./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2136869530 <...> DUID 00:04:a3:03:08:15:93:78:e3:1f:4c:1c:fb:56:e6:f5:4b:05 forked to background, child pid 3188 [ 27.108052][ T3189] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.116834][ T3189] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.112' (ECDSA) to the list of known hosts. execve("./syz-executor2136869530", ["./syz-executor2136869530"], 0x7fff94e8e620 /* 10 vars */) = 0 brk(NULL) = 0x555556dd3000 brk(0x555556dd3c40) = 0x555556dd3c40 arch_prctl(ARCH_SET_FS, 0x555556dd3300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x555556dd35d0) = 3609 set_robust_list(0x555556dd35e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7fcdebaa73d0, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fcdebaa7aa0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fcdebaa7470, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fcdebaa7aa0}, 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 readlink("/proc/self/exe", "/root/syz-executor2136869530", 4096) = 28 brk(0x555556df4c40) = 0x555556df4c40 brk(0x555556df5000) = 0x555556df5000 mprotect(0x7fcdebb68000, 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 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3610 attached , child_tidptr=0x555556dd35d0) = 3610 [pid 3610] set_robust_list(0x555556dd35e0, 24) = 0 [pid 3610] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3610] setsid() = 1 [pid 3610] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3610] unshare(CLONE_NEWNS) = 0 [pid 3610] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3610] unshare(CLONE_NEWIPC) = 0 [pid 3610] unshare(CLONE_NEWCGROUP) = 0 [pid 3610] unshare(CLONE_NEWUTS) = 0 [pid 3610] unshare(CLONE_SYSVSEM) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "16777216", 8) = 8 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "536870912", 9) = 9 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "8192", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3610] close(3) = 0 [pid 3610] getpid() = 1 [pid 3610] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 3625] set_robust_list(0x7fcdeba949e0, 24) = 0 [pid 3625] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 3625] futex(0x7fcdebb6e4ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3625] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR [pid 3610] futex(0x7fcdebb6e4a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 3625] <... openat resumed>) = 4 [pid 3610] <... futex resumed>) = 0 [pid 3625] write(4, "11", 2 [pid 3610] futex(0x7fcdebb6e4ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3625] <... write resumed>) = 2 [pid 3625] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x58\x00\x00\x00\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=88}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 88 [pid 3625] futex(0x7fcdebb6e4ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3610] <... futex resumed>) = 0 [pid 3625] futex(0x7fcdebb6e4a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3610] exit_group(1) = ? [ 47.901446][ T3625] FAULT_INJECTION: forcing a failure. [ 47.901446][ T3625] name fail_futex, interval 1, probability 0, space 0, times 1 [ 47.915590][ T3625] CPU: 0 PID: 3625 Comm: syz-executor213 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 [ 47.925596][ T3625] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 [ 47.934960][ T3625] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 3625, name: syz-executor213 [ 47.944509][ T3625] preempt_count: 0, expected: 0 [ 47.949358][ T3625] RCU nest depth: 0, expected: 0 [ 47.954278][ T3625] no locks held by syz-executor213/3625. [ 47.959890][ T3625] irq event stamp: 488 [ 47.963948][ T3625] hardirqs last enabled at (487): [] finish_task_switch.isra.0+0x2b5/0xc70 [ 47.974179][ T3625] hardirqs last disabled at (488): [] dump_stack_lvl+0x2e/0x134 [ 47.983383][ T3625] softirqs last enabled at (480): [] __irq_exit_rcu+0x123/0x180 [ 47.992657][ T3625] softirqs last disabled at (457): [] __irq_exit_rcu+0x123/0x180 [ 48.003063][ T3625] CPU: 0 PID: 3625 Comm: syz-executor213 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 [ 48.012949][ T3625] syz-executor213[3625] cmdline: [ 48.017953][ T3625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 48.028001][ T3625] Call Trace: [ 48.031281][ T3625] [ 48.034220][ T3625] dump_stack_lvl+0xcd/0x134 [ 48.038832][ T3625] __might_resched.cold+0x222/0x26b [ 48.044041][ T3625] down_read_killable+0x75/0x490 [ 48.048999][ T3625] ? down_read+0x450/0x450 [ 48.053447][ T3625] __access_remote_vm+0xac/0x6f0 [ 48.058401][ T3625] ? follow_phys+0x2c0/0x2c0 [ 48.063002][ T3625] ? do_raw_spin_lock+0x120/0x2a0 [ 48.068037][ T3625] ? rwlock_bug.part.0+0x90/0x90 [ 48.072981][ T3625] ? __up_console_sem+0x47/0xc0 [ 48.077843][ T3625] get_mm_cmdline.part.0+0x217/0x620 [ 48.085141][ T3625] ? dname_to_vma_addr.isra.0+0x360/0x360 [ 48.090869][ T3625] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 48.096776][ T3625] get_task_cmdline_kernel+0x1d9/0x220 [ 48.102253][ T3625] dump_stack_print_cmdline.part.0+0x82/0x150 [ 48.108336][ T3625] ? _atomic_dec_and_lock_irqsave+0x150/0x150 [ 48.114454][ T3625] ? dump_stack_print_info+0xc6/0x190 [ 48.119842][ T3625] dump_stack_print_info+0x185/0x190 [ 48.125166][ T3625] dump_stack_lvl+0xc1/0x134 [ 48.129782][ T3625] should_fail.cold+0x5/0xa [ 48.134305][ T3625] get_futex_key+0x5a8/0x1c30 [ 48.138991][ T3625] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.145075][ T3625] ? futex_setup_timer+0xf0/0xf0 [ 48.150030][ T3625] futex_wait_setup+0xa7/0x230 [ 48.154815][ T3625] ? futex_wait_multiple+0xc90/0xc90 [ 48.160142][ T3625] futex_wait+0x264/0x680 [ 48.164486][ T3625] ? futex_wait_setup+0x230/0x230 [ 48.169543][ T3625] ? do_raw_spin_lock+0x120/0x2a0 [ 48.174577][ T3625] ? rwlock_bug.part.0+0x90/0x90 [ 48.179522][ T3625] ? _raw_spin_lock_irq+0x41/0x50 [ 48.184562][ T3625] do_futex+0x1af/0x300 [ 48.188730][ T3625] ? __ia32_sys_get_robust_list+0x3b0/0x3b0 [ 48.194647][ T3625] ? find_held_lock+0x2d/0x110 [ 48.199428][ T3625] __x64_sys_futex+0x1b0/0x4a0 [ 48.204205][ T3625] ? do_futex+0x300/0x300 [ 48.208554][ T3625] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.213760][ T3625] ? lockdep_hardirqs_on+0x79/0x100 [ 48.218974][ T3625] ? _raw_spin_unlock_irq+0x2a/0x40 [ 48.224183][ T3625] ? ptrace_notify+0xfa/0x140 [ 48.228872][ T3625] do_syscall_64+0x35/0xb0 [ 48.233318][ T3625] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.239219][ T3625] RIP: 0033:0x7fcdebae5fe9 [ 48.243640][ T3625] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 48.263252][ T3625] RSP: 002b:00007fcdeba942f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 48.271668][ T3625] RAX: ffffffffffffffda RBX: 00007fcdebb6e4a8 RCX: 00007fcdebae5fe9 [ 48.279639][ T3625] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcdebb6e4a8 [ 48.287610][ T3625] RBP: 00007fcdebb6e4a0 R08: 0000000000003131 R09: 0000000000003131 [ 48.295584][ T3625] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcdeba94300 [ 48.303737][ T3625] R13: 0000000000000002 R14: 00007fcdeba94400 R15: 0000000000022000 [ 48.311727][ T3625] [ 48.314755][ T3625] syz-executor213[3625] cmdline: [ 48.319790][ T3625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 48.329841][ T3625] Call Trace: [ 48.333117][ T3625] [ 48.336046][ T3625] dump_stack_lvl+0xcd/0x134 [ 48.340659][ T3625] should_fail.cold+0x5/0xa [ 48.345176][ T3625] get_futex_key+0x5a8/0x1c30 [ 48.349864][ T3625] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.355859][ T3625] ? futex_setup_timer+0xf0/0xf0 [ 48.360903][ T3625] futex_wait_setup+0xa7/0x230 [ 48.365683][ T3625] ? futex_wait_multiple+0xc90/0xc90 [ 48.370991][ T3625] futex_wait+0x264/0x680 [ 48.375335][ T3625] ? futex_wait_setup+0x230/0x230 [ 48.380410][ T3625] ? do_raw_spin_lock+0x120/0x2a0 [ 48.385448][ T3625] ? rwlock_bug.part.0+0x90/0x90 [ 48.390397][ T3625] ? _raw_spin_lock_irq+0x41/0x50 [ 48.395435][ T3625] do_futex+0x1af/0x300 [ 48.399604][ T3625] ? __ia32_sys_get_robust_list+0x3b0/0x3b0 [ 48.405509][ T3625] ? find_held_lock+0x2d/0x110 [ 48.410285][ T3625] __x64_sys_futex+0x1b0/0x4a0 [ 48.415077][ T3625] ? do_futex+0x300/0x300 [ 48.419413][ T3625] ? _raw_spin_unlock_irq+0x1f/0x40 [ 48.424616][ T3625] ? lockdep_hardirqs_on+0x79/0x100 [ 48.429844][ T3625] ? _raw_spin_unlock_irq+0x2a/0x40 [ 48.435046][ T3625] ? ptrace_notify+0xfa/0x140 [ 48.439735][ T3625] do_syscall_64+0x35/0xb0 [ 48.444161][ T3625] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 48.450061][ T3625] RIP: 0033:0x7fcdebae5fe9 [ 48.454479][ T3625] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 48.474102][ T3625] RSP: 002b:00007fcdeba942f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 48.482531][ T3625] RAX: ffffffffffffffda RBX: 00007fcdebb6e4a8 RCX: 00007fcdebae5fe9 [ 48.490595][ T3625] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcdebb6e4a8 [pid 3625] <... futex resumed>) = ? [pid 3625] +++ exited with 1 +++ [pid 3610] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3610, si_uid=0, si_status=1, si_utime=0, si_stime=148} --- exit_group(0) = ? +++ exited with 0 +++ [ 48.498570][ T3625] RBP: 00007fcdebb6e4a0 R08: 000000000000313