==================================================================
BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping

write to 0xffffea00047eba98 of 8 bytes by task 13054 on cpu 0:
 page_cache_delete_batch mm/filemap.c:308 [inline]
 delete_from_page_cache_batch+0x31b/0x770 mm/filemap.c:334
 truncate_inode_pages_range+0x305/0x870 mm/truncate.c:370
 truncate_inode_pages mm/truncate.c:452 [inline]
 truncate_inode_pages_final+0x54/0x60 mm/truncate.c:487
 ext4_evict_inode+0x27c/0xe90 fs/ext4/inode.c:221
 evict+0x1aa/0x410 fs/inode.c:664
 iput_final fs/inode.c:1747 [inline]
 iput+0x3f9/0x580 fs/inode.c:1773
 dentry_unlink_inode+0x22a/0x240 fs/dcache.c:401
 __dentry_kill+0x28b/0x450 fs/dcache.c:607
 dentry_kill+0x8d/0x1e0
 dput+0x11e/0x1f0 fs/dcache.c:913
 __fput+0x3bf/0x570 fs/file_table.c:328
 ____fput+0x11/0x20 fs/file_table.c:348
 task_work_run+0xde/0x110 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x5ad/0x1740 kernel/exit.c:820
 do_group_exit+0xfe/0x140 kernel/exit.c:950
 get_signal+0xb40/0xc60 kernel/signal.c:2858
 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x69/0x90 kernel/entry/common.c:203
 irqentry_exit_to_user_mode+0x5/0x10 kernel/entry/common.c:309
 irqentry_exit+0xe/0x40 kernel/entry/common.c:412
 exc_general_protection+0x321/0x4b0 arch/x86/kernel/traps.c:721
 asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:564

read to 0xffffea00047eba98 of 8 bytes by task 13076 on cpu 1:
 folio_mapping+0x8e/0x110 mm/util.c:778
 folio_evictable mm/internal.h:138 [inline]
 move_folios_to_lru+0x12d/0x6d0 mm/vmscan.c:2376
 shrink_inactive_list+0x44a/0x740 mm/vmscan.c:2492
 shrink_list mm/vmscan.c:2716 [inline]
 shrink_lruvec+0x3aa/0x700 mm/vmscan.c:5885
 shrink_node_memcgs+0x253/0x470 mm/vmscan.c:6074
 shrink_node+0x1d7/0x930 mm/vmscan.c:6105
 shrink_zones+0x2c1/0x5d0 mm/vmscan.c:6343
 do_try_to_free_pages+0x195/0x760 mm/vmscan.c:6405
 try_to_free_mem_cgroup_pages+0x1d1/0x420 mm/vmscan.c:6720
 memory_max_write+0x15f/0x290 mm/memcontrol.c:6448
 cgroup_file_write+0x167/0x300 kernel/cgroup/cgroup.c:4057
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:330
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x468/0x760 fs/read_write.c:584
 ksys_write+0xe8/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff888106382770 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13076 Comm: syz-executor.4 Not tainted 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
==================================================================
syz-executor.4 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000
CPU: 0 PID: 13076 Comm: syz-executor.4 Not tainted 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd6/0x122 lib/dump_stack.c:106
 dump_stack+0x11/0x15 lib/dump_stack.c:113
 dump_header+0x98/0x430 mm/oom_kill.c:460
 oom_kill_process+0x100/0x540 mm/oom_kill.c:1036
 out_of_memory+0x620/0x880 mm/oom_kill.c:1174
 mem_cgroup_out_of_memory+0x13a/0x180 mm/memcontrol.c:1706
 memory_max_write+0x1fa/0x290 mm/memcontrol.c:6455
 cgroup_file_write+0x167/0x300 kernel/cgroup/cgroup.c:4057
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:330
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x468/0x760 fs/read_write.c:584
 ksys_write+0xe8/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcf7de6c639
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcf7d1e0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fcf7df8cf80 RCX: 00007fcf7de6c639
RDX: 0000000000000012 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007fcf7dec77e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff526c5b4f R14: 00007fcf7d1e0300 R15: 0000000000022000
 </TASK>
memory: usage 8848kB, limit 0kB, failcnt 0
swap: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz4:
anon 151552
file 8368128
kernel 475136
kernel_stack 32768
pagetables 73728
sec_pagetables 0
percpu 4736
sock 0
vmalloc 0
shmem 8368128
file_mapped 155648
file_dirty 0
file_writeback 0
swapcached 0
inactive_anon 151552
active_anon 8368128
inactive_file 0
active_file 0
unevictable 0
slab_reclaimable 52328
slab_unreclaimable 285232
slab 337560
workingset_refault_anon 0
workingset_refault_file 30
workingset_activate_anon 0
oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz4,mems_allowed=0,oom_memcg=/syz4,task_memcg=/syz4,task=syz-executor.4,pid=7595,uid=0
Memory cgroup out of memory: Killed process 7595 (syz-executor.4) total-vm:42364kB, anon-rss:468kB, file-rss:9048kB, shmem-rss:64kB, UID:0 pgtables:68kB oom_score_adj:0
syz-executor.4 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000
CPU: 0 PID: 13076 Comm: syz-executor.4 Not tainted 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd6/0x122 lib/dump_stack.c:106
 dump_stack+0x11/0x15 lib/dump_stack.c:113
 dump_header+0x98/0x430 mm/oom_kill.c:460
 oom_kill_process+0x100/0x540 mm/oom_kill.c:1036
 out_of_memory+0x620/0x880 mm/oom_kill.c:1174
 mem_cgroup_out_of_memory+0x13a/0x180 mm/memcontrol.c:1706
 memory_max_write+0x1fa/0x290 mm/memcontrol.c:6455
 cgroup_file_write+0x167/0x300 kernel/cgroup/cgroup.c:4057
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:330
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x468/0x760 fs/read_write.c:584
 ksys_write+0xe8/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcf7de6c639
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcf7d1e0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fcf7df8cf80 RCX: 00007fcf7de6c639
RDX: 0000000000000012 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007fcf7dec77e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff526c5b4f R14: 00007fcf7d1e0300 R15: 0000000000022000
 </TASK>
memory: usage 8708kB, limit 0kB, failcnt 0
swap: usage 0kB, limit 9007199254740988kB, failcnt 0
Memory cgroup stats for /syz4:
anon 139264
file 8368128
kernel 405504
kernel_stack 16384
pagetables 65536
sec_pagetables 0
percpu 3552
sock 0
vmalloc 0
shmem 8368128
file_mapped 155648
file_dirty 0
file_writeback 0
swapcached 0
inactive_anon 139264
active_anon 8368128
inactive_file 0
active_file 0
unevictable 0
slab_reclaimable 40224
slab_unreclaimable 256064
slab 296288
workingset_refault_anon 0
workingset_refault_file 30
workingset_activate_anon 0
oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz4,mems_allowed=0,oom_memcg=/syz4,task_memcg=/syz4,task=syz-executor.4,pid=13072,uid=0
Memory cgroup out of memory: Killed process 13076 (syz-executor.4) total-vm:46336kB, anon-rss:508kB, file-rss:9008kB, shmem-rss:76kB, UID:0 pgtables:76kB oom_score_adj:1000