9fe0: 76f1f048 76f1f038 00018d1c 0004b600 r10:00000036 r9:86dc8000 r8:80200224 r7:00000036 r6:00000000 r5:00000000 r4:00000000 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6189 at block/genhd.c:617 __device_add_disk+0x5e8/0x698 block/genhd.c:617 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6189 Comm: syz-executor.1 Not tainted 5.12.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<81802550>] (dump_backtrace) from [<818027c4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:252) r7:00000080 r6:60000093 r5:00000000 r4:82b58344 [<818027ac>] (show_stack) from [<81809e98>] (__dump_stack lib/dump_stack.c:79 [inline]) [<818027ac>] (show_stack) from [<81809e98>] (dump_stack+0xb8/0xe8 lib/dump_stack.c:120) [<81809de0>] (dump_stack) from [<81803358>] (panic+0x130/0x378 kernel/panic.c:231) r7:81f48198 r6:82a390a4 r5:00000000 r4:82c6b0d0 [<81803228>] (panic) from [<802446f4>] (__warn+0xb0/0x164 kernel/panic.c:605) r3:82a2248c r2:00000000 r1:821137b8 r0:81f48198 r7:00000269 [<80244644>] (__warn) from [<81803608>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:628) r7:807b251c r6:00000269 r5:81f9dbf0 r4:00000000 [<818035a4>] (warn_slowpath_fmt) from [<807b251c>] (__device_add_disk+0x5e8/0x698 block/genhd.c:617) r8:842643f8 r7:00000000 r6:00000000 r5:84264380 r4:86e26e00 [<807b1f34>] (__device_add_disk) from [<807b25e0>] (device_add_disk+0x14/0x18 block/genhd.c:639) r10:ffffffff r9:86e26e00 r8:00000000 r7:833ba8c8 r6:86dc9ee4 r5:00000000 r4:86f28800 [<807b25cc>] (device_add_disk) from [<80a4b964>] (add_disk include/linux/genhd.h:231 [inline]) [<807b25cc>] (device_add_disk) from [<80a4b964>] (loop_add+0x208/0x28c drivers/block/loop.c:2172) [<80a4b75c>] (loop_add) from [<80a4be10>] (loop_control_ioctl drivers/block/loop.c:2268 [inline]) [<80a4b75c>] (loop_add) from [<80a4be10>] (loop_control_ioctl+0xb4/0x1c0 drivers/block/loop.c:2250) r10:834eb5e8 r9:00000005 r8:86e6a280 r7:00000000 r6:00000000 r5:00004c80 r4:00000000 [<80a4bd5c>] (loop_control_ioctl) from [<804f33f4>] (vfs_ioctl fs/ioctl.c:48 [inline]) [<80a4bd5c>] (loop_control_ioctl) from [<804f33f4>] (do_vfs_ioctl fs/ioctl.c:725 [inline]) [<80a4bd5c>] (loop_control_ioctl) from [<804f33f4>] (__do_sys_ioctl fs/ioctl.c:751 [inline]) [<80a4bd5c>] (loop_control_ioctl) from [<804f33f4>] (sys_ioctl+0x120/0xaa4 fs/ioctl.c:739) r6:86e6a281 r5:00000000 r4:00004c80 [<804f32d4>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64) Exception stack(0x86dc9fa8 to 0x86dc9ff0) 9fa0: 00000000 00000000 00000005 00004c80 00000000 00000000 9fc0: 00000000 00000000 00000000 00000036 7e87b32a 76f1f6d0 7e87b4b4 76f1f20c 9fe0: 76f1f048 76f1f038 00018d1c 0004b600 r10:00000036 r9:86dc8000 r8:80200224 r7:00000036 r6:00000000 r5:00000000 r4:00000000 Rebooting in 86400 seconds..