EXT4-fs error (device loop7): ext4_lookup:1787: inode #12: comm syz-executor: iget: bad i_size value: 2533274857506816 EXT4-fs error (device loop7): ext4_lookup:1787: inode #12: comm syz-executor: iget: bad i_size value: 2533274857506816 Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 1 UID: 0 PID: 6470 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:klist_put lib/klist.c:219 [inline] RIP: 0010:klist_del lib/klist.c:237 [inline] RIP: 0010:klist_remove+0x156/0x340 lib/klist.c:256 Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 5d 65 5a f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 3e 65 5a f6 49 8b 44 24 58 48 89 44 24 08 RSP: 0018:ffffc90004077880 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff8880285c5dc0 RCX: ffffffff9a9f4501 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc90004077980 R08: ffffffff905fe6a3 R09: 1ffffffff20bfcd4 R10: dffffc0000000000 R11: fffffbfff20bfcd5 R12: 0000000000000000 R13: 1ffff1100d03518c R14: ffff8880681a8c60 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124dc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000001e000 CR3: 0000000055aa6000 CR4: 00000000003526f0 Call Trace: device_move+0x18e/0x720 drivers/base/core.c:4702 hci_conn_del_sysfs+0xb8/0x1a0 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:170 [inline] hci_conn_del+0xc98/0x1290 net/bluetooth/hci_conn.c:1318 hci_conn_hash_flush+0x189/0x260 net/bluetooth/hci_conn.c:2747 hci_dev_close_sync+0x7f1/0xf50 net/bluetooth/hci_sync.c:5601 hci_dev_do_close net/bluetooth/hci_core.c:502 [inline] hci_unregister_dev+0x232/0x5b0 net/bluetooth/hci_core.c:2681 vhci_release+0x16d/0x1c0 drivers/bluetooth/hci_vhci.c:700 __fput+0x413/0xa50 fs/file_table.c:513 task_work_run+0x1d9/0x260 kernel/task_work.c:233 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x73a/0x2360 kernel/exit.c:1008 do_group_exit+0x22d/0x2f0 kernel/exit.c:1151 __do_sys_exit_group kernel/exit.c:1162 [inline] __se_sys_exit_group kernel/exit.c:1160 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1160 x64_sys_call+0x18c6/0x18d0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8bb319e159 Code: Unable to access opcode bytes at 0x7f8bb319e12f. RSP: 002b:00007ffcd8a251e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f8bb3234499 RCX: 00007f8bb319e159 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000075 R08: 0000000000000000 R09: 00007f8bb3234474 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcd8a264a0 R13: 00007f8bb3234474 R14: 00000000000475dd R15: 00007ffcd8a27570 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:klist_put lib/klist.c:219 [inline] RIP: 0010:klist_del lib/klist.c:237 [inline] RIP: 0010:klist_remove+0x156/0x340 lib/klist.c:256 Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 5d 65 5a f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 3e 65 5a f6 49 8b 44 24 58 48 89 44 24 08 RSP: 0018:ffffc90004077880 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff8880285c5dc0 RCX: ffffffff9a9f4501 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc90004077980 R08: ffffffff905fe6a3 R09: 1ffffffff20bfcd4 R10: dffffc0000000000 R11: fffffbfff20bfcd5 R12: 0000000000000000 R13: 1ffff1100d03518c R14: ffff8880681a8c60 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124dc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558b5354e8 CR3: 0000000055aa6000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 4d 89 f5 mov %r14,%r13 3: 49 c1 ed 03 shr $0x3,%r13 7: 43 80 7c 3d 00 00 cmpb $0x0,0x0(%r13,%r15,1) d: 74 08 je 0x17 f: 4c 89 f7 mov %r14,%rdi 12: e8 5d 65 5a f6 call 0xf65a6574 17: 4d 8b 26 mov (%r14),%r12 1a: 49 83 e4 fe and $0xfffffffffffffffe,%r12 1e: 49 8d 7c 24 58 lea 0x58(%r12),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 3e 65 5a f6 call 0xf65a6574 36: 49 8b 44 24 58 mov 0x58(%r12),%rax 3b: 48 89 44 24 08 mov %rax,0x8(%rsp)