`\247\325r"..., 68, 840) = 68
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=150720, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87963e9000
mmap(NULL, 136240, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f87963c7000
mmap(0x7f87963ce000, 65536, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f87963ce000
mmap(0x7f87963de000, 20480, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f87963de000
mmap(0x7f87963e3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b000) = 0x7f87963e3000
mmap(0x7f87963e5000, 13360, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f87963e5000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\206\2\0\0\0\0\0"..., 832) = 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
pread64(3, "\4\0\0\0 \0\0\0\5\0\0\0GNU\0\2\0\0\300\4\0\0\0\3\0\0\0\0\0\0\0"..., 48, 848) = 48
pread64(3, "\4\0\0\0\24\0\0\0\3\0\0\0GNU\0+H)\227\201T\214\233\304R\352\306\3379\220%"..., 68, 896) = 68
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=1983576, ...}, AT_EMPTY_PATH) = 0
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"..., 784, 64) = 784
mmap(NULL, 2012056, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f87961db000
mmap(0x7f8796201000, 1486848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7f8796201000
mmap(0x7f879636c000, 311296, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x191000) = 0x7f879636c000
mmap(0x7f87963b8000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1dc000) = 0x7f87963b8000
mmap(0x7f87963be000, 33688, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f87963be000
close(3)                                = 0
mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87961d8000
arch_prctl(ARCH_SET_FS, 0x7f87961d8740) = 0
mprotect(0x7f87963b8000, 12288, PROT_READ) = 0
mprotect(0x7f87963e3000, 4096, PROT_READ) = 0
mprotect(0x559b9046f000, 5627904, PROT_READ) = 0
mprotect(0x7f8796423000, 8192, PROT_READ) = 0
munmap(0x7f87963eb000, 23990)           = 0
set_tid_address(0x7f87961d8a10)         = 1030
set_robust_list(0x7f87961d8a20, 24)     = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x7f87963ceb90, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x7f87963cec30, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
brk(NULL)                               = 0x559b9196c000
brk(0x559b9198d000)                     = 0x559b9198d000
sched_getaffinity(0, 8192, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]) = 32
openat(AT_FDCWD, "/sys/kernel/mm/transparent_hugepage/hpage_pmd_size", O_RDONLY) = 3
read(3, "2097152\n", 20)                = 8
close(3)                                = 0
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8796198000
mmap(NULL, 131072, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8796178000
mmap(NULL, 1048576, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8796078000
mmap(NULL, 8388608, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8795878000
mmap(NULL, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8791878000
mmap(NULL, 536870912, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8771878000
mmap(0xc000000000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xc000000000
mmap(0xc000000000, 67108864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xc000000000
mmap(NULL, 33554432, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876f878000
mmap(NULL, 2165776, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876f667000
mmap(0x7f8796178000, 131072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f8796178000
mmap(0x7f87960f8000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f87960f8000
mmap(0x7f8795c7e000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f8795c7e000
mmap(0x7f87938a8000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f87938a8000
mmap(0x7f87819f8000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f87819f8000
mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876f567000
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876f557000
mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876f547000
rt_sigprocmask(SIG_SETMASK, NULL, [], 8) = 0
sigaltstack(NULL, {ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=0}) = 0
sigaltstack({ss_sp=0xc000002000, ss_flags=0, ss_size=32768}, NULL) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
gettid()                                = 1030
rt_sigaction(SIGHUP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGHUP, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGINT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGQUIT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGILL, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGILL, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGTRAP, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTRAP, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGABRT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGABRT, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGBUS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGFPE, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGFPE, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGUSR1, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGUSR1, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGSEGV, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGUSR2, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGUSR2, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGPIPE, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGPIPE, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGALRM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGALRM, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGTERM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTERM, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGSTKFLT, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGSTKFLT, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGCHLD, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGURG, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGURG, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGXCPU, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGXCPU, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGXFSZ, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGXFSZ, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGVTALRM, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGVTALRM, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGPROF, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGPROF, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGWINCH, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGWINCH, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGIO, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGIO, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGPWR, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGPWR, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGSYS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGSYS, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRTMIN, NULL, {sa_handler=0x7f87963ceb90, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, 8) = 0
rt_sigaction(SIGRTMIN, NULL, {sa_handler=0x7f87963ceb90, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, 8) = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x7f87963ceb90, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, NULL, {sa_handler=0x7f87963cec30, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, 8) = 0
rt_sigaction(SIGRT_1, NULL, {sa_handler=0x7f87963cec30, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x7f87963cec30, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_2, NULL, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_3, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_3, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_4, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_4, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_5, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_5, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_6, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_6, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_7, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_7, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_8, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_8, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_9, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_9, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_10, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_10, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_11, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_11, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_12, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_12, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_13, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_13, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_14, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_14, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_15, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_15, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_16, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_16, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_17, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_17, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_18, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_18, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_19, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_19, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_20, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_20, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_21, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_21, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_22, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_22, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_23, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_23, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_24, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_24, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_25, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_25, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_26, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_26, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_27, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_27, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_28, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_28, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_29, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_29, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_30, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_30, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_31, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_31, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigaction(SIGRT_32, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGRT_32, {sa_handler=0x559b8f92bca0, sa_mask=~[RTMIN RT_1], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87963db1f0}, NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f876ed46000
mprotect(0x7f876ed47000, 8388608, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_BLOCK, ~[], ~[KILL STOP RTMIN RT_1], 8) = 0
clone(child_stack=0x7f876f545ef0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1031], tls=0x7f876f546640, child_tidptr=0x7f876f546910) = 1031
rt_sigprocmask(SIG_SETMASK, ~[KILL STOP RTMIN RT_1], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f876e545000
mprotect(0x7f876e546000, 8388608, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_BLOCK, ~[], ~[KILL STOP RTMIN RT_1], 8) = 0
clone(child_stack=0x7f876ed44ef0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1032], tls=0x7f876ed45640, child_tidptr=0x7f876ed45910) = 1032
rt_sigprocmask(SIG_SETMASK, ~[KILL STOP RTMIN RT_1], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
futex(0xc00006e950, FUTEX_WAKE_PRIVATE, 1) = 1
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f876d503000
mprotect(0x7f876d504000, 8388608, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_BLOCK, ~[], ~[KILL STOP RTMIN RT_1], 8) = 0
clone(child_stack=0x7f876dd02ef0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1034], tls=0x7f876dd03640, child_tidptr=0x7f876dd03910) = 1034
rt_sigprocmask(SIG_SETMASK, ~[KILL STOP RTMIN RT_1], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f876cd02000
mprotect(0x7f876cd03000, 8388608, PROT_READ|PROT_WRITE) = 0
rt_sigprocmask(SIG_BLOCK, ~[], ~[KILL STOP RTMIN RT_1], 8) = 0
clone(child_stack=0x7f876d501ef0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[1035], tls=0x7f876d502640, child_tidptr=0x7f876d502910) = 1035
rt_sigprocmask(SIG_SETMASK, ~[KILL STOP RTMIN RT_1], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/usr/bin/snap", 128) = 13
fcntl(0, F_GETFL)                       = 0x8402 (flags O_RDWR|O_APPEND|O_LARGEFILE)
futex(0xc00006ed50, FUTEX_WAKE_PRIVATE, 1) = 1
fcntl(1, F_GETFL)                       = 0x8402 (flags O_RDWR|O_APPEND|O_LARGEFILE)
fcntl(2, F_GETFL)                       = 0x8402 (flags O_RDWR|O_APPEND|O_LARGEFILE)
openat(AT_FDCWD, "/etc/os-release", O_RDONLY|O_CLOEXEC) = 3
epoll_create1(EPOLL_CLOEXEC)            = 4
pipe2([5, 6], O_NONBLOCK|O_CLOEXEC)     = 0
epoll_ctl(4, EPOLL_CTL_ADD, 5, {events=EPOLLIN, data={u32=2426765568, u64=94126635057408}}) = 0
epoll_ctl(4, EPOLL_CTL_ADD, 3, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1850793608, u64=140219648106120}}) = -1 EPERM (Operation not permitted)
epoll_ctl(4, EPOLL_CTL_DEL, 3, 0xc000133724) = -1 EPERM (Operation not permitted)
read(3, "NAME=\"Ubuntu\"\nVERSION=\"21.04 (Hi"..., 4096) = 376
read(3, "", 3720)                       = 0
openat(AT_FDCWD, "/proc/version", O_RDONLY|O_CLOEXEC) = 7
epoll_ctl(4, EPOLL_CTL_ADD, 7, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1850793608, u64=140219648106120}}) = 0
fcntl(7, F_GETFL)                       = 0x8000 (flags O_RDONLY|O_LARGEFILE)
fcntl(7, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 0
fstat(7, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(7, "Linux version 5.10.16.3-microsof"..., 512) = 176
read(7, "", 336)                        = 0
epoll_ctl(4, EPOLL_CTL_DEL, 7, 0xc000133744) = 0
close(7)                                = 0
newfstatat(AT_FDCWD, "/meta/snap.yaml", 0xc00011cb98, 0) = -1 ENOENT (No such file or directory)
getpid()                                = 1030
newfstatat(AT_FDCWD, "/snap/core/current/usr/share/locale-langpack/C/LC_MESSAGES/snappy.mo", 0xc00011d148, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/core/current/usr/share/locale/C/LC_MESSAGES/snappy.mo", 0xc00011d218, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/usr/share/locale-langpack/C/LC_MESSAGES/snappy.mo", 0xc00011d2e8, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/usr/share/locale/C/LC_MESSAGES/snappy.mo", 0xc00011d3b8, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/core/current/usr/share/locale-langpack/C/LC_MESSAGES/snappy.mo", 0xc00011d488, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/core/current/usr/share/locale/C/LC_MESSAGES/snappy.mo", 0xc00011d558, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/usr/share/locale-langpack/C/LC_MESSAGES/snappy.mo", 0xc00011d628, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/usr/share/locale/C/LC_MESSAGES/snappy.mo", 0xc00011d6f8, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/etc/apparmor.d/cache", 0xc00028c2a8, 0) = -1 ENOENT (No such file or directory)
statfs("/sys/fs/cgroup", {f_type=TMPFS_MAGIC, f_bsize=4096, f_blocks=1624534, f_bfree=1624534, f_bavail=1624534, f_files=1624534, f_ffree=1624519, f_fsid={val=[0, 0]}, f_namelen=255, f_frsize=4096, f_flags=ST_VALID|ST_NOSUID|ST_NODEV|ST_NOEXEC|ST_RELATIME}) = 0
mmap(NULL, 1439992, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876cba2000
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f876cb62000
uname({sysname="Linux", nodename="***", ...}) = 0
openat(AT_FDCWD, "/proc/cmdline", O_RDONLY|O_CLOEXEC) = 7
epoll_ctl(4, EPOLL_CTL_ADD, 7, {events=EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, data={u32=1850793608, u64=140219648106120}}) = 0
fcntl(7, F_GETFL)                       = 0x8000 (flags O_RDONLY|O_LARGEFILE)
fcntl(7, F_SETFL, O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 0
fstat(7, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(7, "initrd=\\initrd.img panic=-1 pty."..., 512) = 58
read(7, "", 454)                        = 0
epoll_ctl(4, EPOLL_CTL_DEL, 7, 0xc00035f9ec) = 0
close(7)                                = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/usr/bin/snap", 128) = 13
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/bin/snap", 0xc00028c858, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/core/current/usr/bin/snap", 0xc00028c928, 0) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/bin/snap", 0xc00028c9f8, AT_SYMLINK_NOFOLLOW) = -1 ENOENT (No such file or directory)
--- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=1030, si_uid=1000} ---
rt_sigreturn({mask=[]})                 = 94126630376608
openat(AT_FDCWD, "/var/lib/snapd/maintenance.json", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/var/lib/snapd/maintenance.json", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
futex(0xc000100150, FUTEX_WAKE_PRIVATE, 1) = 1
getuid()                                = 1000
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 7
connect(7, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(7)                                = 0
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 7
connect(7, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(7)                                = 0
newfstatat(AT_FDCWD, "/etc/nsswitch.conf", {st_mode=S_IFREG|0644, st_size=510, ...}, 0) = 0
newfstatat(AT_FDCWD, "/", {st_mode=S_IFDIR|0755, st_size=4096, ...}, 0) = 0
openat(AT_FDCWD, "/etc/nsswitch.conf", O_RDONLY|O_CLOEXEC) = 7
newfstatat(7, "", {st_mode=S_IFREG|0644, st_size=510, ...}, AT_EMPTY_PATH) = 0
read(7, "# /etc/nsswitch.conf\n#\n# Example"..., 4096) = 510
read(7, "", 4096)                       = 0
newfstatat(7, "", {st_mode=S_IFREG|0644, st_size=510, ...}, AT_EMPTY_PATH) = 0
close(7)                                = 0
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 7
newfstatat(7, "", {st_mode=S_IFREG|0644, st_size=23990, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 23990, PROT_READ, MAP_PRIVATE, 7, 0) = 0x7f87963eb000
close(7)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libnss_files.so.2", O_RDONLY|O_CLOEXEC) = 7
read(7, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`5\0\0\0\0\0\0"..., 832) = 832
newfstatat(7, "", {st_mode=S_IFREG|0644, st_size=55904, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 83736, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 7, 0) = 0x7f876cb4d000
mmap(0x7f876cb50000, 32768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 7, 0x3000) = 0x7f876cb50000
mmap(0x7f876cb58000, 8192, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 7, 0xb000) = 0x7f876cb58000
mmap(0x7f876cb5a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 7, 0xc000) = 0x7f876cb5a000
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x559b90a2a0d0, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
^C

What is systemctl status snapd? Also what is snap version output ?

$ systemctl status snapd
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
$ snap version
<snap freezes here forever>

BTW, I am using Ubuntu WSL.

Perhaps you need to take some additional steps then, eg. ensure that the snapd service is up and so on? Those are usually performed by systemd, but AFAIK WSL does not use systemd. There is a couple of forum topics, please see Running Snaps on WSL2 (Insiders only for now), WSL, WSLg, and systemd hacks