------------[ cut here ]------------ WARNING: CPU: 1 PID: 5919 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: 5919 Comm: syz.1.32347 Not tainted 6.10.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<818d4a58>] (dump_backtrace) from [<818d4b54>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe14ec [<818d4b3c>] (show_stack) from [<818f2184>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d4b3c>] (show_stack) from [<818f2184>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f2130>] (dump_stack_lvl) from [<818f21c4>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f21ac>] (dump_stack) from [<818d55fc>] (panic+0x120/0x358 kernel/panic.c:347) [<818d54dc>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d54dc>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fca15c r0:81fd1dac r7:8080f158 [<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 r7:8202eedc r6:ecb4ddb4 r5:836bc800 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8080f158>] (__fortify_report+0x6c/0x74 lib/string_helpers.c:1029) r10:8271c088 r9:00000004 r8:ecb4dec3 r7:8410d000 r6:20000100 r5:8381f478 r4:82eed800 [<8080f0ec>] (__fortify_report) from [<818dee48>] (__fortify_panic+0x10/0x14 lib/string_helpers.c:1036) [<818dee38>] (__fortify_panic) from [<8062a840>] (strnlen include/linux/fortify-string.h:235 [inline]) [<818dee38>] (__fortify_panic) from [<8062a840>] (sized_strscpy include/linux/fortify-string.h:309 [inline]) [<818dee38>] (__fortify_panic) from [<8062a840>] (ext4_ioctl_getlabel fs/ext4/ioctl.c:1154 [inline]) [<818dee38>] (__fortify_panic) from [<8062a840>] (ext4_fileattr_get+0x0/0x78 fs/ext4/ioctl.c:1609) [<8062872c>] (__ext4_ioctl) from [<8062af3c>] (ext4_ioctl+0x10/0x14 fs/ext4/ioctl.c:1626) r10:836bc800 r9:00000004 r8:84c5dc00 r7:20000100 r6:84c5dc01 r5:00000000 r4:81009431 [<8062af2c>] (ext4_ioctl) from [<8051a1d4>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<8062af2c>] (ext4_ioctl) from [<8051a1d4>] (do_vfs_ioctl fs/ioctl.c:861 [inline]) [<8062af2c>] (ext4_ioctl) from [<8051a1d4>] (__do_sys_ioctl fs/ioctl.c:905 [inline]) [<8062af2c>] (ext4_ioctl) from [<8051a1d4>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893) [<8051a0a0>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xecb4dfa8 to 0xecb4dff0) dfa0: 00000000 00000000 00000004 81009431 20000100 00000000 dfc0: 00000000 00000000 00264318 00000036 7eb1379e 7eb1379f 003d0f00 76bd10bc dfe0: 76bd0ec8 76bd0eb8 00017e64 00130c30 r10:00000036 r9:836bc800 r8:8020029c r7:00000036 r6:00264318 r5:00000000 r4:00000000 Rebooting in 86400 seconds..