------------[ cut here ]------------
WARNING: CPU: 1 PID: 6390 at arch/x86/mm/tlb.c:515 switch_mm_irqs_off+0x890/0xbc0 arch/x86/mm/tlb.c:515
Modules linked in:
CPU: 1 PID: 6390 Comm: syz-executor.3 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:switch_mm_irqs_off+0x890/0xbc0 arch/x86/mm/tlb.c:515
Code: ff 44 8d 6b 02 48 63 d3 49 8d 8e 18 06 00 00 4d 63 ed 49 c1 e5 04 4d 8d 8d 40 d5 03 00 49 81 c5 48 d5 03 00 e9 75 fd ff ff 90 <0f> 0b 90 e9 e3 f7 ff ff 90 0f 0b 90 e8 df f5 ff ff e9 20 f8 ff ff
RSP: 0018:ffffc9000d0bf350 EFLAGS: 00010202
RAX: 0000000000000296 RBX: ffff888053570000 RCX: ffff888014c82f80
RDX: 1ffff110029906ca RSI: ffffffff8b6f03e0 RDI: ffffffff8b6f0420
RBP: ffffffff8d93f200 R08: 0000000000000000 R09: ffffed1002990609
R10: ffff888014c8304b R11: 0000000000000000 R12: ffff88802c33f200
R13: ffff88801db14880 R14: ffff888014c82f80 R15: ffff88802c33e700
FS:  0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002d221000 CR3: 000000000d57a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5393 [inline]
 __schedule+0xd2b/0x5d00 kernel/sched/core.c:6746
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6925
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
 unwind_next_frame+0x1c90/0x23a0 arch/x86/kernel/unwind_orc.c:672
 __unwind_start arch/x86/kernel/unwind_orc.c:760 [inline]
 __unwind_start+0x57e/0x850 arch/x86/kernel/unwind_orc.c:685
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xb2/0x170 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object mm/kasan/common.c:240 [inline]
 __kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2106 [inline]
 slab_free mm/slub.c:4280 [inline]
 kmem_cache_free+0x12e/0x380 mm/slub.c:4344
 pmd_ptlock_free include/linux/mm.h:3034 [inline]
 pagetable_pmd_dtor include/linux/mm.h:3075 [inline]
 ___pmd_free_tlb+0x74/0x2f0 arch/x86/mm/pgtable.c:72
 __pmd_free_tlb arch/x86/include/asm/pgalloc.h:93 [inline]
 free_pmd_range mm/memory.c:226 [inline]
 free_pud_range mm/memory.c:244 [inline]
 free_p4d_range mm/memory.c:278 [inline]
 free_pgd_range+0x9ca/0xbc0 mm/memory.c:358
 free_pgtables+0x154/0x860 mm/memory.c:405
 exit_mmap+0x3d2/0xb90 mm/mmap.c:3278
 __mmput+0x12a/0x4d0 kernel/fork.c:1345
 mmput+0x62/0x70 kernel/fork.c:1367
 exit_mm kernel/exit.c:569 [inline]
 do_exit+0x999/0x2c10 kernel/exit.c:865
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
 __do_sys_exit_group kernel/exit.c:1038 [inline]
 __se_sys_exit_group kernel/exit.c:1036 [inline]
 __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x7a/0x120 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346
 entry_SYSENTER_compat_after_hwframe+0x7a/0x84
RIP: 0023:0xf72ca579
Code: Unable to access opcode bytes at 0xf72ca54f.
RSP: 002b:00000000ffc0829c EFLAGS: 00000282 ORIG_RAX: 00000000000000fc
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000ffffffff RSI: 00000000ffffff9c RDI: 00000000f7421ff4
RBP: 000000000000001e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>