------------[ cut here ]------------ WARNING: CPU: 1 PID: 16930 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: 1 PID: 16930 Comm: syz-executor.1 Not tainted 6.10.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<818d4558>] (dump_backtrace) from [<818d4654>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe1440 [<818d463c>] (show_stack) from [<818f1c7c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d463c>] (show_stack) from [<818f1c7c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f1c28>] (dump_stack_lvl) from [<818f1cbc>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f1ca4>] (dump_stack) from [<818d50fc>] (panic+0x120/0x358 kernel/panic.c:347) [<818d4fdc>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d4fdc>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca0b0 r0:81fd1d00 r7:8080f6b8 [<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 r7:8202ef84 r6:e04d1db4 r5:8375b000 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8080f6b8>] (__fortify_report+0x6c/0x74 lib/string_helpers.c:1029) r10:8271c088 r9:00000004 r8:e04d1ec3 r7:83e4ec00 r6:20001300 r5:837ea478 r4:82e24000 [<8080f64c>] (__fortify_report) from [<818de940>] (__fortify_panic+0x10/0x14 lib/string_helpers.c:1036) [<818de930>] (__fortify_panic) from [<8062af70>] (strnlen include/linux/fortify-string.h:235 [inline]) [<818de930>] (__fortify_panic) from [<8062af70>] (sized_strscpy include/linux/fortify-string.h:309 [inline]) [<818de930>] (__fortify_panic) from [<8062af70>] (ext4_ioctl_getlabel fs/ext4/ioctl.c:1154 [inline]) [<818de930>] (__fortify_panic) from [<8062af70>] (ext4_fileattr_get+0x0/0x78 fs/ext4/ioctl.c:1609) [<80628e5c>] (__ext4_ioctl) from [<8062b66c>] (ext4_ioctl+0x10/0x14 fs/ext4/ioctl.c:1626) r10:8375b000 r9:00000004 r8:84ab96c0 r7:20001300 r6:84ab96c1 r5:00000000 r4:81009431 [<8062b65c>] (ext4_ioctl) from [<8051a9f4>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<8062b65c>] (ext4_ioctl) from [<8051a9f4>] (do_vfs_ioctl fs/ioctl.c:861 [inline]) [<8062b65c>] (ext4_ioctl) from [<8051a9f4>] (__do_sys_ioctl fs/ioctl.c:905 [inline]) [<8062b65c>] (ext4_ioctl) from [<8051a9f4>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893) [<8051a8c0>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xe04d1fa8 to 0xe04d1ff0) 1fa0: 00000000 00000000 00000004 81009431 20001300 00000000 1fc0: 00000000 00000000 001542c8 00000036 7e96f336 7e96f337 003d0f00 76bad0fc 1fe0: 76bacf08 76bacef8 00016f30 00051660 r10:00000036 r9:8375b000 r8:8020029c r7:00000036 r6:001542c8 r5:00000000 r4:00000000 Rebooting in 86400 seconds..