./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4093979545 <...> Warning: Permanently added '10.128.1.82' (ECDSA) to the list of known hosts. execve("./syz-executor4093979545", ["./syz-executor4093979545"], 0x7ffeacd18650 /* 10 vars */) = 0 brk(NULL) = 0x555555620000 brk(0x555555620c40) = 0x555555620c40 arch_prctl(ARCH_SET_FS, 0x555555620300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4093979545", 4096) = 28 brk(0x555555641c40) = 0x555555641c40 brk(0x555555642000) = 0x555555642000 mprotect(0x7f7bc7530000, 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 3605 attached , child_tidptr=0x5555556205d0) = 3605 [pid 3605] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3605] setsid() = 1 [pid 3605] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3605] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3605] unshare(CLONE_NEWNS) = 0 [pid 3605] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3605] unshare(CLONE_NEWIPC) = 0 [pid 3605] unshare(CLONE_NEWCGROUP) = 0 [pid 3605] unshare(CLONE_NEWUTS) = 0 [pid 3605] unshare(CLONE_SYSVSEM) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "16777216", 8) = 8 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "536870912", 9) = 9 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "8192", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024", 4) = 4 [pid 3605] close(3) = 0 [pid 3605] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3605] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3605] close(3) = 0 [pid 3605] getpid() = 1 [pid 3605] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 33.473060][ T3605] dump_stack_lvl+0xcd/0x134 [ 33.477649][ T3605] print_report.cold+0x2ba/0x719 [ 33.482587][ T3605] ? nilfs_segctor_confirm+0x175/0x190 [ 33.488135][ T3605] kasan_report+0xb1/0x1e0 [ 33.492552][ T3605] ? nilfs_segctor_confirm+0x175/0x190 [ 33.498009][ T3605] nilfs_segctor_confirm+0x175/0x190 [ 33.503312][ T3605] nilfs_detach_log_writer+0x856/0x9f0 [ 33.508814][ T3605] ? nilfs_clean_segments+0xa80/0xa80 [ 33.514205][ T3605] ? collect_domain_accesses+0xbf0/0xbf0 [ 33.520011][ T3605] ? __fsnotify_vfsmount_delete+0x20/0x20 [ 33.525900][ T3605] ? dispose_list+0x1e0/0x1e0 [ 33.530578][ T3605] nilfs_put_super+0x3f/0x1a0 [ 33.535344][ T3605] ? nilfs_freeze+0xc0/0xc0 [ 33.539846][ T3605] generic_shutdown_super+0x154/0x410 [ 33.545218][ T3605] kill_block_super+0x97/0xf0 [ 33.549890][ T3605] deactivate_locked_super+0x94/0x160 [ 33.555264][ T3605] deactivate_super+0xad/0xd0 [ 33.559945][ T3605] cleanup_mnt+0x2ae/0x3d0 [ 33.564359][ T3605] task_work_run+0xdd/0x1a0 [ 33.568861][ T3605] do_exit+0xad5/0x29b0 [ 33.573035][ T3605] ? mm_update_next_owner+0x7a0/0x7a0 [ 33.578600][ T3605] do_group_exit+0xd2/0x2f0 [ 33.583101][ T3605] __x64_sys_exit_group+0x3a/0x50 [ 33.588141][ T3605] do_syscall_64+0x35/0xb0 [ 33.592555][ T3605] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 33.598444][ T3605] RIP: 0033:0x7f7bc74beb99 [ 33.602846][ T3605] Code: Unable to access opcode bytes at 0x7f7bc74beb6f. [ 33.609850][ T3605] RSP: 002b:00007ffffff58f98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 33.618253][ T3605] RAX: ffffffffffffffda RBX: 00007f7bc7536330 RCX: 00007f7bc74beb99 [ 33.626217][ T3605] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 33.634382][ T3605] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f7bc7530e40 [ 33.642364][ T3605] R10: 00007ffffff58eb0 R11: 0000000000000246 R12: 00007f7bc7536330 [ 33.650341][ T3605] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 33.658323][ T3605] [ 33.661416][ T3605] [ 33.663724][ T3605] Allocated by task 3605: [ 33.668037][ T3605] kasan_save_stack+0x1e/0x40 [ 33.672714][ T3605] __kasan_kmalloc+0xa9/0xd0 [ 33.677302][ T3605] nilfs_find_or_create_root+0x84/0x4d0 [ 33.682842][ T3605] nilfs_attach_checkpoint+0xc1/0x4b0 [ 33.688217][ T3605] nilfs_mount+0xb12/0xfb0 [ 33.692633][ T3605] legacy_get_tree+0x105/0x220 [ 33.697410][ T3605] vfs_get_tree+0x89/0x2f0 [ 33.701822][ T3605] path_mount+0x1326/0x1e20 [ 33.706344][ T3605] __x64_sys_mount+0x27f/0x300 [ 33.711104][ T3605] do_syscall_64+0x35/0xb0 [ 33.715892][ T3605] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 33.721775][ T3605] [ 33.724083][ T3605] Freed by task 3605: [ 33.728042][ T3605] kasan_save_stack+0x1e/0x40 [ 33.732714][ T3605] kasan_set_track+0x21/0x30 [ 33.737338][ T3605] kasan_set_free_info+0x20/0x30 [ 33.742272][ T3605] ____kasan_slab_free+0x166/0x1c0 [ 33.747387][ T3605] slab_free_freelist_hook+0x8b/0x1c0 [ 33.752764][ T3605] kfree+0xe2/0x580 [ 33.756662][ T3605] nilfs_put_root+0xb1/0xd0 [ 33.761159][ T3605] nilfs_clear_inode+0x29a/0x330 [ 33.766095][ T3605] nilfs_evict_inode+0x318/0x440 [ 33.771028][ T3605] evict+0x2ed/0x6b0 [ 33.774918][ T3605] dispose_list+0x117/0x1e0 [ 33.779418][ T3605] evict_inodes+0x3c3/0x450 [ 33.783917][ T3605] generic_shutdown_super+0xab/0x410 [ 33.789195][ T3605] kill_block_super+0x97/0xf0 [ 33.793866][ T3605] deactivate_locked_super+0x94/0x160 [ 33.799235][ T3605] deactivate_super+0xad/0xd0 [ 33.803906][ T3605] cleanup_mnt+0x2ae/0x3d0 [ 33.808312][ T3605] task_work_run+0xdd/0x1a0 [ 33.812831][ T3605] do_exit+0xad5/0x29b0 [ 33.816980][ T3605] do_group_exit+0xd2/0x2f0 [ 33.821513][ T3605] __x64_sys_exit_group+0x3a/0x50 [ 33.826550][ T3605] do_syscall_64+0x35/0xb0 [ 33.830957][ T3605] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 33.836856][ T3605] [ 33.839164][ T3605] The buggy address belongs to the object at ffff88801c767e00 [ 33.839164][ T3605] which belongs to the cache kmalloc-256 of size 256 [ 33.853200][ T3605] The buggy address is located 48 bytes inside of [ 33.853200][ T3605] 256-byte region [ffff88801c767e00, ffff88801c767f00) [ 33.866382][ T3605] [ 33.868691][ T3605] The buggy address belongs to the physical page: [ 33.875083][ T3605] page:ffffea000071d980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c766 [ 33.885219][ T3605] head:ffffea000071d980 order:1 compound_mapcount:0 compound_pincount:0 [ 33.893545][ T3605] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 33.901515][ T3605] raw: 00fff00000010200 0000000000000000 dead000000000001 ffff888011841b40 [ 33.910261][ T3605] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 33.918824][ T3605] page dumped because: kasan: bad access detected [ 33.925395][ T3605] page_owner tracks the page as allocated [ 33.931092][ T3605] 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 6388289879, free_ts 0 [ 33.950704][ T3605] get_page_from_freelist+0x109b/0x2ce0 [ 33.956257][ T3605] __alloc_pages+0x1c7/0x510 [ 33.961017][ T3605] allocate_slab+0x80/0x3d0 [ 33.965511][ T3605] ___slab_alloc+0x84f/0xe80 [ 33.970179][ T3605] __slab_alloc.constprop.0+0x4d/0xa0 [ 33.975553][ T3605] kmem_cache_alloc_node_trace+0x185/0x410 [ 33.981355][ T3605] blk_mq_init_tags+0x6a/0x170 [ 33.986218][ T3605] blk_mq_alloc_rq_map+0x1ba/0x3b0 [ 33.991321][ T3605] blk_mq_alloc_tag_set+0x8b2/0x1280 [ 33.996603][ T3605] scsi_add_host_with_dma.cold+0x211/0x889 [ 34.002421][ T3605] virtscsi_probe+0x805/0xc50 [ 34.007278][ T3605] virtio_dev_probe+0x577/0x870 [ 34.012119][ T3605] really_probe+0x249/0xb90 [ 34.016627][ T3605] __driver_probe_device+0x1df/0x4d0 [ 34.021993][ T3605] driver_probe_device+0x4c/0x1a0 [ 34.027009][ T3605] __driver_attach+0x1d0/0x550 [ 34.031770][ T3605] page_owner free stack trace missing [ 34.037118][ T3605] [ 34.039424][ T3605] Memory state around the buggy address: [ 34.045047][ T3605] ffff88801c767d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.053107][ T3605] ffff88801c767d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.061149][ T3605] >ffff88801c767e00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.069188][ T3605] ^ [ 34.074799][ T3605] ffff88801c767e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.082846][ T3605] ffff88801c767f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.090892][ T3605] ================================================================== [ 34.099723][ T3605] Kernel panic - not syncing: panic_on_warn set ... [ 34.106412][ T3605] CPU: 1 PID: 3605 Comm: syz-executor409 Not tainted 6.0.0-syzkaller-09039-ga6afa4199d3d #0 [ 34.116496][ T3605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.126547][ T3605] Call Trace: [ 34.129827][ T3605] [ 34.132762][ T3605] dump_stack_lvl+0xcd/0x134 [ 34.137339][ T3605] panic+0x2c8/0x622 [ 34.141217][ T3605] ? panic_print_sys_info.part.0+0x10b/0x10b [ 34.147194][ T3605] ? preempt_schedule_common+0x59/0xc0 [ 34.152644][ T3605] ? preempt_schedule_thunk+0x16/0x18 [ 34.158004][ T3605] ? nilfs_segctor_confirm+0x175/0x190 [ 34.163447][ T3605] end_report.part.0+0x3f/0x7c [ 34.168196][ T3605] kasan_report.cold+0xa/0xf [ 34.172773][ T3605] ? nilfs_segctor_confirm+0x175/0x190 [ 34.178216][ T3605] nilfs_segctor_confirm+0x175/0x190 [ 34.183485][ T3605] nilfs_detach_log_writer+0x856/0x9f0 [ 34.188946][ T3605] ? nilfs_clean_segments+0xa80/0xa80 [ 34.194306][ T3605] ? collect_domain_accesses+0xbf0/0xbf0 [ 34.199921][ T3605] ? __fsnotify_vfsmount_delete+0x20/0x20 [ 34.205645][ T3605] ? dispose_list+0x1e0/0x1e0 [ 34.210331][ T3605] nilfs_put_super+0x3f/0x1a0 [ 34.214997][ T3605] ? nilfs_freeze+0xc0/0xc0 [ 34.219486][ T3605] generic_shutdown_super+0x154/0x410 [ 34.224846][ T3605] kill_block_super+0x97/0xf0 [ 34.229506][ T3605] deactivate_locked_super+0x94/0x160 [ 34.234882][ T3605] deactivate_super+0xad/0xd0 [ 34.239551][ T3605] cleanup_mnt+0x2ae/0x3d0 [ 34.243953][ T3605] task_work_run+0xdd/0x1a0 [ 34.248442][ T3605] do_exit+0xad5/0x29b0 [ 34.252592][ T3605] ? mm_update_next_owner+0x7a0/0x7a0 [ 34.257957][ T3605] do_group_exit+0xd2/0x2f0 [ 34.262622][ T3605] __x64_sys_exit_group+0x3a/0x50 [ 34.267634][ T3605] do_syscall_64+0x35/0xb0 [ 34.272055][ T3605] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 34.277931][ T3605] RIP: 0033:0x7f7bc74beb99 [ 34.282326][ T3605] Code: Unable to access opcode bytes at 0x7f7bc74beb6f. [ 34.289317][ T3605] RSP: 002b:00007ffffff58f98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 34.297708][ T3605] RAX: ffffffffffffffda RBX: 00007f7bc7536330 RCX: 00007f7bc74beb99 [ 34.305659][ T3605] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 34.313625][ T3605] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f7bc7530e40 [ 34.321576][ T3605] R10: 00007ffffff58eb0 R11: 0000000000000246 R12: 00007f7bc7536330 [ 34.329528][ T3605] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 34.337486][ T3605] [ 34.340982][ T3605] Kernel Offset: disabled [ 34.345418][ T3605] Rebooting in 86400 seconds..