./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4074306549 <...> Warning: Permanently added '10.128.1.148' (ED25519) to the list of known hosts. execve("./syz-executor4074306549", ["./syz-executor4074306549"], 0x7ffee84c2780 /* 10 vars */) = 0 brk(NULL) = 0x555557267000 brk(0x555557267d00) = 0x555557267d00 arch_prctl(ARCH_SET_FS, 0x555557267380) = 0 set_tid_address(0x555557267650) = 5017 set_robust_list(0x555557267660, 24) = 0 rseq(0x555557267ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4074306549", 4096) = 28 getrandom("\xa7\x17\x9c\x2f\x64\xb9\x6d\xaf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557267d00 brk(0x555557288d00) = 0x555557288d00 brk(0x555557289000) = 0x555557289000 mprotect(0x7f96bc5b8000, 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, child_tidptr=0x555557267650) = 5018 ./strace-static-x86_64: Process 5018 attached [pid 5018] set_robust_list(0x555557267660, 24) = 0 [pid 5018] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5018] setsid() = 1 [pid 5018] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5018] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5018] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5018] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5018] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5018] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5018] unshare(CLONE_NEWNS) = 0 [pid 5018] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5018] unshare(CLONE_NEWIPC) = 0 [pid 5018] unshare(CLONE_NEWCGROUP) = 0 [pid 5018] unshare(CLONE_NEWUTS) = 0 [pid 5018] unshare(CLONE_SYSVSEM) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "16777216", 8) = 8 [pid 5018] close(3) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "536870912", 9) = 9 [pid 5018] close(3) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "1024", 4) = 4 [pid 5018] close(3) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "8192", 4) = 4 [pid 5018] close(3) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "1024", 4) = 4 [pid 5018] close(3) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "1024", 4) = 4 [pid 5018] close(3) = 0 [pid 5018] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5018] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5018] close(3) = 0 [pid 5018] getpid() = 1 [pid 5018] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 64.351564][ T76] dump_stack_lvl+0x1e7/0x2d0 [ 64.356250][ T76] ? irq_work_queue+0xca/0x150 [ 64.361019][ T76] ? nf_tcp_handle_invalid+0x650/0x650 [ 64.366483][ T76] ? panic+0x770/0x770 [ 64.370552][ T76] ? _printk+0xd5/0x120 [ 64.374710][ T76] print_report+0x163/0x540 [ 64.379234][ T76] ? __virt_addr_valid+0x22f/0x2e0 [ 64.384366][ T76] ? __phys_addr+0xba/0x170 [ 64.388956][ T76] ? copy_page_from_iter_atomic+0x93b/0x1310 [ 64.394942][ T76] kasan_report+0x175/0x1b0 [ 64.399446][ T76] ? copy_page_from_iter_atomic+0x93b/0x1310 [ 64.405431][ T76] kasan_check_range+0x27e/0x290 [ 64.410370][ T76] ? copy_page_from_iter_atomic+0x93b/0x1310 [ 64.416350][ T76] __asan_memcpy+0x29/0x70 [ 64.420769][ T76] copy_page_from_iter_atomic+0x93b/0x1310 [ 64.426583][ T76] ? iov_iter_zero+0xf40/0xf40 [ 64.431346][ T76] ? shmem_write_begin+0x25a/0x4e0 [ 64.436463][ T76] ? shmem_writepage+0x1e10/0x1e10 [ 64.441581][ T76] ? fault_in_iov_iter_readable+0x232/0x280 [ 64.447479][ T76] generic_perform_write+0x392/0x630 [ 64.452791][ T76] ? generic_file_direct_write+0x3f0/0x3f0 [ 64.458633][ T76] ? generic_write_checks_count+0x490/0x490 [ 64.464544][ T76] ? __generic_file_write_iter+0x101/0x230 [ 64.470441][ T76] generic_file_write_iter+0xaf/0x310 [ 64.475821][ T76] do_iter_write+0x84f/0xde0 [ 64.480421][ T76] ? vfs_iter_write+0xa0/0xa0 [ 64.485103][ T76] ? rcu_read_lock_bh_held+0x120/0x120 [ 64.490588][ T76] ? vfs_iter_write+0x70/0xa0 [ 64.495265][ T76] loop_process_work+0x144b/0x2220 [ 64.500388][ T76] ? loop_workfn+0x50/0x50 [ 64.504804][ T76] ? read_lock_is_recursive+0x20/0x20 [ 64.510181][ T76] ? print_irqtrace_events+0x220/0x220 [ 64.515638][ T76] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 64.521556][ T76] process_one_work+0x92c/0x12c0 [ 64.526518][ T76] ? worker_detach_from_pool+0x290/0x290 [ 64.532157][ T76] ? _raw_spin_lock_irqsave+0x120/0x120 [ 64.537706][ T76] ? wq_worker_running+0xa1/0x200 [ 64.542728][ T76] worker_thread+0xa63/0x1210 [ 64.547409][ T76] ? _raw_spin_unlock+0x40/0x40 [ 64.552258][ T76] kthread+0x2b8/0x350 [ 64.556323][ T76] ? pr_cont_work+0x5e0/0x5e0 [ 64.560996][ T76] ? kthread_blkcg+0xd0/0xd0 [ 64.565585][ T76] ret_from_fork+0x1f/0x30 [ 64.570007][ T76] [ 64.573018][ T76] [ 64.575332][ T76] Allocated by task 5018: [ 64.579647][ T76] kasan_set_track+0x4f/0x70 [ 64.584232][ T76] __kasan_kmalloc+0x98/0xb0 [ 64.588823][ T76] __kmalloc+0xb9/0x230 [ 64.592969][ T76] hfsplus_read_wrapper+0x545/0x1330 [ 64.598277][ T76] hfsplus_fill_super+0x38e/0x1c90 [ 64.603386][ T76] mount_bdev+0x276/0x3b0 [ 64.607729][ T76] legacy_get_tree+0xef/0x190 [ 64.612420][ T76] vfs_get_tree+0x8c/0x270 [ 64.616829][ T76] do_new_mount+0x28f/0xae0 [ 64.621330][ T76] __se_sys_mount+0x2d9/0x3c0 [ 64.626001][ T76] do_syscall_64+0x41/0xc0 [ 64.630411][ T76] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.636306][ T76] [ 64.638625][ T76] The buggy address belongs to the object at ffff88801fde7800 [ 64.638625][ T76] which belongs to the cache kmalloc-512 of size 512 [ 64.652673][ T76] The buggy address is located 0 bytes inside of [ 64.652673][ T76] allocated 512-byte region [ffff88801fde7800, ffff88801fde7a00) [ 64.666652][ T76] [ 64.668973][ T76] The buggy address belongs to the physical page: [ 64.675375][ T76] page:ffffea00007f7900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1fde4 [ 64.685519][ T76] head:ffffea00007f7900 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 64.694465][ T76] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 64.702436][ T76] page_type: 0xffffffff() [ 64.706783][ T76] raw: 00fff00000010200 ffff888012841c80 ffffea000058b700 dead000000000002 [ 64.715362][ T76] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 64.723933][ T76] page dumped because: kasan: bad access detected [ 64.730335][ T76] page_owner tracks the page as allocated [ 64.736041][ T76] page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 9172508640, free_ts 9172345967 [ 64.756441][ T76] post_alloc_hook+0x1e6/0x210 [ 64.761203][ T76] get_page_from_freelist+0x31e8/0x3370 [ 64.766746][ T76] __alloc_pages+0x255/0x670 [ 64.771333][ T76] alloc_page_interleave+0x22/0x1d0 [ 64.776632][ T76] alloc_slab_page+0x6a/0x160 [ 64.781306][ T76] new_slab+0x84/0x2f0 [ 64.785377][ T76] ___slab_alloc+0xade/0x1100 [ 64.790057][ T76] __kmem_cache_alloc_node+0x1af/0x270 [ 64.795518][ T76] kmalloc_trace+0x2a/0xe0 [ 64.799932][ T76] device_add+0xc1/0xf60 [ 64.804181][ T76] netdev_register_kobject+0x17a/0x310 [ 64.809649][ T76] register_netdevice+0x1066/0x1790 [ 64.814873][ T76] ifb_init_one+0x70/0xb0 [ 64.819215][ T76] ifb_init_module+0x6c/0x110 [ 64.823902][ T76] do_one_initcall+0x23d/0x7d0 [ 64.828665][ T76] do_initcall_level+0x157/0x210 [ 64.833688][ T76] page last free stack trace: [ 64.838358][ T76] free_unref_page_prepare+0x903/0xa30 [ 64.843818][ T76] free_unref_page+0x37/0x3f0 [ 64.848491][ T76] __stack_depot_save+0x4ef/0x650 [ 64.853524][ T76] kasan_set_track+0x61/0x70 [ 64.858113][ T76] __kasan_kmalloc+0x98/0xb0 [ 64.862698][ T76] __kmalloc_node+0xb8/0x230 [ 64.867303][ T76] kvmalloc_node+0x72/0x180 [ 64.871818][ T76] alloc_netdev_mqs+0x8d/0xf40 [ 64.876584][ T76] ifb_init_one+0x2f/0xb0 [ 64.880958][ T76] ifb_init_module+0x6c/0x110 [ 64.885645][ T76] do_one_initcall+0x23d/0x7d0 [ 64.890418][ T76] do_initcall_level+0x157/0x210 [ 64.895361][ T76] do_initcalls+0x3f/0x80 [ 64.899691][ T76] kernel_init_freeable+0x43b/0x5d0 [ 64.904885][ T76] kernel_init+0x1d/0x2a0 [ 64.909239][ T76] ret_from_fork+0x1f/0x30 [ 64.913655][ T76] [ 64.915971][ T76] Memory state around the buggy address: [ 64.921610][ T76] ffff88801fde7900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 64.929664][ T76] ffff88801fde7980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 64.937717][ T76] >ffff88801fde7a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 64.945766][ T76] ^ [ 64.949841][ T76] ffff88801fde7a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 64.957926][ T76] ffff88801fde7b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 64.965986][ T76] ================================================================== [ 64.974422][ T76] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 64.981644][ T76] CPU: 1 PID: 76 Comm: kworker/u4:4 Not tainted 6.5.0-rc1-syzkaller-00152-g4b810bf037e5 #0 [ 64.991641][ T76] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 [ 65.001699][ T76] Workqueue: loop0 loop_rootcg_workfn [ 65.007166][ T76] Call Trace: [ 65.010448][ T76] [ 65.013397][ T76] dump_stack_lvl+0x1e7/0x2d0 [ 65.018099][ T76] ? nf_tcp_handle_invalid+0x650/0x650 [ 65.023646][ T76] ? panic+0x770/0x770 [ 65.027729][ T76] ? lock_release+0xbf/0x9d0 [ 65.032330][ T76] ? vscnprintf+0x5d/0x80 [ 65.036665][ T76] panic+0x30f/0x770 [ 65.040564][ T76] ? check_panic_on_warn+0x21/0xa0 [ 65.045689][ T76] ? __memcpy_flushcache+0x2b0/0x2b0 [ 65.050980][ T76] ? _raw_spin_unlock_irqrestore+0xd8/0x140 [ 65.056875][ T76] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 65.062774][ T76] ? _raw_spin_unlock+0x40/0x40 [ 65.067625][ T76] ? print_report+0x4fb/0x540 [ 65.072306][ T76] check_panic_on_warn+0x82/0xa0 [ 65.077249][ T76] ? copy_page_from_iter_atomic+0x93b/0x1310 [ 65.083242][ T76] end_report+0x6e/0x130 [ 65.087493][ T76] kasan_report+0x186/0x1b0 [ 65.092010][ T76] ? copy_page_from_iter_atomic+0x93b/0x1310 [ 65.098006][ T76] kasan_check_range+0x27e/0x290 [ 65.102950][ T76] ? copy_page_from_iter_atomic+0x93b/0x1310 [ 65.108944][ T76] __asan_memcpy+0x29/0x70 [ 65.113386][ T76] copy_page_from_iter_atomic+0x93b/0x1310 [ 65.119212][ T76] ? iov_iter_zero+0xf40/0xf40 [ 65.123982][ T76] ? shmem_write_begin+0x25a/0x4e0 [ 65.129105][ T76] ? shmem_writepage+0x1e10/0x1e10 [ 65.134250][ T76] ? fault_in_iov_iter_readable+0x232/0x280 [ 65.140174][ T76] generic_perform_write+0x392/0x630 [ 65.145496][ T76] ? generic_file_direct_write+0x3f0/0x3f0 [ 65.151319][ T76] ? generic_write_checks_count+0x490/0x490 [ 65.157223][ T76] ? __generic_file_write_iter+0x101/0x230 [ 65.163041][ T76] generic_file_write_iter+0xaf/0x310 [ 65.168433][ T76] do_iter_write+0x84f/0xde0 [ 65.173038][ T76] ? vfs_iter_write+0xa0/0xa0 [ 65.177730][ T76] ? rcu_read_lock_bh_held+0x120/0x120 [ 65.183220][ T76] ? vfs_iter_write+0x70/0xa0 [ 65.187912][ T76] loop_process_work+0x144b/0x2220 [ 65.193044][ T76] ? loop_workfn+0x50/0x50 [ 65.198180][ T76] ? read_lock_is_recursive+0x20/0x20 [ 65.203565][ T76] ? print_irqtrace_events+0x220/0x220 [ 65.209037][ T76] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 65.214950][ T76] process_one_work+0x92c/0x12c0 [ 65.219932][ T76] ? worker_detach_from_pool+0x290/0x290 [ 65.225578][ T76] ? _raw_spin_lock_irqsave+0x120/0x120 [ 65.231133][ T76] ? wq_worker_running+0xa1/0x200 [ 65.236165][ T76] worker_thread+0xa63/0x1210 [ 65.240857][ T76] ? _raw_spin_unlock+0x40/0x40 [ 65.245720][ T76] kthread+0x2b8/0x350 [ 65.249801][ T76] ? pr_cont_work+0x5e0/0x5e0 [ 65.254486][ T76] ? kthread_blkcg+0xd0/0xd0 [ 65.259080][ T76] ret_from_fork+0x1f/0x30 [ 65.263513][ T76] [ 65.266869][ T76] Kernel Offset: disabled [ 65.271219][ T76] Rebooting in 86400 seconds..