On Thu, Aug 25, 2022 at 8:40 AM 韩天硕 <hantianshuo@xxxxxxxxx> wrote: > > Hello: > > My Syzkaller reported me the following issue on: > > > HEAD commit: 072e51356cd5a4a1c12c1020bc054c99b98333df Merge tag 'nfs-for-5.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs > > git tree: upstream > > kernel config: defconfig > > compiler: gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 > > > ------------[ cut here ]------------ > trying to isolate tail page > WARNING: CPU: 0 PID: 6175 at mm/folio-compat.c:158 isolate_lru_page+0x130/0x140 > Modules linked in: > CPU: 0 PID: 6175 Comm: syz-executor.0 Not tainted 5.18.12 #1 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 > RIP: 0010:isolate_lru_page+0x130/0x140 > Code: c3 89 c6 e8 22 4f f2 ff 85 db 75 0d e8 a9 4d f2 ff 44 89 e0 5b 5d 41 5c c3 e8 9c 4d f2 ff 48 c7 c7 a0 be 6a 93 e8 a9 f5 69 01 <0f> 0b eb de 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 54 55 48 89 fd > loop3: detected capacity change from 0 to 16383 > RSP: 0018:ffff88800844f8b8 EFLAGS: 00010282 > RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 > RDX: ffffc90000509000 RSI: ffff8880037997c0 RDI: ffffed1001089f09 > RBP: ffffea000010b040 R08: ffffffff8117b3f8 R09: 0000000000000000 > R10: 0000000000000005 R11: ffffed100d2c4ead R12: 00000000fffffff0 > R13: ffff88800185aff0 R14: ffffea000010b048 R15: 0000000021000000 > FS: 00007f8acbd46700(0000) GS:ffff888069600000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000001b2c821000 CR3: 0000000005028005 CR4: 0000000000770ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > nfs4: Unknown parameter 'vfat' > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > PKRU: 55555554 > Call Trace: > <TASK> > madvise_cold_or_pageout_pte_range+0x43b/0x8f0 > __walk_page_range+0xa48/0x1310 > walk_page_range+0x14b/0x280 > madvise_pageout+0x184/0x260 > madvise_vma_behavior+0x843/0x13f0 > do_madvise+0x310/0x5b0 > __x64_sys_madvise+0x5f/0x70 > do_syscall_64+0x38/0x90 > entry_SYSCALL_64_after_hwframe+0x44/0xae > RIP: 0033:0x7f8acc5d38bd > Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 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:00007f8acbd45bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000001c > RAX: ffffffffffffffda RBX: 00007f8acc6f2f60 RCX: 00007f8acc5d38bd > RDX: 0000000000000015 RSI: 0000000000004000 RDI: 0000000020ffc000 > RBP: 00007f8acc6400a9 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 00007ffec656fb0f R14: 00007ffec656fcb0 R15: 00007f8acbd45d80 > </TASK> The above is from 5.18. Another report from 5.10: https://lore.kernel.org/r/d927a335-a70b-48d3-9645-1d33cc88bd9c@xxxxxxxxxx/ We also hit it on 5.4, 5.10 and 5.15: trying to isolate tail page WARNING: CPU: 1 PID: 4608 at mm/vmscan.c:2096 isolate_lru_page+0xb4/0x527 mm/vmscan.c:2096 Modules linked in: CPU: 1 PID: 4608 Comm: syz-executor.1 Not tainted 5.15.11-syzkaller-01208-g0faa8c9f9dc4 #0 9358db1842dece7c55a7996e65dc0b63d57f833c Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:isolate_lru_page+0xb4/0x527 mm/vmscan.c:2096 Code: c7 a0 11 39 86 e8 91 75 8d 00 31 ff 89 c3 89 c6 e8 84 22 e2 ff 85 db 74 13 e8 62 21 e2 ff 48 c7 c7 60 74 d1 84 e8 d4 9a 1b 03 <0f> 0b e8 4f 21 e2 ff 48 89 ef e8 09 f7 fe ff 48 89 c2 48 89 c3 b8 RSP: 0018:ffffc90007cbf960 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffffc900081a1000 RSI: ffff88811d5dd400 RDI: fffff52000f97f1e RBP: ffffea000500c080 R08: ffffffff812600fc R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000005 R12: ffffc90007cbfc70 R13: dffffc0000000000 R14: ffffea000500c088 R15: ffffea000500c000 FS: 00007d1656db8700(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d422000 CR3: 0000000112d93000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> madvise_cold_or_pageout_pte_range+0x4c9/0x6c7 mm/madvise.c:462 walk_pmd_range mm/pagewalk.c:128 [inline] walk_pud_range mm/pagewalk.c:205 [inline] walk_p4d_range mm/pagewalk.c:240 [inline] walk_pgd_range mm/pagewalk.c:277 [inline] __walk_page_range+0xae0/0xe54 mm/pagewalk.c:379 walk_page_range+0x1eb/0x29e mm/pagewalk.c:475 madvise_pageout_page_range mm/madvise.c:528 [inline] madvise_pageout+0x21a/0x343 mm/madvise.c:565 madvise_vma mm/madvise.c:993 [inline] do_madvise+0xbac/0x16f4 mm/madvise.c:1202 Please take a look. Thanks.
