------------[ cut here ]------------ WARNING: mm/slub.c:6760 at free_large_kmalloc+0x15c/0x1f0 mm/slub.c:6760, CPU#1: syz-executor/5836 Modules linked in: CPU: 1 UID: 0 PID: 5836 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:free_large_kmalloc+0x15c/0x1f0 mm/slub.c:6760 Code: 44 89 f6 e8 f6 d0 fc ff 65 48 8b 05 fe ac 58 10 48 3b 44 24 08 75 57 48 83 c4 10 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 90 <0f> 0b 90 65 48 8b 05 d9 ac 58 10 48 3b 44 24 08 75 32 48 89 df 48 ------------[ cut here ]------------ WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278, CPU#1: syz-executor/5836 Modules linked in: CPU: 1 UID: 0 PID: 5836 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278 Code: 83 c4 f8 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 ee 01 00 00 44 89 65 00 49 83 c5 08 eb 13 e8 f7 45 1f 00 90 <0f> 0b 90 eb 05 e8 ec 45 1f 00 45 31 ed 4c 89 e8 48 83 c4 28 5b 41 RSP: 0000:ffffc9000422f3a0 EFLAGS: 00010093 RAX: ffffffff81a238a9 RBX: 00003fffffffffff RCX: ffff8880789b0000 RDX: 0000000000000000 RSI: 00003fffffffffff RDI: 0000000000000000 RBP: 0000000000000012 R08: ffffc9000422f4e7 R09: 1ffff92000845e9c R10: dffffc0000000000 R11: fffff52000845e9d R12: 0000000000000012 R13: 0000000000000000 R14: ffffffff8de2d650 R15: 1ffffffff1bca6c2 FS: 000055556d8e1500(0000) GS:ffff888125fc5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa3d4427000 CR3: 0000000077ae4000 CR4: 00000000003526f0 Call Trace: prb_reserve_in_last+0x574/0x18f0 kernel/printk/printk_ringbuffer.c:1447 vprintk_store+0x641/0xd00 kernel/printk/printk.c:2273 vprintk_emit+0x15f/0x590 kernel/printk/printk.c:2399 _printk+0xcf/0x120 kernel/printk/printk.c:2448 __show_regs+0x77/0x620 arch/x86/kernel/process_64.c:82 show_regs+0x36/0x70 arch/x86/kernel/dumpstack.c:483 __warn+0x182/0x4c0 kernel/panic.c:899 __report_bug lib/bug.c:195 [inline] report_bug+0x2be/0x4f0 lib/bug.c:215 handle_bug+0x84/0x160 arch/x86/kernel/traps.c:338 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:392 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616 RIP: 0010:free_large_kmalloc+0x15c/0x1f0 mm/slub.c:6760 Code: 44 89 f6 e8 f6 d0 fc ff 65 48 8b 05 fe ac 58 10 48 3b 44 24 08 75 57 48 83 c4 10 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 90 <0f> 0b 90 65 48 8b 05 d9 ac 58 10 48 3b 44 24 08 75 32 48 89 df 48 RSP: 0000:ffffc9000422fc48 EFLAGS: 00010206 RAX: 00000000ff000000 RBX: ffffea0000389000 RCX: ffffea0000389008 RDX: 0000000000000000 RSI: ffffffff8e240580 RDI: ffffea0000389000 RBP: 1ffff1100db81943 R08: ffffffff8f7d9077 R09: 1ffffffff1efb20e R10: dffffc0000000000 R11: fffffbfff1efb20f R12: 1ffff1100db81936 R13: dffffc0000000000 R14: ffff88806dc0c9b0 R15: ffff888028ec3708 ntfs_put_super+0x15b/0x1b0 fs/ntfs3/super.c:709 generic_shutdown_super+0x135/0x2c0 fs/super.c:643 kill_block_super+0x44/0x90 fs/super.c:1723 ntfs3_kill_sb+0x44/0x1b0 fs/ntfs3/super.c:1848 deactivate_locked_super+0xbc/0x130 fs/super.c:474 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1317 task_work_run+0x1d4/0x260 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x2e9/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f715c7909f7 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd679885e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f715c811d7d RCX: 00007f715c7909f7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd679886a0 RBP: 00007ffd679886a0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd67989730 R13: 00007f715c811d7d R14: 000000000002be47 R15: 00007ffd67989770