./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2903877133 <...> Warning: Permanently added '10.128.0.67' (ECDSA) to the list of known hosts. execve("./syz-executor2903877133", ["./syz-executor2903877133"], 0x7fffc41cd810 /* 10 vars */) = 0 brk(NULL) = 0x55555630d000 brk(0x55555630dc40) = 0x55555630dc40 arch_prctl(ARCH_SET_FS, 0x55555630d300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2903877133", 4096) = 28 brk(0x55555632ec40) = 0x55555632ec40 brk(0x55555632f000) = 0x55555632f000 mprotect(0x7f7f964e4000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3609 attached , child_tidptr=0x55555630d5d0) = 3609 [pid 3609] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3609] setsid() = 1 [pid 3609] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3609] unshare(CLONE_NEWNS) = 0 [pid 3609] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3609] unshare(CLONE_NEWIPC) = 0 [pid 3609] unshare(CLONE_NEWCGROUP) = 0 [pid 3609] unshare(CLONE_NEWUTS) = 0 [pid 3609] unshare(CLONE_SYSVSEM) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "16777216", 8) = 8 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "536870912", 9) = 9 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "8192", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3609] close(3) = 0 [pid 3609] getpid() = 1 [pid 3609] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 41.736379][ T3609] dump_stack_lvl+0xcd/0x134 [ 41.740985][ T3609] print_report+0x15e/0x45d [ 41.745494][ T3609] ? __phys_addr+0xc4/0x140 [ 41.749998][ T3609] ? nilfs_segctor_confirm+0x175/0x190 [ 41.755459][ T3609] kasan_report+0xbb/0x1f0 [ 41.759893][ T3609] ? nilfs_segctor_confirm+0x175/0x190 [ 41.765357][ T3609] nilfs_segctor_confirm+0x175/0x190 [ 41.770647][ T3609] nilfs_detach_log_writer+0x856/0x9f0 [ 41.776113][ T3609] ? nilfs_clean_segments+0xa80/0xa80 [ 41.781500][ T3609] ? hook_sb_pivotroot+0xe0/0xe0 [ 41.786454][ T3609] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 41.792265][ T3609] ? dispose_list+0x1e0/0x1e0 [ 41.796951][ T3609] nilfs_put_super+0x3f/0x1a0 [ 41.801643][ T3609] ? nilfs_freeze+0xc0/0xc0 [ 41.806151][ T3609] generic_shutdown_super+0x154/0x410 [ 41.811528][ T3609] kill_block_super+0x97/0xf0 [ 41.816206][ T3609] deactivate_locked_super+0x94/0x160 [ 41.821582][ T3609] deactivate_super+0xad/0xd0 [ 41.826265][ T3609] cleanup_mnt+0x2ae/0x3d0 [ 41.830683][ T3609] task_work_run+0x16b/0x270 [ 41.835288][ T3609] ? task_work_cancel+0x30/0x30 [ 41.840158][ T3609] do_exit+0xb35/0x2a20 [ 41.844315][ T3609] ? lock_downgrade+0x6e0/0x6e0 [ 41.849169][ T3609] ? do_raw_spin_lock+0x120/0x2a0 [ 41.854201][ T3609] ? mm_update_next_owner+0x7b0/0x7b0 [ 41.859578][ T3609] ? rwlock_bug.part.0+0x90/0x90 [ 41.864529][ T3609] do_group_exit+0xd0/0x2a0 [ 41.869038][ T3609] __x64_sys_exit_group+0x3a/0x50 [ 41.874063][ T3609] do_syscall_64+0x35/0xb0 [ 41.878482][ T3609] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 41.884388][ T3609] RIP: 0033:0x7f7f96472ba9 [ 41.888801][ T3609] Code: Unable to access opcode bytes at 0x7f7f96472b7f. [ 41.895809][ T3609] RSP: 002b:00007fff812c4e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 41.904225][ T3609] RAX: ffffffffffffffda RBX: 00007f7f964ea330 RCX: 00007f7f96472ba9 [ 41.912196][ T3609] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 41.920164][ T3609] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f7f964e4e40 [ 41.928131][ T3609] R10: 00007f7f964e4e40 R11: 0000000000000246 R12: 00007f7f964ea330 [ 41.936099][ T3609] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 41.944073][ T3609] [ 41.947089][ T3609] [ 41.949434][ T3609] Allocated by task 3609: [ 41.953750][ T3609] kasan_save_stack+0x1e/0x40 [ 41.958436][ T3609] kasan_set_track+0x21/0x30 [ 41.963035][ T3609] __kasan_kmalloc+0xa1/0xb0 [ 41.967631][ T3609] nilfs_find_or_create_root+0x84/0x4d0 [ 41.973187][ T3609] nilfs_attach_checkpoint+0xc1/0x4b0 [ 41.978557][ T3609] nilfs_mount+0xb12/0xfb0 [ 41.982973][ T3609] legacy_get_tree+0x105/0x220 [ 41.987738][ T3609] vfs_get_tree+0x89/0x2f0 [ 41.992155][ T3609] path_mount+0x1326/0x1e20 [ 41.996658][ T3609] __x64_sys_mount+0x27f/0x300 [ 42.001423][ T3609] do_syscall_64+0x35/0xb0 [ 42.005847][ T3609] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.011749][ T3609] [ 42.014066][ T3609] Freed by task 3609: [ 42.018035][ T3609] kasan_save_stack+0x1e/0x40 [ 42.022719][ T3609] kasan_set_track+0x21/0x30 [ 42.027320][ T3609] kasan_save_free_info+0x2a/0x40 [ 42.032342][ T3609] ____kasan_slab_free+0x160/0x1c0 [ 42.037475][ T3609] slab_free_freelist_hook+0x8b/0x1c0 [ 42.042869][ T3609] __kmem_cache_free+0xab/0x3b0 [ 42.047731][ T3609] nilfs_put_root+0xb1/0xd0 [ 42.052246][ T3609] nilfs_clear_inode+0x29a/0x330 [ 42.057196][ T3609] nilfs_evict_inode+0x318/0x440 [ 42.062134][ T3609] evict+0x2ed/0x6b0 [ 42.066033][ T3609] dispose_list+0x117/0x1e0 [ 42.070538][ T3609] evict_inodes+0x352/0x450 [ 42.075052][ T3609] generic_shutdown_super+0xab/0x410 [ 42.080345][ T3609] kill_block_super+0x97/0xf0 [ 42.085020][ T3609] deactivate_locked_super+0x94/0x160 [ 42.090394][ T3609] deactivate_super+0xad/0xd0 [ 42.095072][ T3609] cleanup_mnt+0x2ae/0x3d0 [ 42.099484][ T3609] task_work_run+0x16b/0x270 [ 42.104083][ T3609] do_exit+0xb35/0x2a20 [ 42.108234][ T3609] do_group_exit+0xd0/0x2a0 [ 42.112735][ T3609] __x64_sys_exit_group+0x3a/0x50 [ 42.117757][ T3609] do_syscall_64+0x35/0xb0 [ 42.122172][ T3609] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.128081][ T3609] [ 42.130397][ T3609] The buggy address belongs to the object at ffff88801274fc00 [ 42.130397][ T3609] which belongs to the cache kmalloc-256 of size 256 [ 42.144446][ T3609] The buggy address is located 48 bytes inside of [ 42.144446][ T3609] 256-byte region [ffff88801274fc00, ffff88801274fd00) [ 42.157630][ T3609] [ 42.159945][ T3609] The buggy address belongs to the physical page: [ 42.166348][ T3609] page:ffffea000049d380 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1274e [ 42.176494][ T3609] head:ffffea000049d380 order:1 compound_mapcount:0 compound_pincount:0 [ 42.184815][ T3609] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 42.192799][ T3609] raw: 00fff00000010200 ffff888011841b40 dead000080100010 0000000000000000 [ 42.201396][ T3609] raw: 0000000000000000 dead000000000001 00000001ffffffff 0000000000000000 [ 42.209973][ T3609] page dumped because: kasan: bad access detected [ 42.216376][ T3609] page_owner tracks the page as allocated [ 42.222079][ T3609] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 2053424585, free_ts 0 [ 42.241703][ T3609] get_page_from_freelist+0x1092/0x2d20 [ 42.247253][ T3609] __alloc_pages+0x1c7/0x5a0 [ 42.251849][ T3609] alloc_page_interleave+0x1e/0x200 [ 42.257057][ T3609] alloc_pages+0x22f/0x270 [ 42.261482][ T3609] allocate_slab+0x213/0x300 [ 42.266076][ T3609] ___slab_alloc+0xac1/0x1430 [ 42.270761][ T3609] __slab_alloc.constprop.0+0x4d/0xa0 [ 42.276142][ T3609] __kmem_cache_alloc_node+0x18a/0x3d0 [ 42.281611][ T3609] __kmalloc_node_track_caller+0x45/0xc0 [ 42.287249][ T3609] krealloc+0x8c/0xf0 [ 42.291235][ T3609] add_sysfs_param+0xca/0x960 [ 42.295909][ T3609] param_sysfs_init+0x301/0x43b [ 42.300767][ T3609] do_one_initcall+0x13d/0x780 [ 42.305554][ T3609] kernel_init_freeable+0x6ff/0x788 [ 42.310761][ T3609] kernel_init+0x1a/0x1d0 [ 42.315099][ T3609] ret_from_fork+0x1f/0x30 [ 42.319521][ T3609] page_owner free stack trace missing [ 42.324877][ T3609] [ 42.327192][ T3609] Memory state around the buggy address: [ 42.332813][ T3609] ffff88801274fb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.340867][ T3609] ffff88801274fb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.348921][ T3609] >ffff88801274fc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 42.356969][ T3609] ^ [ 42.362590][ T3609] ffff88801274fc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 42.370647][ T3609] ffff88801274fd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 42.378698][ T3609] ================================================================== [ 42.393169][ T3609] Kernel panic - not syncing: panic_on_warn set ... [ 42.399764][ T3609] CPU: 0 PID: 3609 Comm: syz-executor290 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0 [ 42.409644][ T3609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 42.419686][ T3609] Call Trace: [ 42.422954][ T3609] [ 42.425870][ T3609] dump_stack_lvl+0xcd/0x134 [ 42.430455][ T3609] panic+0x2c8/0x622 [ 42.434341][ T3609] ? panic_print_sys_info.part.0+0x110/0x110 [ 42.440313][ T3609] ? preempt_schedule_common+0x59/0xc0 [ 42.445757][ T3609] ? preempt_schedule_thunk+0x16/0x18 [ 42.451123][ T3609] end_report.part.0+0x3f/0x7c [ 42.455875][ T3609] ? nilfs_segctor_confirm+0x175/0x190 [ 42.461316][ T3609] kasan_report.cold+0xa/0xf [ 42.465893][ T3609] ? nilfs_segctor_confirm+0x175/0x190 [ 42.471335][ T3609] nilfs_segctor_confirm+0x175/0x190 [ 42.476604][ T3609] nilfs_detach_log_writer+0x856/0x9f0 [ 42.482048][ T3609] ? nilfs_clean_segments+0xa80/0xa80 [ 42.487413][ T3609] ? hook_sb_pivotroot+0xe0/0xe0 [ 42.492344][ T3609] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 42.498134][ T3609] ? dispose_list+0x1e0/0x1e0 [ 42.502800][ T3609] nilfs_put_super+0x3f/0x1a0 [ 42.507465][ T3609] ? nilfs_freeze+0xc0/0xc0 [ 42.511950][ T3609] generic_shutdown_super+0x154/0x410 [ 42.517308][ T3609] kill_block_super+0x97/0xf0 [ 42.521970][ T3609] deactivate_locked_super+0x94/0x160 [ 42.527325][ T3609] deactivate_super+0xad/0xd0 [ 42.531984][ T3609] cleanup_mnt+0x2ae/0x3d0 [ 42.536383][ T3609] task_work_run+0x16b/0x270 [ 42.540971][ T3609] ? task_work_cancel+0x30/0x30 [ 42.545818][ T3609] do_exit+0xb35/0x2a20 [ 42.549958][ T3609] ? lock_downgrade+0x6e0/0x6e0 [ 42.554797][ T3609] ? do_raw_spin_lock+0x120/0x2a0 [ 42.559806][ T3609] ? mm_update_next_owner+0x7b0/0x7b0 [ 42.565161][ T3609] ? rwlock_bug.part.0+0x90/0x90 [ 42.570085][ T3609] do_group_exit+0xd0/0x2a0 [ 42.574570][ T3609] __x64_sys_exit_group+0x3a/0x50 [ 42.579576][ T3609] do_syscall_64+0x35/0xb0 [ 42.583978][ T3609] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.589862][ T3609] RIP: 0033:0x7f7f96472ba9 [ 42.594258][ T3609] Code: Unable to access opcode bytes at 0x7f7f96472b7f. [ 42.601251][ T3609] RSP: 002b:00007fff812c4e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 42.609648][ T3609] RAX: ffffffffffffffda RBX: 00007f7f964ea330 RCX: 00007f7f96472ba9 [ 42.617603][ T3609] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 42.625556][ T3609] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f7f964e4e40 [ 42.633509][ T3609] R10: 00007f7f964e4e40 R11: 0000000000000246 R12: 00007f7f964ea330 [ 42.641466][ T3609] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 42.649423][ T3609] [ 42.652588][ T3609] Kernel Offset: disabled [ 42.656911][ T3609] Rebooting in 86400 seconds..