* [syzbot ci] Re: ext4: test if inode's all dirty pages are submitted to disk [not found] <20260226110718.1904825-1-yebin@huaweicloud.com> @ 2026-02-27 7:52 ` syzbot ci 2026-02-28 1:14 ` yebin (H) 0 siblings, 1 reply; 4+ messages in thread From: syzbot ci @ 2026-02-27 7:52 UTC (permalink / raw) To: adilger.kernel, jack, linux-ext4, tytso, yebin; +Cc: syzbot, syzkaller-bugs syzbot ci has tested the following series [v1] ext4: test if inode's all dirty pages are submitted to disk https://lore.kernel.org/all/20260226110718.1904825-1-yebin@huaweicloud.com * [PATCH] ext4: test if inode's all dirty pages are submitted to disk and found the following issue: WARNING in ext4_evict_inode Full report is available here: https://ci.syzbot.org/series/8f9434e5-a73c-4b31-be9f-e9b76f1c2596 *** WARNING in ext4_evict_inode tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux base: f4d0ec0aa20d49f09dc01d82894ce80d72de0560 arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/7053c6f2-2ee6-4a1d-9f74-d2f56facd9f9/config C repro: https://ci.syzbot.org/findings/4f7c2b91-8121-443d-9a4f-991feda8057c/c_repro syz repro: https://ci.syzbot.org/findings/4f7c2b91-8121-443d-9a4f-991feda8057c/syz_repro ------------[ cut here ]------------ mapping_tagged(&inode->i_data, PAGECACHE_TAG_DIRTY) WARNING: fs/ext4/inode.c:191 at ext4_evict_inode+0xbdc/0xf10 fs/ext4/inode.c:191, CPU#1: syz-executor/5915 Modules linked in: CPU: 1 UID: 0 PID: 5915 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:ext4_evict_inode+0xbdc/0xf10 fs/ext4/inode.c:191 Code: ba 2c 02 00 48 8b bc 24 a0 00 00 00 e8 bd 49 14 00 e9 71 fe ff ff e8 43 63 40 ff 90 0f 0b 90 e9 e6 f4 ff ff e8 35 63 40 ff 90 <0f> 0b 90 e9 f2 f5 ff ff e8 27 63 40 ff 48 8d 3d 50 df 92 0d 67 48 RSP: 0018:ffffc900048b79a0 EFLAGS: 00010293 RAX: ffffffff8285287b RBX: ffff88811d980298 RCX: ffff8881027d8000 RDX: 0000000000000000 RSI: 0000000004000000 RDI: 0000000000000000 RBP: ffffc900048b7ab0 R08: ffffffff901181b7 R09: 1ffffffff2023036 R10: dffffc0000000000 R11: fffffbfff2023037 R12: 1ffff92000916f44 R13: dffffc0000000000 R14: ffff88811d9804b8 R15: 0000000004000000 FS: 000055557d541500(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00003e720 CR3: 000000010f9d2000 CR4: 00000000000006f0 Call Trace: <TASK> evict+0x61e/0xb10 fs/inode.c:846 dispose_list fs/inode.c:888 [inline] evict_inodes+0x75a/0x7f0 fs/inode.c:942 generic_shutdown_super+0xaa/0x2d0 fs/super.c:632 kill_block_super+0x44/0x90 fs/super.c:1725 ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7459 deactivate_locked_super+0xbc/0x130 fs/super.c:476 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcf3c79d897 Code: a2 c7 05 5c ee 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffe2362cef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fcf3c831ef0 RCX: 00007fcf3c79d897 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe2362cfb0 RBP: 00007ffe2362cfb0 R08: 00007ffe2362dfb0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe2362e040 R13: 00007fcf3c831ef0 R14: 000000000000f11c R15: 00007ffe2362e080 </TASK> *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot ci] Re: ext4: test if inode's all dirty pages are submitted to disk 2026-02-27 7:52 ` [syzbot ci] Re: ext4: test if inode's all dirty pages are submitted to disk syzbot ci @ 2026-02-28 1:14 ` yebin (H) 0 siblings, 0 replies; 4+ messages in thread From: yebin (H) @ 2026-02-28 1:14 UTC (permalink / raw) To: syzbot ci, adilger.kernel, jack, linux-ext4, tytso, yebin Cc: syzbot, syzkaller-bugs This is my oversight. If the file system has already become read-only and dirty pages cannot be flushed back, no warning should be generated at this time. On 2026/2/27 15:52, syzbot ci wrote: > syzbot ci has tested the following series > > [v1] ext4: test if inode's all dirty pages are submitted to disk > https://lore.kernel.org/all/20260226110718.1904825-1-yebin@huaweicloud.com > * [PATCH] ext4: test if inode's all dirty pages are submitted to disk > > and found the following issue: > WARNING in ext4_evict_inode > > Full report is available here: > https://ci.syzbot.org/series/8f9434e5-a73c-4b31-be9f-e9b76f1c2596 > > *** > > WARNING in ext4_evict_inode > > tree: torvalds > URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux > base: f4d0ec0aa20d49f09dc01d82894ce80d72de0560 > arch: amd64 > compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 > config: https://ci.syzbot.org/builds/7053c6f2-2ee6-4a1d-9f74-d2f56facd9f9/config > C repro: https://ci.syzbot.org/findings/4f7c2b91-8121-443d-9a4f-991feda8057c/c_repro > syz repro: https://ci.syzbot.org/findings/4f7c2b91-8121-443d-9a4f-991feda8057c/syz_repro > > ------------[ cut here ]------------ > mapping_tagged(&inode->i_data, PAGECACHE_TAG_DIRTY) > WARNING: fs/ext4/inode.c:191 at ext4_evict_inode+0xbdc/0xf10 fs/ext4/inode.c:191, CPU#1: syz-executor/5915 > Modules linked in: > CPU: 1 UID: 0 PID: 5915 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 > RIP: 0010:ext4_evict_inode+0xbdc/0xf10 fs/ext4/inode.c:191 > Code: ba 2c 02 00 48 8b bc 24 a0 00 00 00 e8 bd 49 14 00 e9 71 fe ff ff e8 43 63 40 ff 90 0f 0b 90 e9 e6 f4 ff ff e8 35 63 40 ff 90 <0f> 0b 90 e9 f2 f5 ff ff e8 27 63 40 ff 48 8d 3d 50 df 92 0d 67 48 > RSP: 0018:ffffc900048b79a0 EFLAGS: 00010293 > RAX: ffffffff8285287b RBX: ffff88811d980298 RCX: ffff8881027d8000 > RDX: 0000000000000000 RSI: 0000000004000000 RDI: 0000000000000000 > RBP: ffffc900048b7ab0 R08: ffffffff901181b7 R09: 1ffffffff2023036 > R10: dffffc0000000000 R11: fffffbfff2023037 R12: 1ffff92000916f44 > R13: dffffc0000000000 R14: ffff88811d9804b8 R15: 0000000004000000 > FS: 000055557d541500(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 000000c00003e720 CR3: 000000010f9d2000 CR4: 00000000000006f0 > Call Trace: > <TASK> > evict+0x61e/0xb10 fs/inode.c:846 > dispose_list fs/inode.c:888 [inline] > evict_inodes+0x75a/0x7f0 fs/inode.c:942 > generic_shutdown_super+0xaa/0x2d0 fs/super.c:632 > kill_block_super+0x44/0x90 fs/super.c:1725 > ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7459 > deactivate_locked_super+0xbc/0x130 fs/super.c:476 > cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 > task_work_run+0x1d9/0x270 kernel/task_work.c:233 > resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] > __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] > exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 > __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] > syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] > syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] > do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7fcf3c79d897 > Code: a2 c7 05 5c ee 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 > RSP: 002b:00007ffe2362cef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 > RAX: 0000000000000000 RBX: 00007fcf3c831ef0 RCX: 00007fcf3c79d897 > RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe2362cfb0 > RBP: 00007ffe2362cfb0 R08: 00007ffe2362dfb0 R09: 00000000ffffffff > R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe2362e040 > R13: 00007fcf3c831ef0 R14: 000000000000f11c R15: 00007ffe2362e080 > </TASK> > > > *** > > If these findings have caused you to resend the series or submit a > separate fix, please add the following tag to your commit message: > Tested-by: syzbot@syzkaller.appspotmail.com > > --- > This report is generated by a bot. It may contain errors. > syzbot ci engineers can be reached at syzkaller@googlegroups.com. > > > . > ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <20260228025650.2664098-1-yebin@huaweicloud.com>]
* [syzbot ci] Re: ext4: test if inode's all dirty pages are submitted to disk [not found] <20260228025650.2664098-1-yebin@huaweicloud.com> @ 2026-03-02 10:08 ` syzbot ci 2026-03-02 14:08 ` yebin (H) 0 siblings, 1 reply; 4+ messages in thread From: syzbot ci @ 2026-03-02 10:08 UTC (permalink / raw) To: adilger.kernel, jack, linux-ext4, tytso, yebin; +Cc: syzbot, syzkaller-bugs syzbot ci has tested the following series [v2] ext4: test if inode's all dirty pages are submitted to disk https://lore.kernel.org/all/20260228025650.2664098-1-yebin@huaweicloud.com * [PATCH v2] ext4: test if inode's all dirty pages are submitted to disk and found the following issue: WARNING in ext4_evict_inode Full report is available here: https://ci.syzbot.org/series/b58ccb85-a946-44ae-9d57-c02bee2a43ba *** WARNING in ext4_evict_inode tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux base: 4d349ee5c7782f8b27f6cb550f112c5e26fff38d arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/1accd9c8-371e-4c6c-9c4b-b930c65c23be/config C repro: https://ci.syzbot.org/findings/ccbdbde1-d214-4e90-aeb7-d4bbda01329c/c_repro syz repro: https://ci.syzbot.org/findings/ccbdbde1-d214-4e90-aeb7-d4bbda01329c/syz_repro ------------[ cut here ]------------ !ext4_emergency_state(inode->i_sb) && mapping_tagged(&inode->i_data, PAGECACHE_TAG_DIRTY) WARNING: fs/ext4/inode.c:192 at ext4_evict_inode+0xce7/0x1020 fs/ext4/inode.c:191, CPU#1: syz-executor/5917 Modules linked in: CPU: 1 UID: 0 PID: 5917 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:ext4_evict_inode+0xce7/0x1020 fs/ext4/inode.c:191 Code: f3 ff ff e8 ab 60 40 ff 49 89 dc 48 8b 5c 24 18 e9 ea f5 ff ff e8 99 60 40 ff 48 8b 5c 24 18 e9 db f5 ff ff e8 8a 60 40 ff 90 <0f> 0b 90 e9 cd f5 ff ff e8 7c 60 40 ff 48 8d 3d 85 e4 92 0d 67 48 RSP: 0018:ffffc900057e79a0 EFLAGS: 00010293 RAX: ffffffff82852b46 RBX: ffff88812000f5b8 RCX: ffff88811128ba00 RDX: 0000000000000000 RSI: 0000000004000000 RDI: 0000000000000000 RBP: ffffc900057e7ab0 R08: ffff8881111b6387 R09: 1ffff11022236c70 R10: dffffc0000000000 R11: ffffed1022236c71 R12: 1ffff92000afcf44 R13: dffffc0000000000 R14: 0000000004000000 R15: ffff8881111b6380 FS: 0000555570b0d500(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff533fce88 CR3: 000000010b644000 CR4: 00000000000006f0 Call Trace: <TASK> evict+0x61e/0xb10 fs/inode.c:846 dispose_list fs/inode.c:888 [inline] evict_inodes+0x75a/0x7f0 fs/inode.c:942 generic_shutdown_super+0xaa/0x2d0 fs/super.c:632 kill_block_super+0x44/0x90 fs/super.c:1725 ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7459 deactivate_locked_super+0xbc/0x130 fs/super.c:476 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb75539d9d7 Code: a2 c7 05 1c ed 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffe2e6b7108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fb755431f90 RCX: 00007fb75539d9d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe2e6b71c0 RBP: 00007ffe2e6b71c0 R08: 00007ffe2e6b81c0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe2e6b8250 R13: 00007fb755431f90 R14: 000000000000f951 R15: 00007ffe2e6b8290 </TASK> *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot ci] Re: ext4: test if inode's all dirty pages are submitted to disk 2026-03-02 10:08 ` syzbot ci @ 2026-03-02 14:08 ` yebin (H) 0 siblings, 0 replies; 4+ messages in thread From: yebin (H) @ 2026-03-02 14:08 UTC (permalink / raw) To: syzbot ci, adilger.kernel, jack, linux-ext4, tytso, yebin Cc: syzbot, syzkaller-bugs On 2026/3/2 18:08, syzbot ci wrote: > syzbot ci has tested the following series > > [v2] ext4: test if inode's all dirty pages are submitted to disk > https://lore.kernel.org/all/20260228025650.2664098-1-yebin@huaweicloud.com > * [PATCH v2] ext4: test if inode's all dirty pages are submitted to disk > > and found the following issue: > WARNING in ext4_evict_inode > > Full report is available here: > https://ci.syzbot.org/series/b58ccb85-a946-44ae-9d57-c02bee2a43ba > > *** > > WARNING in ext4_evict_inode > > tree: torvalds > URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux > base: 4d349ee5c7782f8b27f6cb550f112c5e26fff38d > arch: amd64 > compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 > config: https://ci.syzbot.org/builds/1accd9c8-371e-4c6c-9c4b-b930c65c23be/config > C repro: https://ci.syzbot.org/findings/ccbdbde1-d214-4e90-aeb7-d4bbda01329c/c_repro > syz repro: https://ci.syzbot.org/findings/ccbdbde1-d214-4e90-aeb7-d4bbda01329c/syz_repro > > ------------[ cut here ]------------ > !ext4_emergency_state(inode->i_sb) && mapping_tagged(&inode->i_data, PAGECACHE_TAG_DIRTY) > WARNING: fs/ext4/inode.c:192 at ext4_evict_inode+0xce7/0x1020 fs/ext4/inode.c:191, CPU#1: syz-executor/5917 > Modules linked in: > CPU: 1 UID: 0 PID: 5917 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 > RIP: 0010:ext4_evict_inode+0xce7/0x1020 fs/ext4/inode.c:191 > Code: f3 ff ff e8 ab 60 40 ff 49 89 dc 48 8b 5c 24 18 e9 ea f5 ff ff e8 99 60 40 ff 48 8b 5c 24 18 e9 db f5 ff ff e8 8a 60 40 ff 90 <0f> 0b 90 e9 cd f5 ff ff e8 7c 60 40 ff 48 8d 3d 85 e4 92 0d 67 48 > RSP: 0018:ffffc900057e79a0 EFLAGS: 00010293 > RAX: ffffffff82852b46 RBX: ffff88812000f5b8 RCX: ffff88811128ba00 > RDX: 0000000000000000 RSI: 0000000004000000 RDI: 0000000000000000 > RBP: ffffc900057e7ab0 R08: ffff8881111b6387 R09: 1ffff11022236c70 > R10: dffffc0000000000 R11: ffffed1022236c71 R12: 1ffff92000afcf44 > R13: dffffc0000000000 R14: 0000000004000000 R15: ffff8881111b6380 > FS: 0000555570b0d500(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007fff533fce88 CR3: 000000010b644000 CR4: 00000000000006f0 > Call Trace: > <TASK> > evict+0x61e/0xb10 fs/inode.c:846 > dispose_list fs/inode.c:888 [inline] > evict_inodes+0x75a/0x7f0 fs/inode.c:942 > generic_shutdown_super+0xaa/0x2d0 fs/super.c:632 > kill_block_super+0x44/0x90 fs/super.c:1725 > ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7459 > deactivate_locked_super+0xbc/0x130 fs/super.c:476 > cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 > task_work_run+0x1d9/0x270 kernel/task_work.c:233 > resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] > __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] > exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 > __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] > syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] > syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] > do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7fb75539d9d7 > Code: a2 c7 05 1c ed 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 > RSP: 002b:00007ffe2e6b7108 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 > RAX: 0000000000000000 RBX: 00007fb755431f90 RCX: 00007fb75539d9d7 > RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe2e6b71c0 > RBP: 00007ffe2e6b71c0 R08: 00007ffe2e6b81c0 R09: 00000000ffffffff > R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe2e6b8250 > R13: 00007fb755431f90 R14: 000000000000f951 R15: 00007ffe2e6b8290 > </TASK> > > > *** > > If these findings have caused you to resend the series or submit a > separate fix, please add the following tag to your commit message: > Tested-by: syzbot@syzkaller.appspotmail.com > > --- > This report is generated by a bot. It may contain errors. > syzbot ci engineers can be reached at syzkaller@googlegroups.com. > [ 63.910480][ T5955] EXT4-fs (loop0): mounted filesystem 00000000-0000-0006-0000-000000000000 r/w without journal. Quota mode: writeback. [ 63.915765][ T5955] ext4 filesystem being mounted at /0/file1 supports timestamps until 2038-01-19 (0x7fffffff) [ 63.921828][ T5955] EXT4-fs error (device loop0): ext4_validate_block_bitmap:441: comm syz.0.17: bg 0: block 112: padding at end of block bitmap is not set [ 63.927661][ T5955] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 16 with max blocks 16 with error 117 [ 63.932075][ T5955] EXT4-fs (loop0): This should not happen!! Data will be lost [ 63.932075][ T5955] [ 63.946677][ T197] EXT4-fs (loop0): Delayed block allocation failed for inode 15 at logical offset 32 with max blocks 36 with error 117 [ 63.960973][ T197] EXT4-fs (loop0): This should not happen!! Data will be lost In this case, WARN_ON is not suitable for the fault scenario. It is better to directly add log printing. diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 396dc3a5d16b..d4d65593bce2 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -184,6 +184,14 @@ void ext4_evict_inode(struct inode *inode) if (EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL) ext4_evict_ea_inode(inode); if (inode->i_nlink) { + /* + * If there's dirty page will lead to data loss, user + * could see stale data. + */ + if (unlikely(!ext4_emergency_state(inode->i_sb) && + mapping_tagged(&inode->i_data, PAGECACHE_TAG_DIRTY))) + ext4_warning_inode(inode, "data will be lost"); + truncate_inode_pages_final(&inode->i_data); goto no_delete; > > . > ^ permalink raw reply related [flat|nested] 4+ messages in thread
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2026-02-27 7:52 ` [syzbot ci] Re: ext4: test if inode's all dirty pages are submitted to disk syzbot ci
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2026-03-02 10:08 ` syzbot ci
2026-03-02 14:08 ` yebin (H)
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