------------[ cut here ]------------
WARNING: mm/slub.c:7144 at __kvmalloc_node_noprof+0x3f4/0x530 mm/slub.c:7144, CPU#1: syz.0.2871/14433
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 14433 Comm: syz.0.2871 Not tainted syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a08>] (dump_backtrace) from [<80201afc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:8341c57c r6:00000000 r5:82542718 r4:00000001
[<80201ae4>] (show_stack) from [<8021f604>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ae4>] (show_stack) from [<8021f604>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021f5a8>] (dump_stack_lvl) from [<8021f630>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:8341c57c r6:00000000 r5:846ee400 r4:83688d7c
[<8021f618>] (dump_stack) from [<80202610>] (vpanic+0x114/0x324 kernel/panic.c:661)
[<802024fc>] (vpanic) from [<80202854>] (trace_suspend_resume+0x0/0x100 kernel/panic.c:787)
 r7:8057a58c
[<80202820>] (panic) from [<80251ce4>] (check_panic_on_warn kernel/panic.c:533 [inline])
[<80202820>] (panic) from [<80251ce4>] (proc_taint+0x0/0x18c kernel/panic.c:528)
 r3:8340b188 r2:00000001 r1:82527f2c r0:8252f8fc
[<80251c6c>] (check_panic_on_warn) from [<802520a8>] (__warn+0x98/0x1a4 kernel/panic.c:1104)
[<80252010>] (__warn) from [<8025232c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:1136)
 r8:00000009 r7:8256952c r6:ec1f9d74 r5:846ee400 r4:00000000
[<802521b8>] (warn_slowpath_fmt) from [<8057a58c>] (__kvmalloc_node_noprof+0x3f4/0x530 mm/slub.c:7144)
 r10:000028c0 r9:ffffffff r8:00000000 r7:00000005 r6:00000030 r5:00000cc0
 r4:ffffffff
[<8057a198>] (__kvmalloc_node_noprof) from [<80cbee9c>] (udmabuf_create+0x1a0/0x51c drivers/dma-buf/udmabuf.c:390)
 r10:876e9500 r9:87646740 r8:874a3900 r7:00000005 r6:00000030 r5:ffffffff
 r4:ffffffff
[<80cbecfc>] (udmabuf_create) from [<80cbf62c>] (udmabuf_ioctl_create_list drivers/dma-buf/udmabuf.c:484 [inline])
[<80cbecfc>] (udmabuf_create) from [<80cbf62c>] (udmabuf_ioctl+0x180/0x258 drivers/dma-buf/udmabuf.c:499)
 r10:846ee400 r9:00000003 r8:874a3900 r7:20000500 r6:876e9500 r5:874a3900
 r4:20000500
[<80cbf4ac>] (udmabuf_ioctl) from [<805f3d14>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80cbf4ac>] (udmabuf_ioctl) from [<805f3d14>] (do_vfs_ioctl fs/ioctl.c:551 [inline])
[<80cbf4ac>] (udmabuf_ioctl) from [<805f3d14>] (__do_sys_ioctl fs/ioctl.c:595 [inline])
[<80cbf4ac>] (udmabuf_ioctl) from [<805f3d14>] (sys_ioctl+0x244/0xb5c fs/ioctl.c:583)
 r6:40087543 r5:874a3901 r4:00000000
[<805f3ad0>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xec1f9fa8 to 0xec1f9ff0)
9fa0:                   00000000 00000000 00000003 40087543 20000500 00000000
9fc0: 00000000 00000000 00356310 00000036 003562d8 00000000 00000001 76f6d0dc
9fe0: 76f6ce88 76f6ce78 00018ff8 001311f0
 r10:00000036 r9:846ee400 r8:8020029c r7:00000036 r6:00356310 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..