./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor215917550 <...> Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. execve("./syz-executor215917550", ["./syz-executor215917550"], 0x7ffeedc983a0 /* 10 vars */) = 0 brk(NULL) = 0x55555691d000 brk(0x55555691dc40) = 0x55555691dc40 arch_prctl(ARCH_SET_FS, 0x55555691d300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor215917550", 4096) = 27 brk(0x55555693ec40) = 0x55555693ec40 brk(0x55555693f000) = 0x55555693f000 mprotect(0x7f6278ac9000, 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 3607 attached , child_tidptr=0x55555691d5d0) = 3607 [pid 3607] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3607] setsid() = 1 [pid 3607] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3607] unshare(CLONE_NEWNS) = 0 [pid 3607] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3607] unshare(CLONE_NEWIPC) = 0 [pid 3607] unshare(CLONE_NEWCGROUP) = 0 [pid 3607] unshare(CLONE_NEWUTS) = 0 [pid 3607] unshare(CLONE_SYSVSEM) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "16777216", 8) = 8 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "536870912", 9) = 9 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "8192", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3607] close(3) = 0 [pid 3607] getpid() = 1 [pid 3607] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 51.181042][ T3607] dump_stack_lvl+0xcd/0x134 [ 51.185624][ T3607] print_report.cold+0x2ba/0x719 [ 51.190546][ T3607] ? nilfs_segctor_confirm+0x175/0x190 [ 51.196079][ T3607] kasan_report+0xb1/0x1e0 [ 51.200486][ T3607] ? nilfs_segctor_confirm+0x175/0x190 [ 51.205952][ T3607] nilfs_segctor_confirm+0x175/0x190 [ 51.211223][ T3607] nilfs_detach_log_writer+0x856/0x9f0 [ 51.216672][ T3607] ? nilfs_clean_segments+0xa80/0xa80 [ 51.222034][ T3607] ? collect_domain_accesses+0xbf0/0xbf0 [ 51.227653][ T3607] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 51.233449][ T3607] ? dispose_list+0x1e0/0x1e0 [ 51.238118][ T3607] nilfs_put_super+0x3f/0x1a0 [ 51.242809][ T3607] ? nilfs_freeze+0xc0/0xc0 [ 51.247298][ T3607] generic_shutdown_super+0x154/0x410 [ 51.252659][ T3607] kill_block_super+0x97/0xf0 [ 51.257321][ T3607] deactivate_locked_super+0x94/0x160 [ 51.262706][ T3607] deactivate_super+0xad/0xd0 [ 51.267368][ T3607] cleanup_mnt+0x2ae/0x3d0 [ 51.271773][ T3607] task_work_run+0xdd/0x1a0 [ 51.276263][ T3607] do_exit+0xad5/0x29b0 [ 51.280405][ T3607] ? mm_update_next_owner+0x7a0/0x7a0 [ 51.285763][ T3607] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.290972][ T3607] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.296159][ T3607] do_group_exit+0xd2/0x2f0 [ 51.300672][ T3607] __x64_sys_exit_group+0x3a/0x50 [ 51.305684][ T3607] do_syscall_64+0x35/0xb0 [ 51.310079][ T3607] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.315963][ T3607] RIP: 0033:0x7f6278a57bc9 [ 51.320354][ T3607] Code: Unable to access opcode bytes at 0x7f6278a57b9f. [ 51.327348][ T3607] RSP: 002b:00007fffff1e8ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 51.335742][ T3607] RAX: ffffffffffffffda RBX: 00007f6278acf330 RCX: 00007f6278a57bc9 [ 51.343693][ T3607] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 51.351644][ T3607] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f6278ac9e40 [ 51.359619][ T3607] R10: 00007f6278ac9e40 R11: 0000000000000246 R12: 00007f6278acf330 [ 51.367569][ T3607] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 51.375528][ T3607] [ 51.378526][ T3607] [ 51.380826][ T3607] Allocated by task 3607: [ 51.385131][ T3607] kasan_save_stack+0x1e/0x40 [ 51.389802][ T3607] __kasan_kmalloc+0xa9/0xd0 [ 51.394369][ T3607] nilfs_find_or_create_root+0x84/0x4d0 [ 51.399898][ T3607] nilfs_attach_checkpoint+0xc1/0x4b0 [ 51.405255][ T3607] nilfs_mount+0xb12/0xfb0 [ 51.409652][ T3607] legacy_get_tree+0x105/0x220 [ 51.414400][ T3607] vfs_get_tree+0x89/0x2f0 [ 51.418800][ T3607] path_mount+0x1326/0x1e20 [ 51.423286][ T3607] __x64_sys_mount+0x27f/0x300 [ 51.428034][ T3607] do_syscall_64+0x35/0xb0 [ 51.432428][ T3607] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.438485][ T3607] [ 51.440808][ T3607] Freed by task 3607: [ 51.444765][ T3607] kasan_save_stack+0x1e/0x40 [ 51.449423][ T3607] kasan_set_track+0x21/0x30 [ 51.453991][ T3607] kasan_set_free_info+0x20/0x30 [ 51.458917][ T3607] ____kasan_slab_free+0x166/0x1c0 [ 51.464100][ T3607] slab_free_freelist_hook+0x8b/0x1c0 [ 51.469456][ T3607] kfree+0xe2/0x580 [ 51.473241][ T3607] nilfs_put_root+0xb1/0xd0 [ 51.477754][ T3607] nilfs_clear_inode+0x29a/0x330 [ 51.482672][ T3607] nilfs_evict_inode+0x318/0x440 [ 51.487595][ T3607] evict+0x2ed/0x6b0 [ 51.491477][ T3607] dispose_list+0x117/0x1e0 [ 51.495965][ T3607] evict_inodes+0x352/0x450 [ 51.500452][ T3607] generic_shutdown_super+0xab/0x410 [ 51.505722][ T3607] kill_block_super+0x97/0xf0 [ 51.510382][ T3607] deactivate_locked_super+0x94/0x160 [ 51.515822][ T3607] deactivate_super+0xad/0xd0 [ 51.520633][ T3607] cleanup_mnt+0x2ae/0x3d0 [ 51.525031][ T3607] task_work_run+0xdd/0x1a0 [ 51.529604][ T3607] do_exit+0xad5/0x29b0 [ 51.533742][ T3607] do_group_exit+0xd2/0x2f0 [ 51.538231][ T3607] __x64_sys_exit_group+0x3a/0x50 [ 51.543240][ T3607] do_syscall_64+0x35/0xb0 [ 51.547636][ T3607] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.553521][ T3607] [ 51.555824][ T3607] The buggy address belongs to the object at ffff88801e189e00 [ 51.555824][ T3607] which belongs to the cache kmalloc-256 of size 256 [ 51.569877][ T3607] The buggy address is located 48 bytes inside of [ 51.569877][ T3607] 256-byte region [ffff88801e189e00, ffff88801e189f00) [ 51.583044][ T3607] [ 51.585353][ T3607] The buggy address belongs to the physical page: [ 51.591738][ T3607] page:ffffea0000786200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e188 [ 51.601869][ T3607] head:ffffea0000786200 order:1 compound_mapcount:0 compound_pincount:0 [ 51.610169][ T3607] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 51.618133][ T3607] raw: 00fff00000010200 ffffea000074e380 dead000000000003 ffff888011841b40 [ 51.626698][ T3607] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 51.635270][ T3607] page dumped because: kasan: bad access detected [ 51.641868][ T3607] page_owner tracks the page as allocated [ 51.647644][ T3607] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 38, tgid 38 (kworker/u4:2), ts 6566773010, free_ts 0 [ 51.667680][ T3607] get_page_from_freelist+0x109b/0x2ce0 [ 51.673220][ T3607] __alloc_pages+0x1c7/0x510 [ 51.677798][ T3607] alloc_pages+0x1a6/0x270 [ 51.682214][ T3607] allocate_slab+0x27e/0x3d0 [ 51.686785][ T3607] ___slab_alloc+0x84f/0xe80 [ 51.691442][ T3607] __slab_alloc.constprop.0+0x4d/0xa0 [ 51.696907][ T3607] kmem_cache_alloc_trace+0x323/0x3e0 [ 51.702333][ T3607] scsi_probe_and_add_lun+0x3ae/0x3650 [ 51.707771][ T3607] __scsi_scan_target+0x21f/0xdb0 [ 51.712771][ T3607] scsi_scan_channel+0x148/0x1e0 [ 51.717687][ T3607] scsi_scan_host_selected+0x2df/0x3b0 [ 51.723122][ T3607] do_scsi_scan_host+0x1e8/0x260 [ 51.728037][ T3607] do_scan_async+0x3e/0x500 [ 51.732520][ T3607] async_run_entry_fn+0x98/0x530 [ 51.737442][ T3607] process_one_work+0x991/0x1610 [ 51.742360][ T3607] worker_thread+0x665/0x1080 [ 51.747018][ T3607] page_owner free stack trace missing [ 51.752377][ T3607] [ 51.754676][ T3607] Memory state around the buggy address: [ 51.760291][ T3607] ffff88801e189d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.768353][ T3607] ffff88801e189d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.776391][ T3607] >ffff88801e189e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.784424][ T3607] ^ [ 51.790028][ T3607] ffff88801e189e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.798066][ T3607] ffff88801e189f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 51.806105][ T3607] ================================================================== [ 51.816509][ T3607] Kernel panic - not syncing: panic_on_warn set ... [ 51.823106][ T3607] CPU: 1 PID: 3607 Comm: syz-executor215 Not tainted 6.0.0-syzkaller-05118-g833477fce7a1 #0 [ 51.833161][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 51.843203][ T3607] Call Trace: [ 51.846470][ T3607] [ 51.849394][ T3607] dump_stack_lvl+0xcd/0x134 [ 51.854006][ T3607] panic+0x2c8/0x627 [ 51.857913][ T3607] ? panic_print_sys_info.part.0+0x10b/0x10b [ 51.863888][ T3607] ? preempt_schedule_common+0x59/0xc0 [ 51.869342][ T3607] ? preempt_schedule_thunk+0x16/0x18 [ 51.874721][ T3607] ? nilfs_segctor_confirm+0x175/0x190 [ 51.880180][ T3607] end_report.part.0+0x3f/0x7c [ 51.884939][ T3607] kasan_report.cold+0xa/0xf [ 51.889531][ T3607] ? nilfs_segctor_confirm+0x175/0x190 [ 51.895080][ T3607] nilfs_segctor_confirm+0x175/0x190 [ 51.900371][ T3607] nilfs_detach_log_writer+0x856/0x9f0 [ 51.905834][ T3607] ? nilfs_clean_segments+0xa80/0xa80 [ 51.911209][ T3607] ? collect_domain_accesses+0xbf0/0xbf0 [ 51.917011][ T3607] ? prepare_to_wait_exclusive+0x2b0/0x2b0 [ 51.922811][ T3607] ? dispose_list+0x1e0/0x1e0 [ 51.927494][ T3607] nilfs_put_super+0x3f/0x1a0 [ 51.932172][ T3607] ? nilfs_freeze+0xc0/0xc0 [ 51.936676][ T3607] generic_shutdown_super+0x154/0x410 [ 51.942051][ T3607] kill_block_super+0x97/0xf0 [ 51.946727][ T3607] deactivate_locked_super+0x94/0x160 [ 51.952098][ T3607] deactivate_super+0xad/0xd0 [ 51.956775][ T3607] cleanup_mnt+0x2ae/0x3d0 [ 51.961195][ T3607] task_work_run+0xdd/0x1a0 [ 51.965702][ T3607] do_exit+0xad5/0x29b0 [ 51.969865][ T3607] ? mm_update_next_owner+0x7a0/0x7a0 [ 51.975238][ T3607] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.980435][ T3607] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.985634][ T3607] do_group_exit+0xd2/0x2f0 [ 51.990140][ T3607] __x64_sys_exit_group+0x3a/0x50 [ 51.995164][ T3607] do_syscall_64+0x35/0xb0 [ 51.999574][ T3607] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 52.005476][ T3607] RIP: 0033:0x7f6278a57bc9 [ 52.009879][ T3607] Code: Unable to access opcode bytes at 0x7f6278a57b9f. [ 52.016891][ T3607] RSP: 002b:00007fffff1e8ca8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 52.025307][ T3607] RAX: ffffffffffffffda RBX: 00007f6278acf330 RCX: 00007f6278a57bc9 [ 52.033268][ T3607] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 52.041237][ T3607] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f6278ac9e40 [ 52.049204][ T3607] R10: 00007f6278ac9e40 R11: 0000000000000246 R12: 00007f6278acf330 [ 52.057165][ T3607] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 52.065135][ T3607] [ 52.068706][ T3607] Kernel Offset: disabled [ 52.073028][ T3607] Rebooting in 86400 seconds..