el0_svc+0x58/0x128 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 hfs: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7118 at fs/hfs/bnode.c:520 hfs_bnode_create+0x40c/0x4c4 fs/hfs/bnode.c:519 Modules linked in: CPU: 1 PID: 7118 Comm: syz.1.611 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfs_bnode_create+0x40c/0x4c4 fs/hfs/bnode.c:519 lr : hfs_bnode_create+0x40c/0x4c4 fs/hfs/bnode.c:519 sp : ffff800020d56e60 x29: ffff800020d56e80 x28: ffff7000041aade0 x27: dfff800000000000 x26: 0000000000000080 x25: 0000000000000000 x24: ffff0000c0bc1c88 x23: dfff800000000000 x22: 0000000000000000 x21: ffff0000ed424000 x20: 0000000000000000 x19: ffff0000c0bc1c00 x18: ffff800011b9bf60 x17: 1fffe00033eaa57e x16: ffff8000082d92bc x15: 0000000040000000 x14: 0000000000000001 x13: 1ffff000041aad34 x12: 0000000000ff0100 x11: ff00800008311668 x10: 0000000000000000 x9 : b7e2c689c0abf400 x8 : b7e2c689c0abf400 x7 : ffff800008257984 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000a890350 x2 : ffff00019f552d10 x1 : 0000000100000000 x0 : 000000000000001f Call trace: hfs_bnode_create+0x40c/0x4c4 fs/hfs/bnode.c:519 hfs_bmap_alloc+0x4fc/0x5ac fs/hfs/btree.c:291 hfs_btree_inc_height+0x108/0x890 fs/hfs/brec.c:490 hfs_brec_insert+0x5c4/0x97c fs/hfs/brec.c:148 __hfs_ext_write_extent+0x22c/0x484 fs/hfs/extent.c:124 __hfs_ext_cache_extent+0x84/0x74c fs/hfs/extent.c:174 hfs_ext_read_extent fs/hfs/extent.c:202 [inline] hfs_extend_file+0x2d0/0x1094 fs/hfs/extent.c:401 hfs_bmap_reserve+0xd4/0x3e0 fs/hfs/btree.c:234 hfs_cat_create+0x1d4/0x7b4 fs/hfs/catalog.c:104 hfs_create+0x6c/0xe0 fs/hfs/dir.c:202 lookup_open fs/namei.c:3490 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0xe18/0x26bc fs/namei.c:3788 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 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 irq event stamp: 4240 hardirqs last enabled at (4239): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (4239): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004 hardirqs last disabled at (4240): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4232): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (4232): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (4111): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernel BUG at fs/hfs/bnode.c:565! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 7118 Comm: syz.1.611 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfs_bnode_put+0x358/0x364 fs/hfs/bnode.c:565 lr : hfs_bnode_put+0x358/0x364 fs/hfs/bnode.c:565 sp : ffff800020d56f60 x29: ffff800020d56f60 x28: 0000000000000001 x27: dfff800000000000 x26: ffff7000041aae00 x25: ffff800020d57000 x24: 1fffe00018178380 x23: ffff0000ed424000 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000c0bc1c80 x19: ffff0000c0bc1c00 x18: ffff800011b9bf60 x17: 1fffe00033eaa57e x16: ffff8000082eef80 x15: 0000000040000000 x14: 0000000000000001 x13: 1fffe00018178390 x12: 0000000000ff0100 x11: ff00800008fa1f50 x10: 0000000000000000 x9 : ffff800008fa1f50 x8 : ffff0000f98c1bc0 x7 : ffff800008941b94 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008fa1c54 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: hfs_bnode_put+0x358/0x364 fs/hfs/bnode.c:565 hfs_btree_inc_height+0x458/0x890 fs/hfs/brec.c:544 hfs_brec_insert+0x5c4/0x97c fs/hfs/brec.c:148 __hfs_ext_write_extent+0x22c/0x484 fs/hfs/extent.c:124 __hfs_ext_cache_extent+0x84/0x74c fs/hfs/extent.c:174 hfs_ext_read_extent fs/hfs/extent.c:202 [inline] hfs_extend_file+0x2d0/0x1094 fs/hfs/extent.c:401 hfs_bmap_reserve+0xd4/0x3e0 fs/hfs/btree.c:234 hfs_cat_create+0x1d4/0x7b4 fs/hfs/catalog.c:104 hfs_create+0x6c/0xe0 fs/hfs/dir.c:202 lookup_open fs/namei.c:3490 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0xe18/0x26bc fs/namei.c:3788 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 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: aa1403e0 97e5155f 17ffffce 97d42593 (d4210000) ---[ end trace 0000000000000000 ]---