ubi0: attaching mtd0 ubi0: scanning is finished ================================================================== BUG: KASAN: slab-out-of-bounds in notifier_chain_register+0x528/0x61a kernel/notifier.c:27 Read of size 4 at addr ff600000305618e0 by task syz.2.6775/25075 CPU: 1 UID: 0 PID: 25075 Comm: syz.2.6775 Not tainted 6.13.0-rc3-syzkaller-g6f6ecce59d99 #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:132 [] show_stack+0x30/0x3c arch/riscv/kernel/stacktrace.c:138 [] __dump_stack lib/dump_stack.c:94 [inline] [] dump_stack_lvl+0x12e/0x1a6 lib/dump_stack.c:120 [] print_address_description mm/kasan/report.c:378 [inline] [] print_report+0x28e/0x5aa mm/kasan/report.c:489 [] kasan_report+0xec/0x118 mm/kasan/report.c:602 [] __asan_report_load4_noabort+0x12/0x1a mm/kasan/report_generic.c:380 [] notifier_chain_register+0x528/0x61a kernel/notifier.c:27 [] __blocking_notifier_chain_register kernel/notifier.c:264 [inline] [] blocking_notifier_chain_register+0x80/0xc6 kernel/notifier.c:282 [] register_reboot_notifier+0x22/0x2c kernel/reboot.c:118 [] ubi_wl_init+0xd0a/0x15c2 drivers/mtd/ubi/wl.c:1960 [] ubi_attach+0x15da/0x4f90 drivers/mtd/ubi/attach.c:1605 [] ubi_attach_mtd_dev+0x14d8/0x3646 drivers/mtd/ubi/build.c:1004 [] ctrl_cdev_ioctl+0x496/0x764 drivers/mtd/ubi/cdev.c:1043 [] vfs_ioctl fs/ioctl.c:51 [inline] [] __do_sys_ioctl fs/ioctl.c:906 [inline] [] __se_sys_ioctl fs/ioctl.c:892 [inline] [] __riscv_sys_ioctl+0x18e/0x1e2 fs/ioctl.c:892 [] syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90 [] do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331 [] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:197 Allocated by task 20862: stack_trace_save+0xa0/0xd2 kernel/stacktrace.c:122 kasan_save_stack+0x3e/0x6a mm/kasan/common.c:47 kasan_save_track+0x16/0x28 mm/kasan/common.c:68 kasan_save_alloc_info+0x30/0x3e mm/kasan/generic.c:568 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0xa0/0xa6 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x15e/0x3f4 mm/slub.c:4329 kmalloc_noprof include/linux/slab.h:901 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] tlb_initialize drivers/net/bonding/bond_alb.c:132 [inline] bond_alb_initialize+0x62/0x4a2 drivers/net/bonding/bond_alb.c:1311 bond_open+0xb36/0xea2 drivers/net/bonding/bond_main.c:4432 __dev_open+0x2be/0x4aa net/core/dev.c:1476 __dev_change_flags+0x4f8/0x6a4 net/core/dev.c:8949 dev_change_flags+0x74/0x136 net/core/dev.c:9021 do_setlink.constprop.0+0x16f2/0x3f9a net/core/rtnetlink.c:3109 rtnl_group_changelink net/core/rtnetlink.c:3737 [inline] __rtnl_newlink net/core/rtnetlink.c:3883 [inline] rtnl_newlink+0x156a/0x1aca net/core/rtnetlink.c:4011 rtnetlink_rcv_msg+0x9e2/0xdbe net/core/rtnetlink.c:6921 netlink_rcv_skb+0x216/0x3dc net/netlink/af_netlink.c:2542 rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6948 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x4f0/0x82c net/netlink/af_netlink.c:1347 netlink_sendmsg+0x864/0xdc6 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0xcc/0x160 net/socket.c:726 ____sys_sendmsg+0x5ce/0x79e net/socket.c:2583 ___sys_sendmsg+0x144/0x1e6 net/socket.c:2637 __sys_sendmsg+0x188/0x22a net/socket.c:2669 __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __riscv_sys_sendmsg+0x70/0xa2 net/socket.c:2672 syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90 do_trap_ecall_u+0x1aa/0x216 arch/riscv/kernel/traps.c:331 handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:197 The buggy address belongs to the object at ff60000030560000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 224 bytes to the right of allocated 6144-byte region [ff60000030560000, ff60000030561800) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xb0560 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0xffe000000000040(head|node=0|zone=0|lastcpupid=0x7ff) page_type: f5(slab) raw: 0ffe000000000040 ff60000011402280 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000020002 00000001f5000000 0000000000000000 head: 0ffe000000000040 ff60000011402280 0000000000000000 dead000000000001 head: 0000000000000000 0000000000020002 00000001f5000000 0000000000000000 head: 0ffe000000000003 ff1c000000c15801 ffffffffffffffff 0000000000000000 head: ff60000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3027, tgid 3027 (dhcpcd), ts 2904836349600, free_ts 2904776444500 __set_page_owner+0xa2/0x70c mm/page_owner.c:320 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0xf0/0x1e8 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0xdb0/0x2c0e mm/page_alloc.c:3474 __alloc_pages_noprof+0x1e8/0x1fc2 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0xf8/0x488 mm/mempolicy.c:2269 alloc_pages_noprof+0x174/0x2f0 mm/mempolicy.c:2348 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2589 [inline] new_slab+0x2b6/0x40e mm/slub.c:2642 ___slab_alloc+0x9c8/0x10e6 mm/slub.c:3830 __slab_alloc.constprop.0+0x60/0xb0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] __do_kmalloc_node mm/slub.c:4297 [inline] __kmalloc_node_track_caller_noprof+0x1dc/0x5e8 mm/slub.c:4317 kmalloc_reserve+0xfe/0x2be net/core/skbuff.c:609 __alloc_skb+0x152/0x42a net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1323 [inline] netlink_dump+0x2de/0x1100 net/netlink/af_netlink.c:2283 netlink_recvmsg+0x838/0xc3c net/netlink/af_netlink.c:1973 sock_recvmsg_nosec net/socket.c:1033 [inline] sock_recvmsg+0xd6/0x144 net/socket.c:1055 ____sys_recvmsg+0x20e/0x7c0 net/socket.c:2803 page last free pid 3027 tgid 3027 stack trace: __reset_page_owner+0x8c/0x400 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0x618/0x11d2 mm/page_alloc.c:2657 __free_pages+0x13a/0x1ba mm/page_alloc.c:4838 __free_slab+0xd0/0x176 mm/slub.c:2659 free_slab+0x38/0x1ae mm/slub.c:2682 discard_slab mm/slub.c:2688 [inline] __put_partials+0x174/0x1de mm/slub.c:3157 put_cpu_partial+0x17c/0x296 mm/slub.c:3232 __slab_free+0x112/0x3f6 mm/slub.c:4483 do_slab_free mm/slub.c:4565 [inline] ___cache_free+0x1a4/0x1de mm/slub.c:4671 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x76/0x168 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x158/0x1ba mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x5c/0x82 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_node_noprof+0x10a/0x3e8 mm/slub.c:4220 __alloc_skb+0x32c/0x42a net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1323 [inline] netlink_alloc_large_skb+0x7a/0x13e net/netlink/af_netlink.c:1196 netlink_sendmsg+0x660/0xdc6 net/netlink/af_netlink.c:1866 Memory state around the buggy address: ff60000030561780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff60000030561800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ff60000030561880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ff60000030561900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ff60000030561980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================