------------[ cut here ]------------ WARNING: CPU: 0 PID: 16077 at lib/string_helpers.c:1029 __fortify_report+0x6c/0x74 lib/string_helpers.c:1029 strnlen: detected buffer overflow: 17 byte read of buffer size 16 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 16077 Comm: syz.1.14312 Not tainted 6.10.0-rc6-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<818d50b8>] (dump_backtrace) from [<818d51b4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe156c [<818d519c>] (show_stack) from [<818f27e4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d519c>] (show_stack) from [<818f27e4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f2790>] (dump_stack_lvl) from [<818f2824>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f280c>] (dump_stack) from [<818d5c5c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d5b3c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d5b3c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca1d8 r0:81fd1e30 r7:8080f300 [<80243d58>] (check_panic_on_warn) from [<80243fc0>] (__warn+0x7c/0x180 kernel/panic.c:693) [<80243f44>] (__warn) from [<802442ac>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:726) r8:00000009 r7:8202ef64 r6:dfd71db4 r5:83ec9800 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8080f300>] (__fortify_report+0x6c/0x74 lib/string_helpers.c:1029) r10:8271c088 r9:00000003 r8:dfd71ec3 r7:82fc7400 r6:20000180 r5:8387b478 r4:836b3000 [<8080f294>] (__fortify_report) from [<818df4a8>] (__fortify_panic+0x10/0x14 lib/string_helpers.c:1036) [<818df498>] (__fortify_panic) from [<8062a9e0>] (strnlen include/linux/fortify-string.h:235 [inline]) [<818df498>] (__fortify_panic) from [<8062a9e0>] (sized_strscpy include/linux/fortify-string.h:309 [inline]) [<818df498>] (__fortify_panic) from [<8062a9e0>] (ext4_ioctl_getlabel fs/ext4/ioctl.c:1154 [inline]) [<818df498>] (__fortify_panic) from [<8062a9e0>] (ext4_fileattr_get+0x0/0x78 fs/ext4/ioctl.c:1609) [<806288cc>] (__ext4_ioctl) from [<8062b0dc>] (ext4_ioctl+0x10/0x14 fs/ext4/ioctl.c:1626) r10:83ec9800 r9:00000003 r8:85363e40 r7:20000180 r6:85363e41 r5:00000000 r4:81009431 [<8062b0cc>] (ext4_ioctl) from [<8051a374>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<8062b0cc>] (ext4_ioctl) from [<8051a374>] (do_vfs_ioctl fs/ioctl.c:861 [inline]) [<8062b0cc>] (ext4_ioctl) from [<8051a374>] (__do_sys_ioctl fs/ioctl.c:905 [inline]) [<8062b0cc>] (ext4_ioctl) from [<8051a374>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893) [<8051a240>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xdfd71fa8 to 0xdfd71ff0) 1fa0: 00000000 00000000 00000003 81009431 20000180 00000000 1fc0: 00000000 00000000 00264320 00000036 7e82378e 7e82378f 003d0f00 76ba30bc 1fe0: 76ba2ec8 76ba2eb8 00017e64 00130a00 r10:00000036 r9:83ec9800 r8:8020029c r7:00000036 r6:00264320 r5:00000000 r4:00000000 Rebooting in 86400 seconds..