------------[ cut here ]------------
WARNING: mm/slub.c:7144 at __kvmalloc_node_noprof+0x3f4/0x530 mm/slub.c:7144, CPU#1: syz.1.2982/15097
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 15097 Comm: syz.1.2982 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 r5:82542828 r4:00000001
[<80201ae4>] (show_stack) from [<8021f600>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ae4>] (show_stack) from [<8021f600>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021f5a4>] (dump_stack_lvl) from [<8021f62c>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:8341c57c r6:00000000 r5:845a3200 r4:83688d7c
[<8021f614>] (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 r1:8252803c r0:8252fa0c
[<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 r7:8256963c r6:ec795d74 r5:845a3200 r4:00000000
[<802521b8>] (warn_slowpath_fmt) from [<8057a58c>] (__kvmalloc_node_noprof+0x3f4/0x530 mm/slub.c:7144)
 r10:000028c0 r9:ffffffff r8:00000000 r7:00000001 r6:ffffffff r5:00000cc0
 r4:ffffffff
[<8057a198>] (__kvmalloc_node_noprof) from [<80cbee90>] (init_udmabuf drivers/dma-buf/udmabuf.c:193 [inline])
[<8057a198>] (__kvmalloc_node_noprof) from [<80cbee90>] (udmabuf_create+0x158/0x51c drivers/dma-buf/udmabuf.c:386)
 r10:ec795ed0 r9:85d2d6c0 r8:85bdd280 r7:00000001 r6:ffffffff r5:ffffeffb
 r4:ffffffff
[<80cbed38>] (udmabuf_create) from [<80cbf6e4>] (udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:465 [inline])
[<80cbed38>] (udmabuf_create) from [<80cbf6e4>] (udmabuf_ioctl+0x1fc/0x258 drivers/dma-buf/udmabuf.c:496)
 r10:845a3200 r9:00000006 r8:85bdd280 r7:20000680 r6:b5403587 r5:ffffffff
 r4:f0000000
[<80cbf4e8>] (udmabuf_ioctl) from [<805f3d14>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80cbf4e8>] (udmabuf_ioctl) from [<805f3d14>] (do_vfs_ioctl fs/ioctl.c:551 [inline])
[<80cbf4e8>] (udmabuf_ioctl) from [<805f3d14>] (__do_sys_ioctl fs/ioctl.c:595 [inline])
[<80cbf4e8>] (udmabuf_ioctl) from [<805f3d14>] (sys_ioctl+0x244/0xb5c fs/ioctl.c:583)
 r6:40187542 r5:85bdd281 r4:00000000
[<805f3ad0>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xec795fa8 to 0xec795ff0)
5fa0:                   00000000 00000000 00000006 40187542 20000680 00000000
5fc0: 00000000 00000000 00356310 00000036 003562d8 00000000 00000001 76fe90dc
5fe0: 76fe8e88 76fe8e78 00018ff8 001311f0
 r10:00000036 r9:845a3200 r8:8020029c r7:00000036 r6:00356310 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..