Hello, syzbot found the following issue on: HEAD commit: 7d2a07b76933 Linux 5.14 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=150f460d300000 kernel config: https://syzkaller.appspot.com/x/.config?x=f8211b06020972e8 dashboard link: https://syzkaller.appspot.com/bug?extid=6dfe749a37c4895fd959 compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 userspace arch: riscv64 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6dfe749a37c4895fd959@xxxxxxxxxxxxxxxxxxxxxxxxx Unable to handle kernel paging request at virtual address 0000000000400dc0 Oops [#1] Modules linked in: CPU: 0 PID: 2973 Comm: dhcpcd-run-hook Not tainted 5.14.0-syzkaller #0 Hardware name: riscv-virtio,qemu (DT) epc : slab_alloc_node mm/slub.c:2900 [inline] epc : slab_alloc mm/slub.c:2967 [inline] epc : __kmalloc+0xce/0x388 mm/slub.c:4111 ra : slab_pre_alloc_hook mm/slab.h:494 [inline] ra : slab_alloc_node mm/slub.c:2880 [inline] ra : slab_alloc mm/slub.c:2967 [inline] ra : __kmalloc+0x6e/0x388 mm/slub.c:4111 epc : ffffffff803e3568 ra : ffffffff803e3508 sp : ffffffe00b36ba70 gp : ffffffff83f967d8 tp : ffffffe0081ac740 t0 : 0000000000000000 t1 : 0000000000000001 t2 : 0000000000000000 s0 : ffffffe00b36bb10 s1 : ffffffe005602500 a0 : 0000000000000000 a1 : ffffffe00b36be5c a2 : 1ffffffc01035a0f a3 : 0000000000400dc0 a4 : 0000000000000001 a5 : ffffffff82e4b410 a6 : 0000000000f00000 a7 : ffffffff8038ca52 s2 : ffffffff83f96adc s3 : 0000000000400dc0 s4 : 0000000000000010 s5 : ffffffff807e81f8 s6 : ffffffff83f9a0d0 s7 : 0000000000000000 s8 : 0000000000400dc0 s9 : 0000000000000001 s10: 0000000000000000 s11: 0000000000000000 t3 : 2e9dd4183131c900 t4 : ffffffc7f0788989 t5 : ffffffc7f078898a t6 : ffffffe00b07e9c0 status: 0000000000000120 badaddr: 0000000000400dc0 cause: 000000000000000d [<ffffffff803e3568>] slab_alloc_node mm/slub.c:2900 [inline] [<ffffffff803e3568>] slab_alloc mm/slub.c:2967 [inline] [<ffffffff803e3568>] __kmalloc+0xce/0x388 mm/slub.c:4111 [<ffffffff807e81f8>] kmalloc include/linux/slab.h:596 [inline] [<ffffffff807e81f8>] kzalloc+0x26/0x32 include/linux/slab.h:721 [<ffffffff807ebea4>] lsm_cred_alloc security/security.c:537 [inline] [<ffffffff807ebea4>] security_prepare_creds+0xde/0x106 security/security.c:1691 [<ffffffff8007ba92>] prepare_creds+0x40e/0x5ae kernel/cred.c:293 [<ffffffff8007d014>] copy_creds+0x62/0x908 kernel/cred.c:367 [<ffffffff800216ba>] copy_process+0xb52/0x3a98 kernel/fork.c:1992 [<ffffffff8002480c>] kernel_clone+0x94/0x878 kernel/fork.c:2509 [<ffffffff80025074>] __do_sys_clone+0x84/0xac kernel/fork.c:2626 [<ffffffff80025336>] sys_clone+0x32/0x44 kernel/fork.c:2594 [<ffffffff80005150>] ret_from_syscall+0x0/0x2 ---[ end trace 90d68454cb946b7b ]--- --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
