./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1079659047 <...> Warning: Permanently added '10.128.1.39' (ED25519) to the list of known hosts. execve("./syz-executor1079659047", ["./syz-executor1079659047"], 0x7fff674e1de0 /* 10 vars */) = 0 brk(NULL) = 0x55555687e000 brk(0x55555687ed00) = 0x55555687ed00 arch_prctl(ARCH_SET_FS, 0x55555687e380) = 0 set_tid_address(0x55555687e650) = 5052 set_robust_list(0x55555687e660, 24) = 0 rseq(0x55555687eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1079659047", 4096) = 28 getrandom("\xad\x4a\xb5\x3c\xb4\xb0\xe1\xbc", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555687ed00 brk(0x55555689fd00) = 0x55555689fd00 brk(0x5555568a0000) = 0x5555568a0000 mprotect(0x7f2ec73b9000, 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 5053 attached , child_tidptr=0x55555687e650) = 5053 [pid 5053] set_robust_list(0x55555687e660, 24) = 0 [pid 5053] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5053] setsid() = 1 [pid 5053] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5053] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5053] unshare(CLONE_NEWNS) = 0 [pid 5053] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5053] unshare(CLONE_NEWIPC) = 0 [pid 5053] unshare(CLONE_NEWCGROUP) = 0 [pid 5053] unshare(CLONE_NEWUTS) = 0 [pid 5053] unshare(CLONE_SYSVSEM) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "16777216", 8) = 8 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "536870912", 9) = 9 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "8192", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024", 4) = 4 [pid 5053] close(3) = 0 [pid 5053] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5053] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5053] close(3) = 0 [pid 5053] getpid() = 1 [pid 5053] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 55.299613][ T42] dump_stack_lvl+0x1e7/0x2e0 [ 55.304284][ T42] ? __pfx_dump_stack_lvl+0x10/0x10 [ 55.309461][ T42] ? __pfx__printk+0x10/0x10 [ 55.314045][ T42] ? _printk+0xd5/0x120 [ 55.318189][ T42] ? __virt_addr_valid+0x183/0x520 [ 55.323281][ T42] ? __virt_addr_valid+0x183/0x520 [ 55.328377][ T42] print_report+0x167/0x540 [ 55.332862][ T42] ? __virt_addr_valid+0x183/0x520 [ 55.337974][ T42] ? __virt_addr_valid+0x183/0x520 [ 55.343067][ T42] ? __virt_addr_valid+0x44e/0x520 [ 55.348173][ T42] ? __phys_addr+0xba/0x170 [ 55.352660][ T42] ? copy_page_from_iter_atomic+0x953/0x1db0 [ 55.358625][ T42] kasan_report+0x142/0x180 [ 55.363109][ T42] ? copy_page_from_iter_atomic+0x953/0x1db0 [ 55.369076][ T42] kasan_check_range+0x282/0x290 [ 55.374001][ T42] ? copy_page_from_iter_atomic+0x953/0x1db0 [ 55.379963][ T42] __asan_memcpy+0x29/0x70 [ 55.384360][ T42] copy_page_from_iter_atomic+0x953/0x1db0 [ 55.390153][ T42] ? __pfx_copy_page_from_iter_atomic+0x10/0x10 [ 55.396383][ T42] ? shmem_write_begin+0x23f/0x4d0 [ 55.401481][ T42] ? __pfx_shmem_write_begin+0x10/0x10 [ 55.406922][ T42] ? fault_in_iov_iter_readable+0x236/0x280 [ 55.412796][ T42] generic_perform_write+0x39a/0x640 [ 55.418066][ T42] ? __pfx_generic_perform_write+0x10/0x10 [ 55.423857][ T42] ? preempt_count_add+0x93/0x190 [ 55.428864][ T42] ? mnt_put_write_access_file+0xbb/0x100 [ 55.434568][ T42] ? file_update_time+0x3ac/0x3e0 [ 55.439572][ T42] shmem_file_write_iter+0xfc/0x120 [ 55.444752][ T42] do_iter_readv_writev+0x46c/0x640 [ 55.449929][ T42] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 55.455626][ T42] ? rcu_read_lock_any_held+0xb7/0x160 [ 55.461071][ T42] vfs_iter_write+0x244/0x5d0 [ 55.465730][ T42] loop_process_work+0x13a2/0x1e60 [ 55.470818][ T42] ? mark_lock+0x9a/0x350 [ 55.475132][ T42] ? __pfx_loop_process_work+0x10/0x10 [ 55.480567][ T42] ? __pfx_lock_acquire+0x10/0x10 [ 55.485572][ T42] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 55.491882][ T42] ? process_scheduled_works+0x825/0x1420 [ 55.497588][ T42] process_scheduled_works+0x913/0x1420 [ 55.503124][ T42] ? __pfx_process_scheduled_works+0x10/0x10 [ 55.509087][ T42] ? assign_work+0x364/0x3d0 [ 55.513669][ T42] worker_thread+0xa5f/0x1000 [ 55.518347][ T42] ? __pfx_worker_thread+0x10/0x10 [ 55.523455][ T42] kthread+0x2ef/0x390 [ 55.527504][ T42] ? __pfx_worker_thread+0x10/0x10 [ 55.532607][ T42] ? __pfx_kthread+0x10/0x10 [ 55.537176][ T42] ret_from_fork+0x4b/0x80 [ 55.541587][ T42] ? __pfx_kthread+0x10/0x10 [ 55.546156][ T42] ret_from_fork_asm+0x1b/0x30 [ 55.550904][ T42] [ 55.553910][ T42] [ 55.556220][ T42] Allocated by task 5053: [ 55.560520][ T42] kasan_save_track+0x3f/0x80 [ 55.565176][ T42] __kasan_kmalloc+0x98/0xb0 [ 55.569831][ T42] __kmalloc+0x22e/0x490 [ 55.574056][ T42] hfsplus_read_wrapper+0x545/0x1340 [ 55.579319][ T42] hfsplus_fill_super+0x38e/0x1ca0 [ 55.584419][ T42] mount_bdev+0x20a/0x2d0 [ 55.588812][ T42] legacy_get_tree+0xee/0x190 [ 55.593466][ T42] vfs_get_tree+0x90/0x2a0 [ 55.597863][ T42] do_new_mount+0x2be/0xb40 [ 55.602347][ T42] __se_sys_mount+0x2d9/0x3c0 [ 55.607000][ T42] do_syscall_64+0xf9/0x240 [ 55.611478][ T42] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 55.617354][ T42] [ 55.619657][ T42] The buggy address belongs to the object at ffff88802a8e2800 [ 55.619657][ T42] which belongs to the cache kmalloc-512 of size 512 [ 55.633694][ T42] The buggy address is located 0 bytes inside of [ 55.633694][ T42] allocated 512-byte region [ffff88802a8e2800, ffff88802a8e2a00) [ 55.647653][ T42] [ 55.649954][ T42] The buggy address belongs to the physical page: [ 55.656357][ T42] page:ffffea0000aa3800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a8e0 [ 55.666485][ T42] head:ffffea0000aa3800 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 55.675393][ T42] anon flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 55.683800][ T42] page_type: 0xffffffff() [ 55.688106][ T42] raw: 00fff00000000840 ffff888014c41c80 0000000000000000 dead000000000001 [ 55.696668][ T42] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 55.705239][ T42] page dumped because: kasan: bad access detected [ 55.711631][ T42] page_owner tracks the page as allocated [ 55.717342][ T42] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4511, tgid 4511 (udevd), ts 21854996573, free_ts 21036950611 [ 55.738083][ T42] post_alloc_hook+0x1ea/0x210 [ 55.742833][ T42] get_page_from_freelist+0x33ea/0x3580 [ 55.748363][ T42] __alloc_pages+0x255/0x680 [ 55.752935][ T42] alloc_slab_page+0x5f/0x160 [ 55.757606][ T42] new_slab+0x84/0x2f0 [ 55.761651][ T42] ___slab_alloc+0xd17/0x13e0 [ 55.766307][ T42] kmalloc_trace+0x264/0x360 [ 55.770883][ T42] kernfs_fop_open+0x3e7/0xcd0 [ 55.775624][ T42] do_dentry_open+0x907/0x15a0 [ 55.780643][ T42] path_openat+0x285f/0x3240 [ 55.785210][ T42] do_filp_open+0x234/0x490 [ 55.789695][ T42] do_sys_openat2+0x13e/0x1d0 [ 55.794358][ T42] __x64_sys_openat+0x247/0x2a0 [ 55.799193][ T42] do_syscall_64+0xf9/0x240 [ 55.803692][ T42] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 55.809568][ T42] page last free pid 4516 tgid 4516 stack trace: [ 55.815868][ T42] free_unref_page_prepare+0x95d/0xa80 [ 55.821313][ T42] free_unref_page+0x37/0x3f0 [ 55.825970][ T42] __put_partials+0xeb/0x130 [ 55.830537][ T42] put_cpu_partial+0x17b/0x250 [ 55.835282][ T42] __slab_free+0x302/0x410 [ 55.839677][ T42] qlist_free_all+0x5e/0xc0 [ 55.844160][ T42] kasan_quarantine_reduce+0x14f/0x170 [ 55.849597][ T42] __kasan_slab_alloc+0x23/0x80 [ 55.854427][ T42] __kmalloc+0x1dd/0x490 [ 55.858652][ T42] tomoyo_realpath_from_path+0xcf/0x5e0 [ 55.864185][ T42] tomoyo_path_perm+0x2b7/0x740 [ 55.869026][ T42] security_inode_getattr+0xd8/0x130 [ 55.874292][ T42] vfs_getattr+0x45/0x430 [ 55.878605][ T42] vfs_statx+0x1a5/0x4e0 [ 55.882829][ T42] vfs_fstatat+0x135/0x190 [ 55.887229][ T42] __x64_sys_newfstatat+0x117/0x190 [ 55.892412][ T42] [ 55.894718][ T42] Memory state around the buggy address: [ 55.900322][ T42] ffff88802a8e2900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 55.908360][ T42] ffff88802a8e2980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 55.916400][ T42] >ffff88802a8e2a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 55.924434][ T42] ^ [ 55.928476][ T42] ffff88802a8e2a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 55.936511][ T42] ffff88802a8e2b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 55.944552][ T42] ================================================================== [ 55.952740][ T42] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 55.959930][ T42] CPU: 0 PID: 42 Comm: kworker/u4:2 Not tainted 6.8.0-rc7-syzkaller-00231-g09e5c48fea17 #0 [ 55.969891][ T42] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 55.979929][ T42] Workqueue: loop0 loop_rootcg_workfn [ 55.985295][ T42] Call Trace: [ 55.988574][ T42] [ 55.991495][ T42] dump_stack_lvl+0x1e7/0x2e0 [ 55.996171][ T42] ? __pfx_dump_stack_lvl+0x10/0x10 [ 56.001352][ T42] ? __pfx__printk+0x10/0x10 [ 56.005931][ T42] ? vscnprintf+0x5d/0x90 [ 56.010248][ T42] panic+0x349/0x860 [ 56.014136][ T42] ? check_panic_on_warn+0x21/0xb0 [ 56.019235][ T42] ? __pfx_panic+0x10/0x10 [ 56.023639][ T42] ? mark_lock+0x9a/0x350 [ 56.027960][ T42] ? _raw_spin_unlock_irqrestore+0xd8/0x140 [ 56.033852][ T42] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 56.039732][ T42] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 56.046044][ T42] ? print_report+0x4ff/0x540 [ 56.050708][ T42] check_panic_on_warn+0x86/0xb0 [ 56.055631][ T42] ? copy_page_from_iter_atomic+0x953/0x1db0 [ 56.061600][ T42] end_report+0x6e/0x140 [ 56.065827][ T42] kasan_report+0x153/0x180 [ 56.070347][ T42] ? copy_page_from_iter_atomic+0x953/0x1db0 [ 56.076319][ T42] kasan_check_range+0x282/0x290 [ 56.081244][ T42] ? copy_page_from_iter_atomic+0x953/0x1db0 [ 56.087214][ T42] __asan_memcpy+0x29/0x70 [ 56.091618][ T42] copy_page_from_iter_atomic+0x953/0x1db0 [ 56.097416][ T42] ? __pfx_copy_page_from_iter_atomic+0x10/0x10 [ 56.103649][ T42] ? shmem_write_begin+0x23f/0x4d0 [ 56.108747][ T42] ? __pfx_shmem_write_begin+0x10/0x10 [ 56.114192][ T42] ? fault_in_iov_iter_readable+0x236/0x280 [ 56.120072][ T42] generic_perform_write+0x39a/0x640 [ 56.125355][ T42] ? __pfx_generic_perform_write+0x10/0x10 [ 56.131148][ T42] ? preempt_count_add+0x93/0x190 [ 56.136163][ T42] ? mnt_put_write_access_file+0xbb/0x100 [ 56.141958][ T42] ? file_update_time+0x3ac/0x3e0 [ 56.146971][ T42] shmem_file_write_iter+0xfc/0x120 [ 56.152166][ T42] do_iter_readv_writev+0x46c/0x640 [ 56.157376][ T42] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 56.163079][ T42] ? rcu_read_lock_any_held+0xb7/0x160 [ 56.168534][ T42] vfs_iter_write+0x244/0x5d0 [ 56.173195][ T42] loop_process_work+0x13a2/0x1e60 [ 56.178288][ T42] ? mark_lock+0x9a/0x350 [ 56.182608][ T42] ? __pfx_loop_process_work+0x10/0x10 [ 56.188053][ T42] ? __pfx_lock_acquire+0x10/0x10 [ 56.193066][ T42] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 56.199476][ T42] ? process_scheduled_works+0x825/0x1420 [ 56.205183][ T42] process_scheduled_works+0x913/0x1420 [ 56.210724][ T42] ? __pfx_process_scheduled_works+0x10/0x10 [ 56.216694][ T42] ? assign_work+0x364/0x3d0 [ 56.221275][ T42] worker_thread+0xa5f/0x1000 [ 56.225950][ T42] ? __pfx_worker_thread+0x10/0x10 [ 56.231049][ T42] kthread+0x2ef/0x390 [ 56.235104][ T42] ? __pfx_worker_thread+0x10/0x10 [ 56.240204][ T42] ? __pfx_kthread+0x10/0x10 [ 56.244780][ T42] ret_from_fork+0x4b/0x80 [ 56.249214][ T42] ? __pfx_kthread+0x10/0x10 [ 56.253791][ T42] ret_from_fork_asm+0x1b/0x30 [ 56.258557][ T42] [ 56.261819][ T42] Kernel Offset: disabled [ 56.266125][ T42] Rebooting in 86400 seconds..