./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4168692663 <...> DUID 00:04:2f:bc:f2:2f:e4:1d:55:f7:99:3b:0f:15:66:5c:e9:07 forked to background, child pid 4661 [ 29.020611][ T4662] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.029832][ T4662] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 44.597870][ T4843] sshd (4843) used greatest stack depth: 18960 bytes left Warning: Permanently added '10.128.1.186' (ECDSA) to the list of known hosts. execve("./syz-executor4168692663", ["./syz-executor4168692663"], 0x7ffe72dd7780 /* 10 vars */) = 0 brk(NULL) = 0x55555752d000 brk(0x55555752dd00) = 0x55555752dd00 arch_prctl(ARCH_SET_FS, 0x55555752d3c0) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor4168692663", 4096) = 28 brk(0x55555754ed00) = 0x55555754ed00 brk(0x55555754f000) = 0x55555754f000 mprotect(0x7ff1ec1ea000, 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 getpid() = 4992 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "4992", 4) = 4 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7ff1ec12c6f0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff1ec1310c0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7ff1ec12c6f0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff1ec1310c0}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555752d690) = 4993 ./strace-static-x86_64: Process 4993 attached [pid 4993] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 4993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4993] setsid() = 1 [pid 4993] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 4993] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 4993] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 4993] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 4993] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 4993] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 4993] unshare(CLONE_NEWNS) = 0 [pid 4993] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 4993] unshare(CLONE_NEWIPC) = 0 [pid 4993] unshare(CLONE_NEWCGROUP) = 0 [pid 4993] unshare(CLONE_NEWUTS) = 0 [pid 4993] unshare(CLONE_SYSVSEM) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "16777216", 8) = 8 [pid 4993] close(3) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "536870912", 9) = 9 [pid 4993] close(3) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "1024", 4) = 4 [pid 4993] close(3) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "8192", 4) = 4 [pid 4993] close(3) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "1024", 4) = 4 [pid 4993] close(3) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "1024", 4) = 4 [pid 4993] close(3) = 0 [pid 4993] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "1024 1048576 500 1024", 21) = 21 [pid 4993] close(3) = 0 [pid 4993] getpid() = 1 [pid 4993] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 57.456144][ T4993] dump_stack_lvl+0x1e7/0x2d0 [ 57.460829][ T4993] ? nf_tcp_handle_invalid+0x650/0x650 [ 57.466276][ T4993] ? panic+0x770/0x770 [ 57.470333][ T4993] should_fail_ex+0x3aa/0x4e0 [ 57.475000][ T4993] prepare_alloc_pages+0x1d9/0x5b0 [ 57.480098][ T4993] __alloc_pages+0x165/0x670 [ 57.484684][ T4993] ? zone_statistics+0x170/0x170 [ 57.489628][ T4993] ? do_raw_spin_unlock+0x13b/0x8b0 [ 57.494817][ T4993] ? free_unref_page_commit+0x20c/0x540 [ 57.500343][ T4993] __kmalloc_large_node+0x91/0x1d0 [ 57.505457][ T4993] kmalloc_large+0x20/0x100 [ 57.509957][ T4993] ? diMount+0x1a/0x870 [ 57.514092][ T4993] diMount+0x29/0x870 [ 57.518057][ T4993] ? diUnmount+0xf3/0x100 [ 57.522463][ T4993] jfs_mount_rw+0x2da/0x6a0 [ 57.526950][ T4993] ? chkSuper+0x1010/0x1010 [ 57.531445][ T4993] ? list_lru_walk_one_irq+0xe0/0xe0 [ 57.536719][ T4993] ? shrink_dentry_list+0x690/0x6a0 [ 57.541898][ T4993] ? sync_filesystem+0x107/0x220 [ 57.546818][ T4993] jfs_remount+0x3d1/0x6b0 [ 57.551219][ T4993] ? jfs_statfs+0x510/0x510 [ 57.555708][ T4993] ? __might_sleep+0xc0/0xc0 [ 57.560284][ T4993] ? hook_sb_remount+0x1d/0xd0 [ 57.565047][ T4993] reconfigure_super+0x3c9/0x7c0 [ 57.569993][ T4993] path_mount+0xc19/0xf80 [ 57.574307][ T4993] ? user_path_at_empty+0x12f/0x180 [ 57.579491][ T4993] __se_sys_mount+0x2d9/0x3c0 [ 57.584165][ T4993] ? __x64_sys_mount+0xc0/0xc0 [ 57.588913][ T4993] ? syscall_enter_from_user_mode+0x32/0x230 [ 57.594878][ T4993] ? __x64_sys_mount+0x20/0xc0 [ 57.599624][ T4993] do_syscall_64+0x41/0xc0 [ 57.604024][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 57.609905][ T4993] RIP: 0033:0x7ff1ec17bf4a [ 57.614306][ T4993] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 f8 03 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 57.633896][ T4993] RSP: 002b:00007ffdee800828 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 57.642295][ T4993] RAX: ffffffffffffffda RBX: 000055555752d380 RCX: 00007ff1ec17bf4a [ 57.650254][ T4993] RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 [ 57.658207][ T4993] RBP: 0000000000000000 R08: 00007ffdee8008b0 R09: 0000000000000002 [pid 4993] mount(NULL, ".", 0x20000040, MS_REMOUNT|MS_DIRSYNC|MS_NOATIME|MS_SILENT|MS_I_VERSION|MS_STRICTATIME, "") = -1 ENOMEM (Cannot allocate memory) [pid 4993] exit_group(1) = ? [ 57.666159][ T4993] R10: 00000000018084a0 R11: 0000000000000286 R12: 00000000ffffffff [ 57.674112][ T4993] R13: 00007ffdee8008b0 R14: 0000000000000000 R15: 0000000020000080 [ 57.682081][ T4993] [ 57.691088][ T4993] jfs_mount_rw: diMount failed! [ 57.712119][ T4993] ================================================================== [ 57.720196][ T4993] BUG: KASAN: double-free in diUnmount+0xf3/0x100 [ 57.726685][ T4993] Free of addr ffff8880791f8000 by task syz-executor416/4993 [ 57.734027][ T4993] [ 57.736332][ T4993] CPU: 0 PID: 4993 Comm: syz-executor416 Not tainted 6.4.0-rc4-syzkaller-00265-g4ecd704a4c51 #0 [ 57.746719][ T4993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 57.756754][ T4993] Call Trace: [ 57.760015][ T4993] [ 57.762926][ T4993] dump_stack_lvl+0x1e7/0x2d0 [ 57.767588][ T4993] ? irq_work_queue+0xca/0x150 [ 57.772333][ T4993] ? nf_tcp_handle_invalid+0x650/0x650 [ 57.777778][ T4993] ? panic+0x770/0x770 [ 57.781833][ T4993] ? _printk+0xd5/0x120 [ 57.785968][ T4993] ? diUnmount+0xf3/0x100 [ 57.790277][ T4993] print_report+0x163/0x540 [ 57.794858][ T4993] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 57.800774][ T4993] ? _raw_spin_unlock+0x40/0x40 [ 57.805610][ T4993] ? __virt_addr_valid+0x22f/0x2e0 [ 57.810717][ T4993] ? __phys_addr+0xba/0x170 [ 57.815211][ T4993] ? diUnmount+0xf3/0x100 [ 57.819533][ T4993] ? diUnmount+0xf3/0x100 [ 57.823849][ T4993] kasan_report_invalid_free+0xeb/0x100 [ 57.829383][ T4993] ? diUnmount+0xf3/0x100 [ 57.833707][ T4993] ____kasan_slab_free+0xfb/0x120 [ 57.838722][ T4993] __kmem_cache_free+0x264/0x3c0 [ 57.843642][ T4993] ? diUnmount+0xf3/0x100 [ 57.847960][ T4993] diUnmount+0xf3/0x100 [ 57.852102][ T4993] jfs_umount+0x186/0x3a0 [ 57.856419][ T4993] jfs_put_super+0x8a/0x190 [ 57.860903][ T4993] ? jfs_free_inode+0x30/0x30 [ 57.865563][ T4993] generic_shutdown_super+0x134/0x340 [ 57.870924][ T4993] kill_block_super+0x84/0xf0 [ 57.875589][ T4993] deactivate_locked_super+0xa4/0x110 [ 57.880945][ T4993] cleanup_mnt+0x426/0x4c0 [ 57.885350][ T4993] ? _raw_spin_unlock_irq+0x23/0x50 [ 57.890533][ T4993] task_work_run+0x24a/0x300 [ 57.895107][ T4993] ? kasan_quarantine_put+0xd8/0x230 [ 57.900382][ T4993] ? task_work_cancel+0x2b0/0x2b0 [ 57.905391][ T4993] ? kmem_cache_free+0x297/0x520 [ 57.910310][ T4993] ? do_exit+0x68a/0x2290 [ 57.914623][ T4993] do_exit+0x68f/0x2290 [ 57.918777][ T4993] ? put_task_struct+0x80/0x80 [ 57.923521][ T4993] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 57.929498][ T4993] ? print_irqtrace_events+0x220/0x220 [ 57.934944][ T4993] ? _raw_spin_unlock_irq+0x23/0x50 [ 57.940123][ T4993] ? lockdep_hardirqs_on+0x98/0x140 [ 57.945307][ T4993] do_group_exit+0x206/0x2c0 [ 57.949883][ T4993] __x64_sys_exit_group+0x3f/0x40 [ 57.954894][ T4993] do_syscall_64+0x41/0xc0 [ 57.959297][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 57.965264][ T4993] RIP: 0033:0x7ff1ec179679 [ 57.969665][ T4993] Code: Unable to access opcode bytes at 0x7ff1ec17964f. [ 57.976664][ T4993] RSP: 002b:00007ffdee8009c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 57.985061][ T4993] RAX: ffffffffffffffda RBX: 00007ff1ec1f03f0 RCX: 00007ff1ec179679 [ 57.993015][ T4993] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 58.000983][ T4993] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000002 [ 58.009038][ T4993] R10: 00000000018084a0 R11: 0000000000000246 R12: 00007ff1ec1f03f0 [ 58.017015][ T4993] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 58.025073][ T4993] [ 58.028096][ T4993] [ 58.030412][ T4993] Allocated by task 5000: [ 58.034725][ T4993] kasan_set_track+0x4f/0x70 [ 58.039312][ T4993] __kasan_kmalloc+0x98/0xb0 [ 58.043893][ T4993] __kmalloc_node_track_caller+0xb6/0x230 [ 58.049604][ T4993] kmalloc_reserve+0xfe/0x240 [ 58.054270][ T4993] __alloc_skb+0x1b1/0x420 [ 58.058678][ T4993] nsim_dev_trap_report_work+0x250/0xa90 [ 58.064319][ T4993] process_one_work+0x8a0/0x10e0 [ 58.069268][ T4993] worker_thread+0xa63/0x1210 [ 58.073939][ T4993] kthread+0x2b8/0x350 [ 58.077998][ T4993] ret_from_fork+0x1f/0x30 [ 58.082407][ T4993] [ 58.084719][ T4993] Freed by task 5000: [ 58.088716][ T4993] kasan_set_track+0x4f/0x70 [ 58.093307][ T4993] kasan_save_free_info+0x2b/0x40 [ 58.098330][ T4993] ____kasan_slab_free+0xd6/0x120 [ 58.103348][ T4993] __kmem_cache_free+0x264/0x3c0 [ 58.108273][ T4993] skb_release_data+0x660/0x850 [ 58.113113][ T4993] consume_skb+0xb3/0x150 [ 58.117432][ T4993] nsim_dev_trap_report_work+0x761/0xa90 [ 58.123063][ T4993] process_one_work+0x8a0/0x10e0 [ 58.128007][ T4993] worker_thread+0xa63/0x1210 [ 58.132677][ T4993] kthread+0x2b8/0x350 [ 58.136732][ T4993] ret_from_fork+0x1f/0x30 [ 58.141138][ T4993] [ 58.143447][ T4993] The buggy address belongs to the object at ffff8880791f8000 [ 58.143447][ T4993] which belongs to the cache kmalloc-4k of size 4096 [ 58.157490][ T4993] The buggy address is located 0 bytes inside of [ 58.157490][ T4993] 4096-byte region [ffff8880791f8000, ffff8880791f9000) [ 58.170664][ T4993] [ 58.172977][ T4993] The buggy address belongs to the physical page: [ 58.179459][ T4993] page:ffffea0001e47e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x791f8 [ 58.189594][ T4993] head:ffffea0001e47e00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 58.198550][ T4993] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 58.206526][ T4993] page_type: 0xffffffff() [ 58.210848][ T4993] raw: 00fff00000010200 ffff888012442140 dead000000000122 0000000000000000 [ 58.219424][ T4993] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 58.227995][ T4993] page dumped because: kasan: bad access detected [ 58.234392][ T4993] page_owner tracks the page as allocated [ 58.240181][ T4993] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5000, tgid 5000 (kworker/0:4), ts 57686342144, free_ts 57415496162 [ 58.260874][ T4993] post_alloc_hook+0x1e6/0x210 [ 58.265722][ T4993] get_page_from_freelist+0x321c/0x33a0 [ 58.271271][ T4993] __alloc_pages+0x255/0x670 [ 58.275856][ T4993] alloc_slab_page+0x6a/0x160 [ 58.280529][ T4993] new_slab+0x84/0x2f0 [ 58.284588][ T4993] ___slab_alloc+0xa85/0x10a0 [ 58.289259][ T4993] __kmem_cache_alloc_node+0x1b8/0x290 [ 58.294709][ T4993] __kmalloc_node_track_caller+0xa5/0x230 [ 58.300423][ T4993] kmalloc_reserve+0xfe/0x240 [ 58.305091][ T4993] __alloc_skb+0x1b1/0x420 [ 58.309496][ T4993] nsim_dev_trap_report_work+0x250/0xa90 [ 58.315123][ T4993] process_one_work+0x8a0/0x10e0 [ 58.320057][ T4993] worker_thread+0xa63/0x1210 [ 58.324723][ T4993] kthread+0x2b8/0x350 [ 58.328780][ T4993] ret_from_fork+0x1f/0x30 [ 58.333183][ T4993] page last free stack trace: [ 58.337839][ T4993] free_unref_page_prepare+0x903/0xa30 [ 58.343287][ T4993] free_unref_page+0x37/0x3f0 [ 58.347947][ T4993] free_large_kmalloc+0xff/0x190 [ 58.352873][ T4993] diUnmount+0xf3/0x100 [ 58.357014][ T4993] jfs_mount_rw+0x2bf/0x6a0 [ 58.361501][ T4993] jfs_remount+0x3d1/0x6b0 [ 58.365904][ T4993] reconfigure_super+0x3c9/0x7c0 [ 58.370827][ T4993] path_mount+0xc19/0xf80 [ 58.375141][ T4993] __se_sys_mount+0x2d9/0x3c0 [ 58.379802][ T4993] do_syscall_64+0x41/0xc0 [ 58.384206][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 58.390082][ T4993] [ 58.392390][ T4993] Memory state around the buggy address: [ 58.398002][ T4993] ffff8880791f7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 58.406046][ T4993] ffff8880791f7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 58.414088][ T4993] >ffff8880791f8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.422127][ T4993] ^ [ 58.426174][ T4993] ffff8880791f8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.434222][ T4993] ffff8880791f8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 58.442261][ T4993] ================================================================== [ 58.465488][ T4993] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 58.472701][ T4993] CPU: 0 PID: 4993 Comm: syz-executor416 Not tainted 6.4.0-rc4-syzkaller-00265-g4ecd704a4c51 #0 [ 58.483199][ T4993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 58.493243][ T4993] Call Trace: [ 58.496512][ T4993] [ 58.499429][ T4993] dump_stack_lvl+0x1e7/0x2d0 [ 58.504099][ T4993] ? nf_tcp_handle_invalid+0x650/0x650 [ 58.509547][ T4993] ? panic+0x770/0x770 [ 58.513609][ T4993] ? preempt_schedule_common+0x83/0xc0 [ 58.519061][ T4993] ? vscnprintf+0x5d/0x80 [ 58.523378][ T4993] ? diUnmount+0x30/0x100 [ 58.527695][ T4993] panic+0x30f/0x770 [ 58.531626][ T4993] ? check_panic_on_warn+0x21/0xa0 [ 58.536734][ T4993] ? __memcpy_flushcache+0x2b0/0x2b0 [ 58.542007][ T4993] ? _raw_spin_unlock_irqrestore+0x12c/0x140 [ 58.547969][ T4993] ? _raw_spin_unlock+0x40/0x40 [ 58.552802][ T4993] ? print_report+0x4fb/0x540 [ 58.557470][ T4993] ? diUnmount+0xf3/0x100 [ 58.561783][ T4993] check_panic_on_warn+0x82/0xa0 [ 58.566709][ T4993] ? diUnmount+0xf3/0x100 [ 58.571024][ T4993] end_report+0x63/0x110 [ 58.575255][ T4993] kasan_report_invalid_free+0xf6/0x100 [ 58.580789][ T4993] ? diUnmount+0xf3/0x100 [ 58.585191][ T4993] ____kasan_slab_free+0xfb/0x120 [ 58.590201][ T4993] __kmem_cache_free+0x264/0x3c0 [ 58.595125][ T4993] ? diUnmount+0xf3/0x100 [ 58.599444][ T4993] diUnmount+0xf3/0x100 [ 58.603587][ T4993] jfs_umount+0x186/0x3a0 [ 58.607905][ T4993] jfs_put_super+0x8a/0x190 [ 58.612394][ T4993] ? jfs_free_inode+0x30/0x30 [ 58.617064][ T4993] generic_shutdown_super+0x134/0x340 [ 58.622423][ T4993] kill_block_super+0x84/0xf0 [ 58.627087][ T4993] deactivate_locked_super+0xa4/0x110 [ 58.632445][ T4993] cleanup_mnt+0x426/0x4c0 [ 58.636850][ T4993] ? _raw_spin_unlock_irq+0x23/0x50 [ 58.642121][ T4993] task_work_run+0x24a/0x300 [ 58.646696][ T4993] ? kasan_quarantine_put+0xd8/0x230 [ 58.651971][ T4993] ? task_work_cancel+0x2b0/0x2b0 [ 58.656978][ T4993] ? kmem_cache_free+0x297/0x520 [ 58.661902][ T4993] ? do_exit+0x68a/0x2290 [ 58.666218][ T4993] do_exit+0x68f/0x2290 [ 58.670365][ T4993] ? put_task_struct+0x80/0x80 [ 58.675115][ T4993] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 58.681087][ T4993] ? print_irqtrace_events+0x220/0x220 [ 58.686533][ T4993] ? _raw_spin_unlock_irq+0x23/0x50 [ 58.691728][ T4993] ? lockdep_hardirqs_on+0x98/0x140 [ 58.696913][ T4993] do_group_exit+0x206/0x2c0 [ 58.701487][ T4993] __x64_sys_exit_group+0x3f/0x40 [ 58.706498][ T4993] do_syscall_64+0x41/0xc0 [ 58.710917][ T4993] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 58.716814][ T4993] RIP: 0033:0x7ff1ec179679 [ 58.721240][ T4993] Code: Unable to access opcode bytes at 0x7ff1ec17964f. [ 58.728254][ T4993] RSP: 002b:00007ffdee8009c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 58.736666][ T4993] RAX: ffffffffffffffda RBX: 00007ff1ec1f03f0 RCX: 00007ff1ec179679 [ 58.744626][ T4993] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 58.752599][ T4993] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000002 [ 58.760564][ T4993] R10: 00000000018084a0 R11: 0000000000000246 R12: 00007ff1ec1f03f0 [ 58.768528][ T4993] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 58.776503][ T4993] [ 58.779806][ T4993] Kernel Offset: disabled [ 58.784116][ T4993] Rebooting in 86400 seconds..