------------[ cut here ]------------ WARNING: CPU: 0 PID: 29447 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x150/0x154 drivers/gpu/drm/vkms/vkms_crtc.c:21 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 29447 Comm: syz-executor.0 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 r6:60000193 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 r1:5b71e000 r0:81f48198 r7:00000015 [<80244644>] (__warn) from [<81803608>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:628) r7:809fa964 r6:00000015 r5:81fcbd70 r4:00000000 [<818035a4>] (warn_slowpath_fmt) from [<809fa964>] (vkms_vblank_simulate+0x150/0x154 drivers/gpu/drm/vkms/vkms_crtc.c:21) r8:00fe4c00 r7:83646720 r6:82a22498 r5:00000000 r4:83647390 [<809fa814>] (vkms_vblank_simulate) from [<80307ebc>] (__run_hrtimer kernel/time/hrtimer.c:1537 [inline]) [<809fa814>] (vkms_vblank_simulate) from [<80307ebc>] (__hrtimer_run_queues+0xd4/0x690 kernel/time/hrtimer.c:1601) r9:86e84000 r8:ddfc53e0 r7:ddfc5380 r6:82a22498 r5:00000000 r4:83647390 [<80307de8>] (__hrtimer_run_queues) from [<80308da0>] (hrtimer_interrupt+0x14c/0x2e0 kernel/time/hrtimer.c:1663) r10:ddfc54d8 r9:ddfc5498 r8:ddfc5458 r7:ddfc54a0 r6:ddfc54e0 r5:20000193 r4:ddfc5380 [<80308c54>] (hrtimer_interrupt) from [<8114c308>] (timer_handler drivers/clocksource/arm_arch_timer.c:647 [inline]) [<80308c54>] (hrtimer_interrupt) from [<8114c308>] (arch_timer_handler_virt+0x30/0x38 drivers/clocksource/arm_arch_timer.c:658) r10:86e85bb0 r9:86e85c18 r8:86e85b80 r7:8348d940 r6:82a22c34 r5:0000001c r4:8348b000 [<8114c2d8>] (arch_timer_handler_virt) from [<802df904>] (handle_percpu_devid_irq+0xa4/0x19c kernel/irq/chip.c:930) [<802df860>] (handle_percpu_devid_irq) from [<802d8730>] (generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]) [<802df860>] (handle_percpu_devid_irq) from [<802d8730>] (generic_handle_irq kernel/irq/irqdesc.c:652 [inline]) [<802df860>] (handle_percpu_devid_irq) from [<802d8730>] (__handle_domain_irq+0xb0/0x120 kernel/irq/irqdesc.c:689) r10:86e85bb0 r9:86e85c18 r8:00000001 r7:00000000 r6:828ad498 r5:00000000 r4:828ad498 r3:00010000 [<802d8680>] (__handle_domain_irq) from [<8088af70>] (handle_domain_irq include/linux/irqdesc.h:176 [inline]) [<802d8680>] (__handle_domain_irq) from [<8088af70>] (gic_handle_irq+0x84/0xac drivers/irqchip/irq-gic.c:370) r10:00000000 r9:86e84000 r8:e000200c r7:828ad4bc r6:e0002000 r5:86e85c18 r4:82a22c34 [<8088aeec>] (gic_handle_irq) from [<80200abc>] (__irq_svc+0x5c/0x94 arch/arm/kernel/entry-armv.S:205) Exception stack(0x86e85c18 to 0x86e85c60) 5c00: 00000000 821137b8 5c20: 00000001 20000093 82b58344 00000000 20000013 00000000 8341c000 82a22980 5c40: 00000000 86e85c84 86e85c10 86e85c68 8181dacc 81809ec4 20000013 ffffffff r9:86e84000 r8:8341c000 r7:86e85c4c r6:ffffffff r5:20000013 r4:81809ec4 [<81809de0>] (dump_stack) from [<80857268>] (fail_dump lib/fault-inject.c:52 [inline]) [<81809de0>] (dump_stack) from [<80857268>] (should_fail+0x194/0x1f4 lib/fault-inject.c:146) r7:00001000 r6:00000c40 r5:00000c40 r4:82b25240 [<808570d4>] (should_fail) from [<804b8404>] (__should_failslab+0x64/0x78 mm/failslab.c:33) r5:00000c40 r4:834016c0 [<804b83a0>] (__should_failslab) from [<8045b90c>] (should_failslab+0x10/0x20 mm/slab_common.c:1273) [<8045b8fc>] (should_failslab) from [<804b4bc4>] (slab_pre_alloc_hook mm/slab.h:499 [inline]) [<8045b8fc>] (should_failslab) from [<804b4bc4>] (slab_alloc_node mm/slub.c:2826 [inline]) [<8045b8fc>] (should_failslab) from [<804b4bc4>] (slab_alloc mm/slub.c:2915 [inline]) [<8045b8fc>] (should_failslab) from [<804b4bc4>] (__kmalloc+0x78/0x35c mm/slub.c:4051) [<804b4b4c>] (__kmalloc) from [<8073147c>] (kmalloc include/linux/slab.h:559 [inline]) [<804b4b4c>] (__kmalloc) from [<8073147c>] (tomoyo_realpath_from_path+0x48/0x1a0 security/tomoyo/realpath.c:254) r10:00000000 r9:fffff000 r8:8341c000 r7:836a1288 r6:00001000 r5:00000000 r4:83de3780 [<80731434>] (tomoyo_realpath_from_path) from [<8072d450>] (tomoyo_get_realpath security/tomoyo/file.c:151 [inline]) [<80731434>] (tomoyo_realpath_from_path) from [<8072d450>] (tomoyo_path_number_perm+0xb8/0x248 security/tomoyo/file.c:723) r10:00000000 r9:836a1288 r8:84431b30 r7:00000000 r6:00000006 r5:81ac8740 r4:836a1288 r3:00000000 [<8072d398>] (tomoyo_path_number_perm) from [<80731f24>] (tomoyo_path_chown+0x6c/0x78 security/tomoyo/tomoyo.c:360) r10:fffff000 r9:836a1288 r8:84431b30 r7:00000000 r6:00000000 r5:836a1288 r4:00000000 [<80731eb8>] (tomoyo_path_chown) from [<806f2164>] (security_path_chown+0x54/0x70 security/security.c:1168) r5:836a1288 r4:82128d94 [<806f2110>] (security_path_chown) from [<804d7184>] (chown_common+0x144/0x22c fs/open.c:680) r7:00000000 r6:00000000 r5:84431bec r4:00000000 [<804d7040>] (chown_common) from [<804d7450>] (vfs_fchown fs/open.c:750 [inline]) [<804d7040>] (chown_common) from [<804d7450>] (vfs_fchown+0x64/0x84 fs/open.c:742) r10:0000005f r9:86e84000 r8:80200224 r7:00000000 r6:00000000 r5:836a1280 r4:00000000 [<804d73ec>] (vfs_fchown) from [<804d74a4>] (ksys_fchown+0x34/0x60 fs/open.c:761) r7:836a1280 r6:00000000 r5:00000000 r4:836a1281 [<804d7470>] (ksys_fchown) from [<80326000>] (__do_sys_fchown16 kernel/uid16.c:35 [inline]) [<804d7470>] (ksys_fchown) from [<80326000>] (sys_fchown16+0x38/0x3c kernel/uid16.c:33) r7:0000005f r6:00000000 r5:00000000 r4:00000000 [<80325fc8>] (sys_fchown16) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64) Exception stack(0x86e85fa8 to 0x86e85ff0) 5fa0: 00000000 00000000 00000003 00000000 00000000 00000000 5fc0: 00000000 00000000 00000000 0000005f 7ea9131a 76ffd6d0 7ea914a4 76ffd20c 5fe0: 76ffd048 76ffd038 00018e9c 0004ba40 Rebooting in 86400 seconds..