NILFS (loop5): trying rollback from an earlier position NILFS (loop4): recovery complete NILFS (loop5): recovery complete NILFS (loop4): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds WARNING: CPU: 1 PID: 14702 at include/linux/backing-dev.h:340 inode_to_wb include/linux/backing-dev.h:340 [inline] WARNING: CPU: 1 PID: 14702 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 mm/page-writeback.c:2420 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 14702 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 WARNING: CPU: 0 PID: 14731 at include/linux/backing-dev.h:340 inode_to_wb include/linux/backing-dev.h:340 [inline] WARNING: CPU: 0 PID: 14731 at include/linux/backing-dev.h:340 __test_set_page_writeback+0x1366/0x1750 mm/page-writeback.c:2783 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 Modules linked in: panic+0x26a/0x50e kernel/panic.c:186 CPU: 0 PID: 14731 Comm: segctord Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:inode_to_wb include/linux/backing-dev.h:340 [inline] RIP: 0010:__test_set_page_writeback+0x1366/0x1750 mm/page-writeback.c:2783 Code: ff ff ff 48 8d 78 70 e8 98 8c ca ff 31 ff 89 c6 89 44 24 18 e8 9b 5e e2 ff 8b 44 24 18 85 c0 0f 85 47 fb ff ff e8 1a 5d e2 ff <0f> 0b e9 3b fb ff ff e8 0e 5d e2 ff 4c 8b 74 24 08 49 83 ee 01 e9 RSP: 0018:ffff88805327fa88 EFLAGS: 00010093 RAX: ffff8880b3416580 RBX: ffff8880b1ae18f0 RCX: ffffffff81802845 __warn.cold+0x20/0x5a kernel/panic.c:541 RDX: 0000000000000000 RSI: ffffffff81802856 RDI: 0000000000000005 RBP: ffffea0002a95ac0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880b1ae1a80 R15: ffff8880b1ae18f8 report_bug+0x262/0x2b0 lib/bug.c:183 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a82cea1098 CR3: 00000000aa294000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: set_page_writeback include/linux/page-flags.h:497 [inline] nilfs_begin_page_io+0x18a/0x250 fs/nilfs2/segment.c:1639 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 nilfs_segctor_prepare_write fs/nilfs2/segment.c:1689 [inline] nilfs_segctor_do_construct+0x484f/0x8360 fs/nilfs2/segment.c:2065 RIP: 0010:inode_to_wb include/linux/backing-dev.h:340 [inline] RIP: 0010:account_page_dirtied+0x8cc/0xbb0 mm/page-writeback.c:2420 Code: 88 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ec e1 ca ff 31 ff 89 c3 89 c6 e8 f1 b3 e2 ff 85 db 0f 85 39 f9 ff ff e8 74 b2 e2 ff <0f> 0b e9 2d f9 ff ff e8 68 b2 e2 ff 4c 89 e6 4c 89 ef e8 9d b3 2d RSP: 0018:ffff8880572debd0 EFLAGS: 00010012 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90008c44000 RDX: 0000000000002ea3 RSI: ffffffff817fd2fc RDI: 0000000000000005 RBP: ffff8880a1c17b48 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffea0002607380 R13: ffff8880a1c179c0 R14: ffff8880a1c17838 R15: ffffea0002607388 nilfs_segctor_construct+0x764/0xae0 fs/nilfs2/segment.c:2372 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2480 [inline] nilfs_segctor_thread+0x3cb/0xf50 fs/nilfs2/segment.c:2563 __set_page_dirty+0x7f/0x3e0 fs/buffer.c:582 mark_buffer_dirty+0x424/0x5c0 fs/buffer.c:1111 nilfs_btree_commit_convert_and_insert fs/nilfs2/btree.c:1812 [inline] nilfs_btree_convert_and_insert+0xed5/0x1250 fs/nilfs2/btree.c:1877 nilfs_bmap_do_insert fs/nilfs2/bmap.c:111 [inline] nilfs_bmap_insert+0x2a1/0x3f0 fs/nilfs2/bmap.c:147 kthread+0x33f/0x460 kernel/kthread.c:259 nilfs_mdt_insert_new_block fs/nilfs2/mdt.c:44 [inline] nilfs_mdt_create_block fs/nilfs2/mdt.c:93 [inline] nilfs_mdt_get_block+0x59a/0xd40 fs/nilfs2/mdt.c:254 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 irq event stamp: 314 hardirqs last enabled at (313): [] mod_lruvec_page_state include/linux/memcontrol.h:713 [inline] hardirqs last enabled at (313): [] dec_lruvec_page_state include/linux/memcontrol.h:1215 [inline] hardirqs last enabled at (313): [] clear_page_dirty_for_io+0xb3b/0xee0 mm/page-writeback.c:2699 hardirqs last disabled at (314): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (314): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152 softirqs last enabled at (124): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 nilfs_palloc_get_block+0xc4/0x2b0 fs/nilfs2/alloc.c:216 softirqs last disabled at (25): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (25): [] irq_exit+0x215/0x260 kernel/softirq.c:412 nilfs_palloc_get_entry_block+0x17b/0x230 fs/nilfs2/alloc.c:318 ---[ end trace 8047f232f4fd5d25 ]--- nilfs_dat_prepare_entry fs/nilfs2/dat.c:43 [inline] nilfs_dat_prepare_alloc fs/nilfs2/dat.c:69 [inline] nilfs_dat_prepare_alloc+0x61/0xb0 fs/nilfs2/dat.c:61 nilfs_bmap_prepare_alloc_ptr fs/nilfs2/bmap.h:183 [inline] nilfs_direct_insert+0x3cb/0x4e0 fs/nilfs2/direct.c:122 nilfs_bmap_do_insert fs/nilfs2/bmap.c:121 [inline] nilfs_bmap_insert+0x27a/0x3f0 fs/nilfs2/bmap.c:147 nilfs_get_block+0x4d5/0x970 fs/nilfs2/inode.c:96 WARNING: CPU: 0 PID: 14731 at include/linux/backing-dev.h:340 inode_to_wb include/linux/backing-dev.h:340 [inline] WARNING: CPU: 0 PID: 14731 at include/linux/backing-dev.h:340 test_clear_page_writeback+0xeab/0x1300 mm/page-writeback.c:2731 Modules linked in: CPU: 0 PID: 14731 Comm: segctord Tainted: G W 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 __block_write_begin_int+0x46c/0x17b0 fs/buffer.c:1978 RIP: 0010:inode_to_wb include/linux/backing-dev.h:340 [inline] RIP: 0010:test_clear_page_writeback+0xeab/0x1300 mm/page-writeback.c:2731 Code: 78 70 48 89 44 24 18 e8 e3 fc c9 ff 31 ff 89 c6 89 44 24 18 e8 e6 ce e1 ff 8b 44 24 18 85 c0 0f 85 f4 f6 ff ff e8 65 cd e1 ff <0f> 0b e9 e8 f6 ff ff e8 59 cd e1 ff 49 8d 6c 24 ff e9 0e fe ff ff RSP: 0018:ffff88805327fa58 EFLAGS: 00010093 RAX: ffff8880b3416580 RBX: ffff8880b1ae18f0 RCX: ffffffff8180b7fa RDX: 0000000000000000 RSI: ffffffff8180b80b RDI: 0000000000000005 __block_write_begin fs/buffer.c:2028 [inline] block_write_begin+0x58/0x2e0 fs/buffer.c:2087 RBP: ffffea0002a95ac0 R08: 0000000000000001 R09: 0000000000000000 nilfs_write_begin+0xa5/0x1b0 fs/nilfs2/inode.c:267 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88813be824c0 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170 R13: ffff8880b59f68c0 R14: 0000000000000001 R15: ffff8880b1ae18f8 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f487c67a020 CR3: 00000000a22de000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323 Call Trace: call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 end_page_writeback+0x1b3/0x410 mm/filemap.c:1252 nilfs_end_page_io+0x415/0x800 fs/nilfs2/segment.c:1737 nilfs_segctor_complete_write fs/nilfs2/segment.c:1887 [inline] nilfs_segctor_wait fs/nilfs2/segment.c:1920 [inline] nilfs_segctor_do_construct+0x321f/0x8360 fs/nilfs2/segment.c:2083 __kernel_write+0x109/0x370 fs/read_write.c:506 write_pipe_buf+0x153/0x1f0 fs/splice.c:798 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x389/0x800 fs/splice.c:627 nilfs_segctor_construct+0x764/0xae0 fs/nilfs2/segment.c:2372 splice_from_pipe fs/splice.c:662 [inline] default_file_splice_write+0xd8/0x180 fs/splice.c:810 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2480 [inline] nilfs_segctor_thread+0x3cb/0xf50 fs/nilfs2/segment.c:2563 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x115/0x160 fs/splice.c:1025 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 kthread+0x33f/0x460 kernel/kthread.c:259 do_sendfile+0x550/0xc30 fs/read_write.c:1447 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 irq event stamp: 442 hardirqs last enabled at (441): [] mod_lruvec_state include/linux/memcontrol.h:687 [inline] hardirqs last enabled at (441): [] dec_lruvec_state include/linux/memcontrol.h:1203 [inline] hardirqs last enabled at (441): [] test_clear_page_writeback+0xcef/0x1300 mm/page-writeback.c:2753 hardirqs last disabled at (442): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (442): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:152 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 softirqs last enabled at (366): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (317): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (317): [] irq_exit+0x215/0x260 kernel/softirq.c:412 ---[ end trace 8047f232f4fd5d26 ]--- do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe691aad0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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:00007fe69001f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fe691bccf80 RCX: 00007fe691aad0f9 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004 RBP: 00007fe691b08ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccd10ac3f R14: 00007fe69001f300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..