On Wed, Nov 10, 2021 at 09:20:38AM +0800, Hao Sun wrote: > Hello, > > When using Healer to fuzz the latest Linux kernel, the following crash > was triggered. It's still a bug in nilfs, just like the last time this was reported. > HEAD commit: 6b75d88fa81b Merge branch 'i2c/for-current' > git tree: upstream > console output: https://paste.ubuntu.com/p/C22bhzvZP6/ > kernel config: https://paste.ubuntu.com/p/b62Hp7BfJn/ > C reproducer: https://paste.ubuntu.com/p/2mchRNDJr4/ > Syzlang reproducer: https://paste.ubuntu.com/p/xM3DQ2f5Qz/ > > If you fix this issue, please add the following tag to the commit: > Reported-by: Hao Sun <sunhao.th@xxxxxxxxx> > > NILFS (loop10): segctord starting. Construction interval = 5 seconds, > CP frequency < 30 seconds > ------------[ cut here ]------------ > WARNING: CPU: 3 PID: 18327 at include/linux/backing-dev.h:269 > inode_to_wb include/linux/backing-dev.h:269 [inline] > WARNING: CPU: 3 PID: 18327 at include/linux/backing-dev.h:269 > folio_account_dirtied mm/page-writeback.c:2460 [inline] > WARNING: CPU: 3 PID: 18327 at include/linux/backing-dev.h:269 > __folio_mark_dirty+0xab2/0xe80 mm/page-writeback.c:2509 > Modules linked in: > CPU: 3 PID: 18327 Comm: segctord Not tainted 5.15.0+ #6 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > 1.13.0-1ubuntu1.1 04/01/2014 > RIP: 0010:inode_to_wb include/linux/backing-dev.h:269 [inline] > RIP: 0010:folio_account_dirtied mm/page-writeback.c:2460 [inline] > RIP: 0010:__folio_mark_dirty+0xab2/0xe80 mm/page-writeback.c:2509 > Code: ff ff ff 48 8d 78 70 e8 8c 69 96 07 31 ff 89 c6 89 44 24 10 e8 > ff 52 d8 ff 8b 44 24 10 85 c0 0f 85 13 fa ff ff e8 8e 51 d8 ff <0f> 0b > e9 07 fa ff ff e8 82 51 d8 ff e8 9d 6a 96 07 31 ff 41 89 c7 > RSP: 0018:ffffc900076ef7c0 EFLAGS: 00010046 > RAX: 0000000000000000 RBX: ffff88802c478378 RCX: ffff88802fc33980 > RDX: 0000000000000000 RSI: ffff88802fc33980 RDI: 0000000000000002 > RBP: ffffea0000b7ca80 R08: ffffffff819f0012 R09: 0000000000000000 > R10: 0000000000000005 R11: fffff9400016f950 R12: 0000000000000246 > R13: ffff88802c478138 R14: 0000000000000001 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff888135d00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000056054d573c18 CR3: 0000000021c4e000 CR4: 0000000000350ee0 > Call Trace: > <TASK> > __set_page_dirty include/linux/pagemap.h:784 [inline] > mark_buffer_dirty+0x501/0x6a0 fs/buffer.c:1108 > nilfs_btree_propagate_p fs/nilfs2/btree.c:1889 [inline] > nilfs_btree_propagate+0x4ba/0xce0 fs/nilfs2/btree.c:2085 > nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337 > nilfs_collect_dat_data+0x45/0xd0 fs/nilfs2/segment.c:625 > nilfs_segctor_apply_buffers+0x149/0x480 fs/nilfs2/segment.c:1009 > nilfs_segctor_scan_file+0x3d9/0x570 fs/nilfs2/segment.c:1058 > nilfs_segctor_collect_blocks+0xa33/0x2fb0 fs/nilfs2/segment.c:1224 > nilfs_segctor_collect fs/nilfs2/segment.c:1494 [inline] > nilfs_segctor_do_construct+0x1228/0x5ef0 fs/nilfs2/segment.c:2036 > nilfs_segctor_construct+0x79f/0xb10 fs/nilfs2/segment.c:2372 > nilfs_segctor_thread_construct fs/nilfs2/segment.c:2480 [inline] > nilfs_segctor_thread+0x3be/0xe40 fs/nilfs2/segment.c:2563 > kthread+0x405/0x4f0 kernel/kthread.c:327 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 > </TASK> >
