loop0: detected capacity change from 0 to 1024 hfsplus: request for non-existent node 128 in B*Tree hfsplus: request for non-existent node 128 in B*Tree ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x9c/0x270 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff0000cd1c46c0 by task syz.0.55/4648 CPU: 0 PID: 4648 Comm: syz.0.55 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:427 kasan_report+0xd4/0x130 mm/kasan/report.c:531 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 hfsplus_bnode_read+0x9c/0x270 fs/hfsplus/bnode.c:32 hfsplus_bnode_dump+0x2ec/0x534 fs/hfsplus/bnode.c:-1 hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1dc/0x3e4 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x214/0x348 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x9a4/0xd6c fs/hfsplus/catalog.c:425 hfsplus_unlink+0x2c0/0x6a0 fs/hfsplus/dir.c:385 vfs_unlink+0x2f0/0x508 fs/namei.c:4322 do_unlinkat+0x4cc/0x70c fs/namei.c:4390 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 4648: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:936 [inline] __kmalloc+0xd8/0x1c4 mm/slab_common.c:949 kmalloc include/linux/slab.h:568 [inline] kzalloc include/linux/slab.h:699 [inline] __hfs_bnode_create+0xe4/0x6d4 fs/hfsplus/bnode.c:409 hfsplus_bnode_find+0x1f8/0xc60 fs/hfsplus/bnode.c:486 hfsplus_brec_find+0x134/0x4a0 fs/hfsplus/bfind.c:172 hfsplus_find_attr fs/hfsplus/attributes.c:160 [inline] hfsplus_delete_all_attrs+0x1ec/0x348 fs/hfsplus/attributes.c:371 hfsplus_delete_cat+0x9a4/0xd6c fs/hfsplus/catalog.c:425 hfsplus_unlink+0x2c0/0x6a0 fs/hfsplus/dir.c:385 vfs_unlink+0x2f0/0x508 fs/namei.c:4322 do_unlinkat+0x4cc/0x70c fs/namei.c:4390 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 insert_work+0x64/0x384 kernel/workqueue.c:1361 __queue_work+0xd48/0x136c kernel/workqueue.c:1520 queue_work_on+0xc0/0x16c kernel/workqueue.c:1548 queue_work include/linux/workqueue.h:512 [inline] netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:659 [inline] netdevice_event+0x718/0x840 drivers/infiniband/core/roce_gid_mgmt.c:802 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455 call_netdevice_notifiers_info+0xd0/0x120 net/core/dev.c:2001 __netdev_upper_dev_link+0x4d4/0x674 net/core/dev.c:7738 netdev_upper_dev_link+0xb4/0xf8 net/core/dev.c:7779 register_vlan_dev+0x364/0x714 net/8021q/vlan.c:184 vlan_newlink+0x394/0x4dc net/8021q/vlan_netlink.c:195 rtnl_newlink_create net/core/rtnetlink.c:3419 [inline] __rtnl_newlink net/core/rtnetlink.c:3639 [inline] rtnl_newlink+0x11a4/0x1b14 net/core/rtnetlink.c:3652 rtnetlink_rcv_msg+0x734/0xd9c net/core/rtnetlink.c:6150 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2493 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x65c/0x898 net/netlink/af_netlink.c:1337 netlink_sendmsg+0x844/0xb28 net/netlink/af_netlink.c:1859 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] __sys_sendto+0x3b8/0x508 net/socket.c:2153 __do_sys_sendto net/socket.c:2165 [inline] __se_sys_sendto net/socket.c:2161 [inline] __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2161 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Second to last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 insert_work+0x64/0x384 kernel/workqueue.c:1361 __queue_work+0xd48/0x136c kernel/workqueue.c:1520 queue_work_on+0xc0/0x16c kernel/workqueue.c:1548 queue_work include/linux/workqueue.h:512 [inline] call_usermodehelper_exec+0x238/0x48c kernel/umh.c:437 kobject_uevent_env+0x654/0x874 lib/kobject_uevent.c:633 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:657 device_del+0x7f0/0x9bc drivers/base/core.c:3905 serdev_controller_add+0x3b8/0x498 drivers/tty/serdev/core.c:799 serdev_tty_port_register+0x12c/0x20c drivers/tty/serdev/serdev-ttyport.c:289 tty_port_register_device_attr_serdev+0xc8/0x134 drivers/tty/tty_port.c:192 uart_add_one_port+0x91c/0x17b4 drivers/tty/serial/serial_core.c:3157 serial8250_register_ports+0x1d8/0x2c8 drivers/tty/serial/8250/8250_core.c:572 serial8250_init+0x148/0x184 drivers/tty/serial/8250/8250_core.c:1206 do_one_initcall+0x260/0xacc init/main.c:1298 do_initcall_level+0x154/0x214 init/main.c:1371 do_initcalls+0x58/0xac init/main.c:1387 do_basic_setup+0x8c/0xa0 init/main.c:1406 kernel_init_freeable+0x3a4/0x528 init/main.c:1626 kernel_init+0x24/0x29c init/main.c:1514 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 The buggy address belongs to the object at ffff0000cd1c4600 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 192 bytes inside of 256-byte region [ffff0000cd1c4600, ffff0000cd1c4700) The buggy address belongs to the physical page: page:0000000089131c51 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d1c4 head:0000000089131c51 order:1 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 fffffc00032a6a00 dead000000000002 ffff0000c0002480 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cd1c4580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cd1c4600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000cd1c4680: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000cd1c4700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cd1c4780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== Unable to handle kernel paging request at virtual address ffff7f180000933f KASAN: maybe wild-memory-access in range [0xfffff8c0000499f8-0xfffff8c0000499ff] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ab085000 [ffff7f180000933f] pgd=1000000233e59003, p4d=1000000233e59003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4648 Comm: syz.0.55 Tainted: G B 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : bytes_is_nonzero mm/kasan/generic.c:85 [inline] pc : memory_is_nonzero mm/kasan/generic.c:102 [inline] pc : memory_is_poisoned_n mm/kasan/generic.c:128 [inline] pc : memory_is_poisoned mm/kasan/generic.c:159 [inline] pc : check_region_inline mm/kasan/generic.c:180 [inline] pc : kasan_check_range+0x64/0x2a4 mm/kasan/generic.c:189 lr : memcpy+0x48/0x90 mm/kasan/shadow.c:65 sp : ffff800024357390 x29: ffff800024357390 x28: 0000000000000001 x27: 0000000040000000 x26: 1ffff00002a9fbfb x25: 0000000000000fff x24: 0000000000001000 x23: 0000000000000001 x22: ffff800009086ae4 x21: ffff8000243574a0 x20: fffff8c0000499ff x19: 0000000000000001 x18: 1fffe00036798576 x17: ffff800015afd000 x16: ffff800012276140 x15: 0000000000000002 x14: 00000000000000ff x13: ffff0000d2250000 x12: 0000000000000001 x11: 1fffff180000933f x10: 1fffff180000933f x9 : ffffffffffffffff x8 : ffff7f180000933f x7 : 1fffe00036798577 x6 : 00000000000000ff x5 : ffff8000243574c2 x4 : ffff0000fa43700c x3 : ffff800009086ae4 x2 : 0000000000000000 x1 : 0000000000000001 x0 : fffff8c0000499ff Call trace: bytes_is_nonzero mm/kasan/generic.c:84 [inline] memory_is_nonzero mm/kasan/generic.c:102 [inline] memory_is_poisoned_n mm/kasan/generic.c:128 [inline] memory_is_poisoned mm/kasan/generic.c:159 [inline] check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x64/0x2a4 mm/kasan/generic.c:189 memcpy+0x48/0x90 mm/kasan/shadow.c:65 memcpy_from_page include/linux/highmem.h:393 [inline] hfsplus_bnode_read+0x134/0x270 fs/hfsplus/bnode.c:32 hfsplus_bnode_dump+0x2ec/0x534 fs/hfsplus/bnode.c:-1 hfsplus_brec_remove+0x3d0/0x4a4 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x1dc/0x3e4 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x214/0x348 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x9a4/0xd6c fs/hfsplus/catalog.c:425 hfsplus_unlink+0x2c0/0x6a0 fs/hfsplus/dir.c:385 vfs_unlink+0x2f0/0x508 fs/namei.c:4322 do_unlinkat+0x4cc/0x70c fs/namei.c:4390 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 5400014c b4000b8c aa2a03e9 8b0b0129 (3940010a) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 5400014c b.gt 0x28 4: b4000b8c cbz x12, 0x174 8: aa2a03e9 mvn x9, x10 c: 8b0b0129 add x9, x9, x11 * 10: 3940010a ldrb w10, [x8] <-- trapping instruction