NILFS (loop2): nilfs_get_block (ino=16): a race condition while inserting a data block at offset=7
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WARNING: CPU: 1 PID: 6826 at fs/nilfs2/dat.c:158 nilfs_dat_prepare_end+0x2ac/0x2f4 fs/nilfs2/dat.c:158
Modules linked in:
CPU: 1 PID: 6826 Comm: syz-executor.2 Not tainted 6.1.76-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : nilfs_dat_prepare_end+0x2ac/0x2f4 fs/nilfs2/dat.c:158
lr : nilfs_dat_prepare_end+0x2ac/0x2f4 fs/nilfs2/dat.c:158
sp : ffff8000200c66b0
x29: ffff8000200c66c0 x28: 1fffe00022f3f5a7 x27: dfff800000000000
x26: 0000000000000000 x25: dfff800000000000 x24: ffff0001179fad00
x23: 1fffe00022f3f5a3 x22: 00000000fffffffe x21: ffff00011a3f0158
x20: ffff0001179fad18 x19: ffff0001179fad30 x18: ffff00011a3f0008
x17: ffff8000188c8000 x16: ffff80001214eb7c x15: 0000000000000002
x14: 00000000ffffffef x13: ffff00011b7a3780 x12: 0000000000040000
x11: 000000000003ffff x10: ffff800020a29000 x9 : ffff800009da96b0
x8 : 0000000000040000 x7 : ffff800008062348 x6 : ffff800008062558
x5 : ffff000123892698 x4 : ffff8000200c5f20 x3 : ffff800008b312e8
x2 : 0000000000000001 x1 : 00000000fffffffe x0 : 00000000fffffffe
Call trace:
 nilfs_dat_prepare_end+0x2ac/0x2f4 fs/nilfs2/dat.c:158
 nilfs_dat_prepare_update+0x30/0xf4 fs/nilfs2/dat.c:230
 nilfs_btree_prepare_update_v+0x190/0x378 fs/nilfs2/btree.c:1919
 nilfs_btree_prepare_propagate_v fs/nilfs2/btree.c:1987 [inline]
 nilfs_btree_propagate_v fs/nilfs2/btree.c:2040 [inline]
 nilfs_btree_propagate+0x668/0xe90 fs/nilfs2/btree.c:2097
 nilfs_bmap_propagate+0x7c/0x130 fs/nilfs2/bmap.c:345
 nilfs_collect_file_data+0x54/0xe8 fs/nilfs2/segment.c:587
 nilfs_segctor_apply_buffers+0x170/0x31c fs/nilfs2/segment.c:1047
 nilfs_segctor_scan_file_dsync fs/nilfs2/segment.c:1136 [inline]
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1290 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1532 [inline]
 nilfs_segctor_do_construct+0x1424/0x6550 fs/nilfs2/segment.c:2080
 nilfs_construct_dsync_segment+0x438/0x51c fs/nilfs2/segment.c:2345
 nilfs_writepages+0xfc/0x154 fs/nilfs2/inode.c:170
 do_writepages+0x2e8/0x56c mm/page-writeback.c:2469
 filemap_fdatawrite_wbc+0x124/0x174 mm/filemap.c:388
 __filemap_fdatawrite_range mm/filemap.c:421 [inline]
 filemap_write_and_wait_range+0x17c/0x268 mm/filemap.c:674
 __generic_file_write_iter+0x27c/0x388 mm/filemap.c:3931
 generic_file_write_iter+0xb8/0x2b4 mm/filemap.c:3977
 do_iter_write+0x534/0x964 fs/read_write.c:861
 vfs_iter_write+0x88/0xac fs/read_write.c:902
 iter_file_splice_write+0x62c/0xc5c fs/splice.c:685
 do_splice_from fs/splice.c:763 [inline]
 direct_splice_actor+0xe4/0x1c0 fs/splice.c:950
 splice_direct_to_actor+0x3c4/0x9b4 fs/splice.c:896
 do_splice_direct+0x20c/0x348 fs/splice.c:1002
 do_sendfile+0x4bc/0xc70 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __arm64_sys_sendfile64+0x160/0x3b4 fs/read_write.c:1309
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 9602
hardirqs last  enabled at (9601): [<ffff800008973678>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (9602): [<ffff80001214a704>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (9092): [<ffff800008020d7c>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (9092): [<ffff800008020d7c>] __do_softirq+0xc1c/0xe38 kernel/softirq.c:600
softirqs last disabled at (8849): [<ffff80000802a99c>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
---[ end trace 0000000000000000 ]---