------------[ cut here ]------------ WARNING: CPU: 0 PID: 15309 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: 15309 Comm: syz.0.13092 Not tainted 6.10.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<818d51b8>] (dump_backtrace) from [<818d52b4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe15cc [<818d529c>] (show_stack) from [<818f28e4>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d529c>] (show_stack) from [<818f28e4>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f2890>] (dump_stack_lvl) from [<818f2924>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f290c>] (dump_stack) from [<818d5d5c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d5c3c>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d5c3c>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca238 r0:81fd1e90 r7:8080f3d0 [<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 r7:8202efc4 r6:eb6e9db4 r5:84dc0c00 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8080f3d0>] (__fortify_report+0x6c/0x74 lib/string_helpers.c:1029) r10:8271c088 r9:00000003 r8:eb6e9ec3 r7:8425b400 r6:20000000 r5:836e2478 r4:83e94800 [<8080f364>] (__fortify_report) from [<818df5a8>] (__fortify_panic+0x10/0x14 lib/string_helpers.c:1036) [<818df598>] (__fortify_panic) from [<8062aab0>] (strnlen include/linux/fortify-string.h:235 [inline]) [<818df598>] (__fortify_panic) from [<8062aab0>] (sized_strscpy include/linux/fortify-string.h:309 [inline]) [<818df598>] (__fortify_panic) from [<8062aab0>] (ext4_ioctl_getlabel fs/ext4/ioctl.c:1154 [inline]) [<818df598>] (__fortify_panic) from [<8062aab0>] (ext4_fileattr_get+0x0/0x78 fs/ext4/ioctl.c:1609) [<8062899c>] (__ext4_ioctl) from [<8062b1ac>] (ext4_ioctl+0x10/0x14 fs/ext4/ioctl.c:1626) r10:84dc0c00 r9:00000003 r8:8560c000 r7:20000000 r6:8560c001 r5:00000000 r4:81009431 [<8062b19c>] (ext4_ioctl) from [<8051a444>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<8062b19c>] (ext4_ioctl) from [<8051a444>] (do_vfs_ioctl fs/ioctl.c:861 [inline]) [<8062b19c>] (ext4_ioctl) from [<8051a444>] (__do_sys_ioctl fs/ioctl.c:905 [inline]) [<8062b19c>] (ext4_ioctl) from [<8051a444>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893) [<8051a310>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xeb6e9fa8 to 0xeb6e9ff0) 9fa0: 00000000 00000000 00000003 81009431 20000000 00000000 9fc0: 00000000 00000000 00264320 00000036 7eda778e 7eda778f 003d0f00 76be90bc 9fe0: 76be8ec8 76be8eb8 00017e64 00130a00 r10:00000036 r9:84dc0c00 r8:8020029c r7:00000036 r6:00264320 r5:00000000 r4:00000000 Rebooting in 86400 seconds..