./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2637379804 <...> Warning: Permanently added '10.128.1.156' (ED25519) to the list of known hosts. execve("./syz-executor2637379804", ["./syz-executor2637379804"], 0x7fff0d792da0 /* 10 vars */) = 0 brk(NULL) = 0x55558c9e8000 brk(0x55558c9e8e00) = 0x55558c9e8e00 arch_prctl(ARCH_SET_FS, 0x55558c9e8480) = 0 set_tid_address(0x55558c9e8750) = 290 set_robust_list(0x55558c9e8760, 24) = 0 rseq(0x55558c9e8da0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2637379804", 4096) = 28 getrandom("\xdb\xf1\x56\x2c\xb1\xd7\x33\x08", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558c9e8e00 brk(0x55558ca09e00) = 0x55558ca09e00 brk(0x55558ca0a000) = 0x55558ca0a000 mprotect(0x7f56d5096000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f56d4feaee0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f56d4ff4d70}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f56d4feaee0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f56d4ff4d70}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558c9e8750) = 291 ./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x55558c9e8760, 24) = 0 [pid 291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 291] getppid() = 0 [pid 291] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 291] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 291] unshare(CLONE_NEWNS) = 0 [pid 291] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 291] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 291] unshare(CLONE_NEWCGROUP) = 0 [pid 291] unshare(CLONE_NEWUTS) = 0 [pid 291] unshare(CLONE_SYSVSEM) = 0 [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 291] getpid() = 1 [pid 291] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e8 7a 35 8c ff e8 a1 04 22 ff eb 9b e8 6e 35 8c ff e8 95 04 [ 24.985370][ T49] RSP: 0018:ffffc900009e70a0 EFLAGS: 00010293 [ 24.991270][ T49] RAX: ffffffff81de776f RBX: 0000008000000000 RCX: ffff888101dc13c0 [ 24.999093][ T49] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 25.006893][ T49] RBP: ffffc900009e7490 R08: ffffffff81de41e3 R09: ffffed10220f42ff [ 25.014705][ T49] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 [ 25.022516][ T49] R13: ffffc900009e77d0 R14: 000000c410000000 R15: ffffc900009e7360 [ 25.030326][ T49] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.039092][ T49] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.045522][ T49] CR2: 0000000000000002 CR3: 000000000660f000 CR4: 00000000003506a0 [ 25.053327][ T49] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.061134][ T49] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.068953][ T49] Call Trace: [ 25.072086][ T49] ? __die_body+0x62/0xb0 [ 25.076356][ T49] ? die+0x88/0xb0 [ 25.079935][ T49] ? do_trap+0x1a4/0x310 [ 25.083997][ T49] ? ext4_writepages+0x3bdf/0x3c00 [ 25.088944][ T49] ? handle_invalid_op+0x95/0xc0 [ 25.093722][ T49] ? ext4_writepages+0x3bdf/0x3c00 [ 25.098662][ T49] ? exc_invalid_op+0x32/0x50 [ 25.103177][ T49] ? asm_exc_invalid_op+0x12/0x20 [ 25.108059][ T49] ? ext4_writepages+0x653/0x3c00 [ 25.112977][ T49] ? ext4_writepages+0x3bdf/0x3c00 [ 25.117847][ T49] ? ext4_writepages+0x3bdf/0x3c00 [ 25.122801][ T49] ? kvm_sched_clock_read+0x18/0x40 [ 25.127826][ T49] ? ext4_readpage+0x230/0x230 [ 25.132434][ T49] ? _raw_spin_lock_irqsave+0xf9/0x210 [ 25.137722][ T49] ? _raw_spin_lock+0x1b0/0x1b0 [ 25.142407][ T49] ? ext4_readpage+0x230/0x230 [ 25.147009][ T49] do_writepages+0x12e/0x270 [ 25.151434][ T49] ? _raw_spin_lock+0x1b0/0x1b0 [ 25.156119][ T49] ? __writepage+0x130/0x130 [ 25.160545][ T49] ? __kasan_check_write+0x14/0x20 [ 25.165492][ T49] ? _raw_spin_lock+0xa4/0x1b0 [ 25.170096][ T49] __writeback_single_inode+0xd7/0xac0 [ 25.175386][ T49] writeback_sb_inodes+0x99c/0x16b0 [ 25.180420][ T49] ? _raw_spin_lock+0xa4/0x1b0 [ 25.185021][ T49] ? queue_io+0x520/0x520 [ 25.189203][ T49] ? writeback_sb_inodes+0x16b0/0x16b0 [ 25.194487][ T49] ? queue_io+0x3d3/0x520 [ 25.198649][ T49] wb_writeback+0x404/0xc60 [ 25.203011][ T49] ? wb_io_lists_depopulated+0x180/0x180 [ 25.208457][ T49] ? set_worker_desc+0x158/0x1c0 [ 25.213234][ T49] ? update_load_avg+0x541/0x1690 [ 25.218093][ T49] ? __kasan_check_write+0x14/0x20 [ 25.223053][ T49] wb_workfn+0x3d9/0x1110 [ 25.227233][ T49] ? inode_wait_for_writeback+0x280/0x280 [ 25.232760][ T49] ? find_next_bit+0x7f/0x100 [ 25.237275][ T49] ? _raw_spin_unlock_irq+0x4e/0x70 [ 25.242323][ T49] ? finish_task_switch+0x130/0x5a0 [ 25.247338][ T49] ? __switch_to_asm+0x34/0x60 [ 25.251943][ T49] ? __kasan_check_read+0x11/0x20 [ 25.256799][ T49] ? read_word_at_a_time+0x12/0x20 [ 25.261746][ T49] ? strscpy+0x9c/0x260 [ 25.265753][ T49] process_one_work+0x6dc/0xbd0 [ 25.270445][ T49] worker_thread+0xaea/0x1510 [ 25.274939][ T49] ? _raw_spin_lock+0x1b0/0x1b0 [ 25.279627][ T49] ? __kasan_check_read+0x11/0x20 [ 25.284484][ T49] kthread+0x34b/0x3d0 [ 25.288390][ T49] ? worker_clr_flags+0x180/0x180 [ 25.293255][ T49] ? kthread_blkcg+0xd0/0xd0 [ 25.297680][ T49] ret_from_fork+0x1f/0x30 [ 25.301927][ T49] Modules linked in: [ 25.305760][ T49] ---[ end trace d1c511a735e11369 ]--- [ 25.311021][ T49] RIP: 0010:ext4_writepages+0x3bdf/0x3c00 [ 25.316511][ T49] Code: 38 8c ff 31 ff 89 de e8 2f 38 8c ff 45 84 f6 75 27 e8 95 35 8c ff 49 be 00 00 00 00 00 fc ff df e9 0e f7 ff ff e8 81 35 8c ff <0f> 0b e8 7a 35 8c ff e8 a1 04 22 ff eb 9b e8 6e 35 8c ff e8 95 04 [ 25.335981][ T49] RSP: 0018:ffffc900009e70a0 EFLAGS: 00010293 [ 25.341886][ T49] RAX: ffffffff81de776f RBX: 0000008000000000 RCX: ffff888101dc13c0 [ 25.349670][ T49] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 25.357503][ T49] RBP: ffffc900009e7490 R08: ffffffff81de41e3 R09: ffffed10220f42ff [ 25.365302][ T49] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 [ 25.373125][ T49] R13: ffffc900009e77d0 R14: 000000c410000000 R15: ffffc900009e7360 [ 25.380924][ T49] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.389676][ T49] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.396119][ T49] CR2: 0000000000000002 CR3: 000000000660f000 CR4: 00000000003506a0 [ 25.403925][ T49] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.411741][ T49] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.419532][ T49] Kernel panic - not syncing: Fatal exception [ 25.425741][ T49] Kernel Offset: disabled [ 25.429880][ T49] Rebooting in 86400 seconds..