./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4080169317 <...> Warning: Permanently added '10.128.0.55' (ED25519) to the list of known hosts. execve("./syz-executor4080169317", ["./syz-executor4080169317"], 0x7ffd21e72830 /* 10 vars */) = 0 brk(NULL) = 0x5555785b2000 brk(0x5555785b2d00) = 0x5555785b2d00 arch_prctl(ARCH_SET_FS, 0x5555785b2380) = 0 set_tid_address(0x5555785b2650) = 294 set_robust_list(0x5555785b2660, 24) = 0 rseq(0x5555785b2ca0, 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-executor4080169317", 4096) = 28 getrandom("\x54\x92\xb8\x00\xca\x20\x96\x37", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555785b2d00 brk(0x5555785d3d00) = 0x5555785d3d00 brk(0x5555785d4000) = 0x5555785d4000 mprotect(0x7f8fe7771000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555785b2650) = 295 ./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x5555785b2660, 24) = 0 [pid 295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 295] getppid() = 0 [pid 295] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 295] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 295] unshare(CLONE_NEWNS) = 0 [pid 295] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 295] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 295] unshare(CLONE_NEWCGROUP) = 0 [pid 295] unshare(CLONE_NEWUTS) = 0 [pid 295] unshare(CLONE_SYSVSEM) = 0 [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 295] getpid() = 1 [pid 295] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e8 fe f4 7f ff e8 f5 e7 0a ff e9 46 c3 ff ff e8 ef f4 7f ff [ 20.261889][ T43] RSP: 0018:ffffc900002cf000 EFLAGS: 00010293 [ 20.267789][ T43] RAX: ffffffff81f59fbb RBX: 0000008000000000 RCX: ffff888109a18000 [ 20.275602][ T43] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 20.283416][ T43] RBP: ffffc900002cf410 R08: ffffffff81f5671b R09: ffffed10200aeb7b [ 20.291226][ T43] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810e498000 [ 20.299034][ T43] R13: ffff888100575d10 R14: 000000c410000000 R15: ffffc900002cf2e0 [ 20.306848][ T43] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 20.315617][ T43] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.322035][ T43] CR2: 00004000000000c0 CR3: 0000000122da7000 CR4: 00000000003506a0 [ 20.329849][ T43] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.337660][ T43] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.345468][ T43] Call Trace: [ 20.348597][ T43] [ 20.351372][ T43] ? __die_body+0x62/0xb0 [ 20.355541][ T43] ? die+0x88/0xb0 [ 20.359097][ T43] ? do_trap+0x103/0x330 [ 20.363176][ T43] ? ext4_writepages+0x3fab/0x3fd0 [ 20.368123][ T43] ? handle_invalid_op+0x95/0xc0 [ 20.372894][ T43] ? ext4_writepages+0x3fab/0x3fd0 [ 20.377842][ T43] ? exc_invalid_op+0x32/0x50 [ 20.382357][ T43] ? asm_exc_invalid_op+0x1b/0x20 [ 20.387222][ T43] ? ext4_writepages+0x70b/0x3fd0 [ 20.392075][ T43] ? ext4_writepages+0x3fab/0x3fd0 [ 20.397024][ T43] ? ext4_writepages+0x3fab/0x3fd0 [ 20.401969][ T43] ? kasan_save_alloc_info+0x1f/0x30 [ 20.407090][ T43] ? __kasan_slab_alloc+0x6c/0x80 [ 20.411950][ T43] ? slab_post_alloc_hook+0x53/0x2c0 [ 20.417071][ T43] ? avc_alloc_node+0x8f/0x500 [ 20.421670][ T43] ? avc_compute_av+0x146/0x830 [ 20.426358][ T43] ? avc_has_perm_noaudit+0x299/0x430 [ 20.431567][ T43] ? avc_has_perm+0xd2/0x260 [ 20.435991][ T43] ? file_has_perm+0x508/0x6c0 [ 20.440592][ T43] ? selinux_file_permission+0x440/0x560 [ 20.446060][ T43] ? do_iter_read+0x1de/0xc80 [ 20.450572][ T43] ? vfs_iter_read+0x7c/0xa0 [ 20.454998][ T43] ? worker_thread+0xa60/0x1260 [ 20.459687][ T43] ? kthread+0x26d/0x300 [ 20.463768][ T43] ? ext4_read_folio+0x240/0x240 [ 20.468544][ T43] ? xas_load+0x39d/0x3b0 [ 20.472708][ T43] ? __kasan_check_write+0x14/0x20 [ 20.477654][ T43] ? __filemap_get_folio+0x95e/0xae0 [ 20.482776][ T43] ? cpudl_cleanup+0x40/0x40 [ 20.487210][ T43] ? __kasan_check_write+0x14/0x20 [ 20.492149][ T43] ? update_load_avg+0x513/0x1530 [ 20.497008][ T43] ? ext4_read_folio+0x240/0x240 [ 20.501783][ T43] do_writepages+0x385/0x620 [ 20.506212][ T43] ? __writepage+0x130/0x130 [ 20.510636][ T43] ? copy_page_from_iter_atomic+0x92d/0x10b0 [ 20.516451][ T43] ? memcpy+0x56/0x70 [ 20.520270][ T43] ? copy_page_from_iter_atomic+0x43b/0x10b0 [ 20.526087][ T43] ? shmem_get_folio+0xa0/0xa0 [ 20.530683][ T43] __writeback_single_inode+0xdc/0xb80 [ 20.535980][ T43] writeback_sb_inodes+0xb32/0x1910 [ 20.541012][ T43] ? __kasan_check_write+0x14/0x20 [ 20.545961][ T43] ? _raw_spin_lock+0xa4/0x1b0 [ 20.550562][ T43] ? queue_io+0x520/0x520 [ 20.554726][ T43] ? __writeback_inodes_wb+0x3f0/0x3f0 [ 20.560022][ T43] ? queue_io+0x3d0/0x520 [ 20.564185][ T43] ? memset+0x35/0x40 [ 20.568008][ T43] wb_writeback+0x3c8/0xa00 [ 20.572346][ T43] ? inode_cgwb_move_to_attached+0x3c0/0x3c0 [ 20.578157][ T43] ? set_worker_desc+0x158/0x1c0 [ 20.582933][ T43] ? __kasan_check_write+0x14/0x20 [ 20.587882][ T43] wb_workfn+0x399/0x1030 [ 20.592048][ T43] ? inode_wait_for_writeback+0x280/0x280 [ 20.597601][ T43] ? kthread_data+0x53/0xc0 [ 20.601941][ T43] ? _raw_spin_unlock+0x4c/0x70 [ 20.606626][ T43] ? finish_task_switch+0x167/0x7b0 [ 20.611663][ T43] ? __kasan_check_read+0x11/0x20 [ 20.616520][ T43] ? read_word_at_a_time+0x12/0x20 [ 20.621470][ T43] ? strscpy+0x9c/0x260 [ 20.625463][ T43] process_one_work+0x73d/0xcb0 [ 20.630151][ T43] worker_thread+0xa60/0x1260 [ 20.634665][ T43] kthread+0x26d/0x300 [ 20.638564][ T43] ? worker_clr_flags+0x1a0/0x1a0 [ 20.643425][ T43] ? kthread_blkcg+0xd0/0xd0 [ 20.647853][ T43] ret_from_fork+0x1f/0x30 [ 20.652108][ T43] [ 20.654971][ T43] Modules linked in: [ 20.658795][ T43] ---[ end trace 0000000000000000 ]--- [ 20.664065][ T43] RIP: 0010:ext4_writepages+0x3fab/0x3fd0 [ 20.669581][ T43] Code: f7 7f ff 31 ff 89 de e8 b3 f7 7f ff 45 84 f6 75 2a e8 19 f5 7f ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 05 f5 7f ff <0f> 0b e8 fe f4 7f ff e8 f5 e7 0a ff e9 46 c3 ff ff e8 ef f4 7f ff [ 20.689036][ T43] RSP: 0018:ffffc900002cf000 EFLAGS: 00010293 [ 20.694893][ T43] RAX: ffffffff81f59fbb RBX: 0000008000000000 RCX: ffff888109a18000 [ 20.702727][ T43] RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 [ 20.710528][ T43] RBP: ffffc900002cf410 R08: ffffffff81f5671b R09: ffffed10200aeb7b [ 20.718343][ T43] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88810e498000 [ 20.726150][ T43] R13: ffff888100575d10 R14: 000000c410000000 R15: ffffc900002cf2e0 [ 20.733950][ T43] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 20.742734][ T43] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.749152][ T43] CR2: 0000556ba246e0f8 CR3: 00000001105c8000 CR4: 00000000003506a0 [ 20.756970][ T43] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.764760][ T43] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.772595][ T43] Kernel panic - not syncing: Fatal exception [ 20.778717][ T43] Kernel Offset: disabled [ 20.782832][ T43] Rebooting in 86400 seconds..