loop0: detected capacity change from 0 to 1024 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6799 at ./include/linux/mm.h:2345 rcu_read_unlock_sched include/linux/rcupdate.h:955 [inline] WARNING: CPU: 1 PID: 6799 at ./include/linux/mm.h:2345 pfn_valid include/linux/mmzone.h:2119 [inline] WARNING: CPU: 1 PID: 6799 at ./include/linux/mm.h:2345 lowmem_page_address include/linux/mm.h:2345 [inline] WARNING: CPU: 1 PID: 6799 at ./include/linux/mm.h:2345 kmap_local_page+0x370/0x4ec include/linux/highmem-internal.h:180 Modules linked in: CPU: 1 UID: 0 PID: 6799 Comm: syz-executor.0 Not tainted 6.15.0-rc4-syzkaller-00028-ge0f4c8dd9d2d #0 PREEMPT 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 : lowmem_page_address include/linux/rcupdate.h:955 [inline] pc : kmap_local_page+0x370/0x4ec include/linux/highmem-internal.h:180 lr : rcu_read_unlock_sched include/linux/rcupdate.h:955 [inline] lr : pfn_valid include/linux/mmzone.h:2119 [inline] lr : lowmem_page_address include/linux/mm.h:2345 [inline] lr : kmap_local_page+0x370/0x4ec include/linux/highmem-internal.h:180 sp : ffff80009e926c60 x29: ffff80009e926c60 x28: ffff0000deeb4040 x27: 1fffe00019c13c31 x26: ffff80008ec06000 x25: 1ffff00011d80da3 x24: dfff800000000000 x23: 0000020041000001 x22: 0000000000200000 x21: 0000000000000001 x20: 0000000000000000 x19: 0000000100000000 x18: 1fffe00036711a76 x17: ffff80008f2fe000 x16: ffff80008ada5e7c x15: 0000000000000001 x14: 1fffe000184aa179 x13: 0000000000000000 x12: 0000000000000000 x11: 00000000eaad5005 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c2c91e80 x7 : ffff800081280b80 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: rcu_read_unlock_sched include/linux/rcupdate.h:955 [inline] (P) pfn_valid include/linux/mmzone.h:2119 [inline] (P) lowmem_page_address include/linux/mm.h:2345 [inline] (P) kmap_local_page+0x370/0x4ec include/linux/highmem-internal.h:180 (P) hfsplus_bnode_move+0x3d8/0x678 fs/hfsplus/bnode.c:223 hfsplus_brec_insert+0x4c0/0xaa8 fs/hfsplus/brec.c:128 hfsplus_create_attr+0x2e8/0x368 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x910/0x1e88 fs/hfsplus/xattr.c:354 hfsplus_initxattrs+0x18c/0x244 fs/hfsplus/xattr_security.c:59 security_inode_init_security+0x6dc/0x7f4 security/security.c:1852 hfsplus_init_security+0x40/0x54 fs/hfsplus/xattr_security.c:71 hfsplus_fill_super+0x109c/0x1714 fs/hfsplus/super.c:568 get_tree_bdev_flags+0x360/0x414 fs/super.c:1636 get_tree_bdev+0x2c/0x3c fs/super.c:1659 hfsplus_get_tree+0x28/0x38 fs/hfsplus/super.c:640 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3884 path_mount+0x5b4/0xde0 fs/namespace.c:4211 do_mount fs/namespace.c:4224 [inline] __do_sys_mount fs/namespace.c:4435 [inline] __se_sys_mount fs/namespace.c:4412 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4412 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 4344 hardirqs last enabled at (4343): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (4343): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (4344): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (4084): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (4084): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (4079): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: out-of-bounds in hfsplus_bnode_move+0x418/0x678 fs/hfsplus/bnode.c:234 Read of size 18446744073709551602 at addr ffff80100000104e by task syz-executor.0/6799 CPU: 1 UID: 0 PID: 6799 Comm: syz-executor.0 Tainted: G W 6.15.0-rc4-syzkaller-00028-ge0f4c8dd9d2d #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 print_address_description+0xa8/0x254 mm/kasan/report.c:408 print_report+0x68/0x84 mm/kasan/report.c:521 kasan_report+0xb0/0x110 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189 __asan_memmove+0x3c/0x84 mm/kasan/shadow.c:94 hfsplus_bnode_move+0x418/0x678 fs/hfsplus/bnode.c:234 hfsplus_brec_insert+0x4c0/0xaa8 fs/hfsplus/brec.c:128 hfsplus_create_attr+0x2e8/0x368 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x910/0x1e88 fs/hfsplus/xattr.c:354 hfsplus_initxattrs+0x18c/0x244 fs/hfsplus/xattr_security.c:59 security_inode_init_security+0x6dc/0x7f4 security/security.c:1852 hfsplus_init_security+0x40/0x54 fs/hfsplus/xattr_security.c:71 hfsplus_fill_super+0x109c/0x1714 fs/hfsplus/super.c:568 get_tree_bdev_flags+0x360/0x414 fs/super.c:1636 get_tree_bdev+0x2c/0x3c fs/super.c:1659 hfsplus_get_tree+0x28/0x38 fs/hfsplus/super.c:640 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3884 path_mount+0x5b4/0xde0 fs/namespace.c:4211 do_mount fs/namespace.c:4224 [inline] __do_sys_mount fs/namespace.c:4435 [inline] __se_sys_mount fs/namespace.c:4412 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4412 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 The buggy address ffff80100000104e belongs to a vmalloc virtual mapping Memory state around the buggy address: Unable to handle kernel paging request at virtual address ffff7002000001e0 KASAN: probably wild-memory-access in range [0xffff801000000f00-0xffff801000000f07] 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, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001a5de2000 [ffff7002000001e0] pgd=0000000000000000, p4d=000000023ea64003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 6799 Comm: syz-executor.0 Tainted: G W 6.15.0-rc4-syzkaller-00028-ge0f4c8dd9d2d #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __pi_memcpy_generic+0x24/0x22c arch/arm64/lib/memcpy.S:71 lr : kasan_metadata_fetch_row+0x20/0x2c mm/kasan/report_generic.c:186 sp : ffff80009e926b30 x29: ffff80009e926b30 x28: ffff0000deeb4040 x27: 1fffe00019c13c31 x26: fffffffffffffff8 x25: ffff801000001040 x24: 00000000fffffff2 x23: 0000000000000000 x22: ffff801000000f00 x21: ffff000000000000 x20: ffff801000001000 x19: ffff80100000104e x18: 1fffe00036711a76 x17: 0000000000000000 x16: ffff80008ad0f308 x15: 0000000000000001 x14: 0000000000000001 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700013d24d6e x10: 0000000000ff0100 x9 : 69d768cbc0457d00 x8 : dfff800000000000 x7 : 0000000000000000 x6 : 000000000000003a x5 : ffff80009e926b58 x4 : ffff7002000001f0 x3 : ffff80008ad7cfa4 x2 : 0000000000000010 x1 : ffff7002000001e0 x0 : ffff80009e926b48 Call trace: __pi_memcpy_generic+0x24/0x22c arch/arm64/lib/memcpy.S:70 (P) print_memory_metadata+0x60/0x310 mm/kasan/report.c:497 print_report+0x70/0x84 mm/kasan/report.c:522 kasan_report+0xb0/0x110 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189 __asan_memmove+0x3c/0x84 mm/kasan/shadow.c:94 hfsplus_bnode_move+0x418/0x678 fs/hfsplus/bnode.c:234 hfsplus_brec_insert+0x4c0/0xaa8 fs/hfsplus/brec.c:128 hfsplus_create_attr+0x2e8/0x368 fs/hfsplus/attributes.c:252 __hfsplus_setxattr+0x910/0x1e88 fs/hfsplus/xattr.c:354 hfsplus_initxattrs+0x18c/0x244 fs/hfsplus/xattr_security.c:59 security_inode_init_security+0x6dc/0x7f4 security/security.c:1852 hfsplus_init_security+0x40/0x54 fs/hfsplus/xattr_security.c:71 hfsplus_fill_super+0x109c/0x1714 fs/hfsplus/super.c:568 get_tree_bdev_flags+0x360/0x414 fs/super.c:1636 get_tree_bdev+0x2c/0x3c fs/super.c:1659 hfsplus_get_tree+0x28/0x38 fs/hfsplus/super.c:640 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3884 path_mount+0x5b4/0xde0 fs/namespace.c:4211 do_mount fs/namespace.c:4224 [inline] __do_sys_mount fs/namespace.c:4435 [inline] __se_sys_mount fs/namespace.c:4412 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4412 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: f100805f 540003c8 f100405f 540000c3 (a9401c26) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f100805f cmp x2, #0x20 4: 540003c8 b.hi 0x7c // b.pmore 8: f100405f cmp x2, #0x10 c: 540000c3 b.cc 0x24 // b.lo, b.ul, b.last * 10: a9401c26 ldp x6, x7, [x1] <-- trapping instruction