BUG: unable to handle page fault for address: ffffc9000dd86d1d
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 1a400067 P4D 1a400067 PUD 1b2e9067 PMD 3e40b067 PTE 0
Oops: Oops: 0002 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6757 Comm: syz.0.261 Not tainted 6.16.0-rc1-syzkaller-g8c6bc74c7f89 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
Code: ff ff ff 4c 89 ff e8 b4 22 09 00 48 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 2e e8 0c bf 96 1e 84 c0 74 11 4c 89 ff e8 e4 23 09 <00> 83 bd 78 ff ff ff 00 75 cf 65 48 8b 05 a3 79 33 11 48 3b 45 d8
RSP: 0018:ffffc9000dd8f3a8 EFLAGS: 00010292
RAX: 00000000903caf01 RBX: ffffc9000dd8f460 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9820ee RDI: 00000000ffffffff
RBP: ffffc9000dd8f430 R08: ffffffff8fa10cf7 R09: 1ffffffff1f4219e
R10: dffffc0000000000 R11: fffffbfff1f4219f R12: ffff888035f22440
R13: ffff888045a49ac0 R14: ffffffff81acf690 R15: ffffc9000dd8f3a8
FS:  0000000000000000(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000dd86d1d CR3: 0000000056e76000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359
 kmalloc_noprof include/linux/slab.h:905 [inline]
 slab_free_hook mm/slub.c:2333 [inline]
 slab_free mm/slub.c:4643 [inline]
 kmem_cache_free+0x166/0x400 mm/slub.c:4745
 exit_mmap+0x53f/0xb50 mm/mmap.c:1309
 __mmput+0x118/0x420 kernel/fork.c:1121
 exit_mm+0x1da/0x2c0 kernel/exit.c:581
 do_exit+0x640/0x22e0 kernel/exit.c:943
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1104
 get_signal+0x1286/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f55f8f8cda9
Code: Unable to access opcode bytes at 0x7f55f8f8cd7f.
RSP: 002b:00007f55f9e7e0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f55f91a5fa8 RCX: 00007f55f8f8cda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f55f91a5fa8
RBP: 00007f55f91a5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f55f91a5fac
R13: 0000000000000000 R14: 00007ffd7e9d5f60 R15: 00007ffd7e9d6048
 </TASK>
Modules linked in:
CR2: ffffc9000dd86d1d
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
Code: ff ff ff 4c 89 ff e8 b4 22 09 00 48 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 2e e8 0c bf 96 1e 84 c0 74 11 4c 89 ff e8 e4 23 09 <00> 83 bd 78 ff ff ff 00 75 cf 65 48 8b 05 a3 79 33 11 48 3b 45 d8
RSP: 0018:ffffc9000dd8f3a8 EFLAGS: 00010292
RAX: 00000000903caf01 RBX: ffffc9000dd8f460 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9820ee RDI: 00000000ffffffff
RBP: ffffc9000dd8f430 R08: ffffffff8fa10cf7 R09: 1ffffffff1f4219e
R10: dffffc0000000000 R11: fffffbfff1f4219f R12: ffff888035f22440
R13: ffff888045a49ac0 R14: ffffffff81acf690 R15: ffffc9000dd8f3a8
FS:  0000000000000000(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000dd86d1d CR3: 0000000056e76000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400