./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3623372601 <...> DUID 00:04:ac:03:58:10:d0:76:5c:28:30:a7:8a:8b:4a:a3:06:e2 forked to background, child pid 4654 [ 37.384015][ T4655] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.408720][ T4655] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. execve("./syz-executor3623372601", ["./syz-executor3623372601"], 0x7ffd4a1fa6b0 /* 10 vars */) = 0 brk(NULL) = 0x55555720b000 brk(0x55555720bc40) = 0x55555720bc40 arch_prctl(ARCH_SET_FS, 0x55555720b300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3623372601", 4096) = 28 brk(0x55555722cc40) = 0x55555722cc40 brk(0x55555722d000) = 0x55555722d000 mprotect(0x7fb5ef36c000, 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 5080 attached , child_tidptr=0x55555720b5d0) = 5080 [pid 5080] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5080] setsid() = 1 [pid 5080] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5080] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5080] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5080] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5080] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5080] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5080] unshare(CLONE_NEWNS) = 0 [pid 5080] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5080] unshare(CLONE_NEWIPC) = 0 [pid 5080] unshare(CLONE_NEWCGROUP) = 0 [pid 5080] unshare(CLONE_NEWUTS) = 0 [pid 5080] unshare(CLONE_SYSVSEM) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "16777216", 8) = 8 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "536870912", 9) = 9 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1024", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "8192", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1024", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1024", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5080] close(3) = 0 [pid 5080] getpid() = 1 [pid 5080] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 59.777520][ T5080] dump_stack_lvl+0xd9/0x150 [ 59.782107][ T5080] print_address_description.constprop.0+0x2c/0x3c0 [ 59.788692][ T5080] ? hfsplus_release_folio+0x554/0x5f0 [ 59.794139][ T5080] kasan_report+0x11c/0x130 [ 59.798651][ T5080] ? hfsplus_release_folio+0x554/0x5f0 [ 59.804101][ T5080] hfsplus_release_folio+0x554/0x5f0 [ 59.809377][ T5080] ? hfsplus_show_options+0x680/0x680 [ 59.814745][ T5080] filemap_release_folio+0x13f/0x1b0 [ 59.820022][ T5080] block_invalidate_folio+0x4dc/0x5e0 [ 59.825393][ T5080] ? end_buffer_write_sync+0xf0/0xf0 [ 59.830758][ T5080] ? end_buffer_write_sync+0xf0/0xf0 [ 59.836054][ T5080] truncate_cleanup_folio+0x31a/0x3f0 [ 59.841441][ T5080] truncate_inode_pages_range+0x238/0xec0 [ 59.847185][ T5080] ? truncate_inode_partial_folio+0x750/0x750 [ 59.853267][ T5080] ? print_usage_bug.part.0+0x660/0x660 [ 59.858815][ T5080] ? find_held_lock+0x2d/0x110 [ 59.863579][ T5080] ? truncate_inode_pages_final+0x63/0x90 [ 59.869292][ T5080] ? mark_held_locks+0x9f/0xe0 [ 59.874047][ T5080] ? _raw_spin_unlock_irq+0x23/0x50 [ 59.879240][ T5080] ? lockdep_hardirqs_on+0x7d/0x100 [ 59.884446][ T5080] hfsplus_evict_inode+0x1a/0xe0 [ 59.889394][ T5080] ? hfsplus_remount+0x470/0x470 [ 59.894339][ T5080] evict+0x2ed/0x6b0 [ 59.898244][ T5080] iput+0x52b/0x8e0 [ 59.902044][ T5080] hfsplus_put_super+0x274/0x3f0 [ 59.906974][ T5080] ? hfsplus_sync_fs+0xb10/0xb10 [ 59.911903][ T5080] generic_shutdown_super+0x158/0x480 [ 59.917265][ T5080] kill_block_super+0x9b/0xf0 [ 59.921947][ T5080] deactivate_locked_super+0x98/0x160 [ 59.927338][ T5080] deactivate_super+0xb1/0xd0 [ 59.932017][ T5080] cleanup_mnt+0x2ae/0x3d0 [ 59.936452][ T5080] task_work_run+0x16f/0x270 [ 59.941034][ T5080] ? task_work_cancel+0x30/0x30 [ 59.945892][ T5080] do_exit+0xb42/0x2b60 [ 59.950065][ T5080] ? mm_update_next_owner+0x7b0/0x7b0 [ 59.955426][ T5080] ? _raw_spin_unlock_irq+0x23/0x50 [ 59.960621][ T5080] do_group_exit+0xd4/0x2a0 [ 59.965113][ T5080] __x64_sys_exit_group+0x3e/0x50 [ 59.970126][ T5080] do_syscall_64+0x39/0xb0 [ 59.974555][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 59.980448][ T5080] RIP: 0033:0x7fb5ef2fccd9 [ 59.984865][ T5080] Code: Unable to access opcode bytes at 0x7fb5ef2fccaf. [ 59.991865][ T5080] RSP: 002b:00007fffe2b31d18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 60.000262][ T5080] RAX: ffffffffffffffda RBX: 00007fb5ef3723f0 RCX: 00007fb5ef2fccd9 [ 60.008219][ T5080] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 60.016175][ T5080] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000000005f6 [ 60.024130][ T5080] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb5ef3723f0 [ 60.032108][ T5080] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 60.040096][ T5080] [ 60.043108][ T5080] [ 60.045413][ T5080] Allocated by task 5080: [ 60.049724][ T5080] kasan_save_stack+0x22/0x40 [ 60.054400][ T5080] kasan_set_track+0x25/0x30 [ 60.058984][ T5080] __kasan_kmalloc+0xa2/0xb0 [ 60.063574][ T5080] hfsplus_btree_open+0x51/0xe70 [ 60.068501][ T5080] hfsplus_fill_super+0xa4e/0x1c40 [ 60.073599][ T5080] mount_bdev+0x351/0x410 [ 60.077915][ T5080] legacy_get_tree+0x109/0x220 [ 60.082669][ T5080] vfs_get_tree+0x8d/0x350 [ 60.087073][ T5080] path_mount+0x1342/0x1e40 [ 60.091569][ T5080] __x64_sys_mount+0x283/0x300 [ 60.096347][ T5080] do_syscall_64+0x39/0xb0 [ 60.100756][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.106636][ T5080] [ 60.108945][ T5080] Freed by task 5080: [ 60.112904][ T5080] kasan_save_stack+0x22/0x40 [ 60.117574][ T5080] kasan_set_track+0x25/0x30 [ 60.122153][ T5080] kasan_save_free_info+0x2e/0x40 [ 60.127164][ T5080] ____kasan_slab_free+0x160/0x1c0 [ 60.132269][ T5080] slab_free_freelist_hook+0x8b/0x1c0 [ 60.137631][ T5080] __kmem_cache_free+0xaf/0x2d0 [ 60.142483][ T5080] hfsplus_btree_close+0x28a/0x390 [ 60.147585][ T5080] hfsplus_put_super+0x224/0x3f0 [ 60.152509][ T5080] generic_shutdown_super+0x158/0x480 [ 60.157874][ T5080] kill_block_super+0x9b/0xf0 [ 60.162538][ T5080] deactivate_locked_super+0x98/0x160 [ 60.167902][ T5080] deactivate_super+0xb1/0xd0 [ 60.172570][ T5080] cleanup_mnt+0x2ae/0x3d0 [ 60.176982][ T5080] task_work_run+0x16f/0x270 [ 60.181560][ T5080] do_exit+0xb42/0x2b60 [ 60.185701][ T5080] do_group_exit+0xd4/0x2a0 [ 60.190190][ T5080] __x64_sys_exit_group+0x3e/0x50 [ 60.195199][ T5080] do_syscall_64+0x39/0xb0 [ 60.199612][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.205513][ T5080] [ 60.207836][ T5080] The buggy address belongs to the object at ffff88807ac58000 [ 60.207836][ T5080] which belongs to the cache kmalloc-4k of size 4096 [ 60.222312][ T5080] The buggy address is located 56 bytes inside of [ 60.222312][ T5080] freed 4096-byte region [ffff88807ac58000, ffff88807ac59000) [ 60.236092][ T5080] [ 60.238404][ T5080] The buggy address belongs to the physical page: [ 60.244829][ T5080] page:ffffea0001eb1600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7ac58 [ 60.254969][ T5080] head:ffffea0001eb1600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 60.263887][ T5080] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 60.271895][ T5080] raw: 00fff00000010200 ffff888012442140 dead000000000122 0000000000000000 [ 60.280530][ T5080] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 60.289106][ T5080] page dumped because: kasan: bad access detected [ 60.295533][ T5080] page_owner tracks the page as allocated [ 60.301230][ T5080] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5080, tgid 5080 (syz-executor362), ts 59692317166, free_ts 53510393193 [ 60.322844][ T5080] get_page_from_freelist+0x11bb/0x2d50 [ 60.328394][ T5080] __alloc_pages+0x1cb/0x5c0 [ 60.332988][ T5080] alloc_pages+0x1aa/0x270 [ 60.337399][ T5080] allocate_slab+0x28e/0x380 [ 60.341980][ T5080] ___slab_alloc+0xa91/0x1400 [ 60.346648][ T5080] __slab_alloc.constprop.0+0x56/0xa0 [ 60.352017][ T5080] __kmem_cache_alloc_node+0x136/0x330 [ 60.357489][ T5080] kmalloc_trace+0x26/0x60 [ 60.361897][ T5080] hfsplus_btree_open+0x51/0xe70 [ 60.366826][ T5080] hfsplus_fill_super+0xa4e/0x1c40 [ 60.371924][ T5080] mount_bdev+0x351/0x410 [ 60.376252][ T5080] legacy_get_tree+0x109/0x220 [ 60.381015][ T5080] vfs_get_tree+0x8d/0x350 [ 60.385422][ T5080] path_mount+0x1342/0x1e40 [ 60.389915][ T5080] __x64_sys_mount+0x283/0x300 [ 60.394669][ T5080] do_syscall_64+0x39/0xb0 [ 60.399081][ T5080] page last free stack trace: [ 60.403734][ T5080] free_pcp_prepare+0x4d0/0x910 [ 60.408583][ T5080] free_unref_page+0x1d/0x490 [ 60.413264][ T5080] __folio_put+0x109/0x140 [ 60.417664][ T5080] skb_release_data+0x522/0x820 [ 60.422529][ T5080] skb_attempt_defer_free+0x309/0x3f0 [ 60.427890][ T5080] tcp_recvmsg_locked+0x124e/0x22e0 [ 60.433076][ T5080] tcp_recvmsg+0x117/0x620 [ 60.437480][ T5080] inet_recvmsg+0x114/0x640 [ 60.441975][ T5080] sock_recvmsg+0xe2/0x160 [ 60.446382][ T5080] sock_read_iter+0x2bd/0x3b0 [ 60.451046][ T5080] vfs_read+0x7fa/0x930 [ 60.455194][ T5080] ksys_read+0x1ec/0x250 [ 60.459421][ T5080] do_syscall_64+0x39/0xb0 [ 60.463828][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.469732][ T5080] [ 60.472067][ T5080] Memory state around the buggy address: [ 60.477678][ T5080] ffff88807ac57f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 60.486088][ T5080] ffff88807ac57f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 60.494131][ T5080] >ffff88807ac58000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.502171][ T5080] ^ [ 60.508044][ T5080] ffff88807ac58080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.516086][ T5080] ffff88807ac58100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.524145][ T5080] ================================================================== [ 60.544612][ T5080] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 60.551928][ T5080] CPU: 1 PID: 5080 Comm: syz-executor362 Not tainted 6.2.0-rc6-next-20230131-syzkaller-09515-g80bd9028feca #0 [ 60.563541][ T5080] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 60.573597][ T5080] Call Trace: [ 60.576869][ T5080] [ 60.579787][ T5080] dump_stack_lvl+0xd9/0x150 [ 60.584625][ T5080] panic+0x61b/0x6c0 [ 60.588514][ T5080] ? panic_smp_self_stop+0x90/0x90 [ 60.593615][ T5080] ? preempt_schedule_thunk+0x1a/0x20 [ 60.599005][ T5080] ? preempt_schedule_common+0x45/0xb0 [ 60.604453][ T5080] check_panic_on_warn+0xb1/0xc0 [ 60.609403][ T5080] end_report+0xf6/0x180 [ 60.613734][ T5080] ? hfsplus_release_folio+0x554/0x5f0 [ 60.619180][ T5080] kasan_report+0xf9/0x130 [ 60.623591][ T5080] ? hfsplus_release_folio+0x554/0x5f0 [ 60.629069][ T5080] hfsplus_release_folio+0x554/0x5f0 [ 60.634345][ T5080] ? hfsplus_show_options+0x680/0x680 [ 60.639714][ T5080] filemap_release_folio+0x13f/0x1b0 [ 60.645018][ T5080] block_invalidate_folio+0x4dc/0x5e0 [ 60.650387][ T5080] ? end_buffer_write_sync+0xf0/0xf0 [ 60.655670][ T5080] ? end_buffer_write_sync+0xf0/0xf0 [ 60.660962][ T5080] truncate_cleanup_folio+0x31a/0x3f0 [ 60.666320][ T5080] truncate_inode_pages_range+0x238/0xec0 [ 60.672046][ T5080] ? truncate_inode_partial_folio+0x750/0x750 [ 60.678102][ T5080] ? print_usage_bug.part.0+0x660/0x660 [ 60.683653][ T5080] ? find_held_lock+0x2d/0x110 [ 60.688403][ T5080] ? truncate_inode_pages_final+0x63/0x90 [ 60.694116][ T5080] ? mark_held_locks+0x9f/0xe0 [ 60.698868][ T5080] ? _raw_spin_unlock_irq+0x23/0x50 [ 60.704059][ T5080] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.709252][ T5080] hfsplus_evict_inode+0x1a/0xe0 [ 60.714180][ T5080] ? hfsplus_remount+0x470/0x470 [ 60.719115][ T5080] evict+0x2ed/0x6b0 [ 60.723012][ T5080] iput+0x52b/0x8e0 [ 60.726832][ T5080] hfsplus_put_super+0x274/0x3f0 [ 60.731762][ T5080] ? hfsplus_sync_fs+0xb10/0xb10 [ 60.736701][ T5080] generic_shutdown_super+0x158/0x480 [ 60.742077][ T5080] kill_block_super+0x9b/0xf0 [ 60.746748][ T5080] deactivate_locked_super+0x98/0x160 [ 60.752113][ T5080] deactivate_super+0xb1/0xd0 [ 60.756782][ T5080] cleanup_mnt+0x2ae/0x3d0 [ 60.761191][ T5080] task_work_run+0x16f/0x270 [ 60.765771][ T5080] ? task_work_cancel+0x30/0x30 [ 60.770612][ T5080] do_exit+0xb42/0x2b60 [ 60.774778][ T5080] ? mm_update_next_owner+0x7b0/0x7b0 [ 60.780145][ T5080] ? _raw_spin_unlock_irq+0x23/0x50 [ 60.785742][ T5080] do_group_exit+0xd4/0x2a0 [ 60.790250][ T5080] __x64_sys_exit_group+0x3e/0x50 [ 60.795265][ T5080] do_syscall_64+0x39/0xb0 [ 60.799682][ T5080] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.805578][ T5080] RIP: 0033:0x7fb5ef2fccd9 [ 60.809978][ T5080] Code: Unable to access opcode bytes at 0x7fb5ef2fccaf. [ 60.816992][ T5080] RSP: 002b:00007fffe2b31d18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 60.825418][ T5080] RAX: ffffffffffffffda RBX: 00007fb5ef3723f0 RCX: 00007fb5ef2fccd9 [ 60.833408][ T5080] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 60.841388][ T5080] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00000000000005f6 [ 60.849355][ T5080] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb5ef3723f0 [ 60.857317][ T5080] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 60.865291][ T5080] [ 60.868476][ T5080] Kernel Offset: disabled [ 60.872804][ T5080] Rebooting in 86400 seconds..