ci2 starts bisection 2023-07-29 10:09:50.281462116 +0000 UTC m=+162250.051161409
bisecting fixing commit since 35fe0d393f80627879e12d457ca44d0112703a68
building syzkaller on f3921d4d63f97d1f1fb49a69ea85744bb7ef184b
ensuring issue is reproducible on original commit 35fe0d393f80627879e12d457ca44d0112703a68

testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 92ea0a0d944c892336dc7578fae434a4046a7d75d4c9a05f83d784f498714058
run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #2: crashed: kernel BUG in ext4_writepages
run #3: crashed: kernel BUG in ext4_writepages
run #4: crashed: KASAN: use-after-free Read in ext4_find_extent
run #5: crashed: KASAN: use-after-free Read in ext4_find_extent
run #6: crashed: KASAN: use-after-free Read in ext4_find_extent
run #7: crashed: KASAN: use-after-free Read in ext4_find_extent
run #8: crashed: KASAN: use-after-free Read in ext4_find_extent
run #9: crashed: KASAN: use-after-free Read in ext4_find_extent
run #10: crashed: KASAN: use-after-free Read in ext4_find_extent
run #11: crashed: KASAN: use-after-free Read in ext4_find_extent
run #12: crashed: KASAN: use-after-free Read in ext4_find_extent
run #13: crashed: KASAN: use-after-free Read in ext4_find_extent
run #14: crashed: KASAN: use-after-free Read in ext4_find_extent
run #15: crashed: KASAN: use-after-free Read in ext4_find_extent
run #16: crashed: KASAN: use-after-free Read in ext4_find_extent
run #17: crashed: KASAN: use-after-free Read in ext4_find_extent
run #18: crashed: KASAN: use-after-free Read in ext4_find_extent
run #19: crashed: KASAN: use-after-free Read in ext4_find_extent
run #20: crashed: kernel BUG in ext4_writepages
run #21: crashed: kernel BUG in ext4_writepages
run #22: crashed: kernel BUG in ext4_writepages
run #23: crashed: kernel BUG in ext4_writepages
run #24: crashed: KASAN: use-after-free Read in ext4_find_extent
run #25: crashed: KASAN: use-after-free Read in ext4_find_extent
run #26: crashed: KASAN: use-after-free Read in ext4_find_extent
run #27: crashed: KASAN: use-after-free Read in ext4_find_extent
run #28: crashed: KASAN: use-after-free Read in ext4_find_extent
run #29: crashed: KASAN: use-after-free Read in ext4_find_extent
run #30: crashed: KASAN: use-after-free Read in ext4_find_extent
run #31: crashed: KASAN: use-after-free Read in ext4_find_extent
run #32: crashed: KASAN: use-after-free Read in ext4_find_extent
run #33: crashed: KASAN: use-after-free Read in ext4_find_extent
run #34: crashed: KASAN: use-after-free Read in ext4_find_extent
run #35: crashed: KASAN: use-after-free Read in ext4_find_extent
run #36: crashed: KASAN: use-after-free Read in ext4_find_extent
run #37: crashed: KASAN: use-after-free Read in ext4_find_extent
run #38: crashed: KASAN: use-after-free Read in ext4_find_extent
run #39: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: slab-out-of-bounds Read in ext4_find_extent, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3080806342cb956434bc516380f3c16dfe789f7c7dbcadd60c0247b41455b61f
run #0: crashed: invalid opcode in ext4_writepages
run #1: crashed: invalid opcode in ext4_writepages
run #2: crashed: KASAN: use-after-free Read in ext4_find_extent
run #3: crashed: KASAN: use-after-free Read in ext4_find_extent
run #4: crashed: KASAN: use-after-free Read in ext4_find_extent
run #5: crashed: KASAN: use-after-free Read in ext4_find_extent
run #6: crashed: KASAN: use-after-free Read in ext4_find_extent
run #7: crashed: KASAN: use-after-free Read in ext4_find_extent
run #8: crashed: KASAN: use-after-free Read in ext4_find_extent
run #9: crashed: KASAN: use-after-free Read in ext4_find_extent
run #10: crashed: KASAN: use-after-free Read in ext4_find_extent
run #11: crashed: KASAN: use-after-free Read in ext4_find_extent
run #12: crashed: KASAN: use-after-free Read in ext4_find_extent
run #13: crashed: KASAN: use-after-free Read in ext4_find_extent
run #14: crashed: KASAN: use-after-free Read in ext4_find_extent
run #15: crashed: KASAN: use-after-free Read in ext4_find_extent
run #16: crashed: KASAN: use-after-free Read in ext4_find_extent
run #17: crashed: KASAN: use-after-free Read in ext4_find_extent
run #18: crashed: KASAN: use-after-free Read in ext4_find_extent
run #19: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
kconfig minimization: base=5179 full=6523 leaves diff=250
split chunks (needed=false): <250>
split chunk #0 of len 250 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed
testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 958e9ef9f64e40ef8af8170288ecf859d79cd41ca5a7a8a038ebec67dba9127f
run #0: crashed: invalid opcode in ext4_writepages
run #1: crashed: invalid opcode in ext4_writepages
run #2: crashed: KASAN: use-after-free Read in ext4_find_extent
run #3: crashed: KASAN: use-after-free Read in ext4_find_extent
run #4: crashed: KASAN: use-after-free Read in ext4_find_extent
run #5: crashed: KASAN: use-after-free Read in ext4_find_extent
run #6: crashed: KASAN: use-after-free Read in ext4_find_extent
run #7: crashed: KASAN: use-after-free Read in ext4_find_extent
run #8: crashed: KASAN: use-after-free Read in ext4_find_extent
run #9: crashed: KASAN: use-after-free Read in ext4_find_extent
run #10: crashed: KASAN: use-after-free Read in ext4_find_extent
run #11: crashed: KASAN: use-after-free Read in ext4_find_extent
run #12: crashed: KASAN: use-after-free Read in ext4_find_extent
run #13: crashed: KASAN: use-after-free Read in ext4_find_extent
run #14: crashed: KASAN: use-after-free Read in ext4_find_extent
run #15: crashed: KASAN: use-after-free Read in ext4_find_extent
run #16: crashed: KASAN: use-after-free Read in ext4_find_extent
run #17: crashed: KASAN: use-after-free Read in ext4_find_extent
run #18: crashed: KASAN: use-after-free Read in ext4_find_extent
run #19: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 840b6dcb955826f1c1f19915284ed4b827a03962091161f0934ea3d942261eb4
run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #2: crashed: KASAN: use-after-free Read in ext4_find_extent
run #3: crashed: KASAN: use-after-free Read in ext4_find_extent
run #4: crashed: KASAN: use-after-free Read in ext4_find_extent
run #5: crashed: KASAN: use-after-free Read in ext4_find_extent
run #6: crashed: KASAN: use-after-free Read in ext4_find_extent
run #7: crashed: KASAN: use-after-free Read in ext4_find_extent
run #8: crashed: invalid opcode in ext4_writepages
run #9: crashed: invalid opcode in ext4_writepages
run #10: crashed: KASAN: use-after-free Read in ext4_find_extent
run #11: crashed: KASAN: use-after-free Read in ext4_find_extent
run #12: crashed: invalid opcode in ext4_writepages
run #13: crashed: invalid opcode in ext4_writepages
run #14: crashed: KASAN: use-after-free Read in ext4_find_extent
run #15: crashed: KASAN: use-after-free Read in ext4_find_extent
run #16: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #17: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #18: crashed: KASAN: use-after-free Read in ext4_find_extent
run #19: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: slab-out-of-bounds Read in ext4_find_extent, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f9791022f55b9b909565f5e2fdf644112d9ff4b07c4e28d050cdca5dbfebda4d
run #0: crashed: KASAN: use-after-free Read in ext4_find_extent
run #1: crashed: KASAN: use-after-free Read in ext4_find_extent
run #2: crashed: KASAN: use-after-free Read in ext4_find_extent
run #3: crashed: KASAN: use-after-free Read in ext4_find_extent
run #4: crashed: KASAN: use-after-free Read in ext4_find_extent
run #5: crashed: KASAN: use-after-free Read in ext4_find_extent
run #6: crashed: KASAN: use-after-free Read in ext4_find_extent
run #7: crashed: KASAN: use-after-free Read in ext4_find_extent
run #8: crashed: KASAN: use-after-free Read in ext4_find_extent
run #9: crashed: KASAN: use-after-free Read in ext4_find_extent
run #10: crashed: invalid opcode in ext4_writepages
run #11: crashed: invalid opcode in ext4_writepages
run #12: crashed: KASAN: use-after-free Read in ext4_find_extent
run #13: crashed: KASAN: use-after-free Read in ext4_find_extent
run #14: crashed: invalid opcode in ext4_writepages
run #15: crashed: invalid opcode in ext4_writepages
run #16: crashed: invalid opcode in ext4_writepages
run #17: crashed: invalid opcode in ext4_writepages
run #18: crashed: KASAN: use-after-free Read in ext4_find_extent
run #19: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN UNKNOWN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 505db8116d355a9e880f6bf8eba243bad9458395ce287d760de22eb6b9badc06
run #0: crashed: KASAN: use-after-free Read in ext4_find_extent
run #1: crashed: KASAN: use-after-free Read in ext4_find_extent
run #2: crashed: KASAN: use-after-free Read in ext4_find_extent
run #3: crashed: KASAN: use-after-free Read in ext4_find_extent
run #4: crashed: invalid opcode in ext4_writepages
run #5: crashed: invalid opcode in ext4_writepages
run #6: crashed: KASAN: use-after-free Read in ext4_find_extent
run #7: crashed: KASAN: use-after-free Read in ext4_find_extent
run #8: crashed: KASAN: use-after-free Read in ext4_find_extent
run #9: crashed: KASAN: use-after-free Read in ext4_find_extent
run #10: crashed: KASAN: use-after-free Read in ext4_find_extent
run #11: crashed: KASAN: use-after-free Read in ext4_find_extent
run #12: crashed: KASAN: use-after-free Read in ext4_find_extent
run #13: crashed: KASAN: use-after-free Read in ext4_find_extent
run #14: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #15: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent
run #16: crashed: invalid opcode in ext4_writepages
run #17: crashed: invalid opcode in ext4_writepages
run #18: crashed: KASAN: use-after-free Read in ext4_find_extent
run #19: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 35fe0d393f80627879e12d457ca44d0112703a68 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
failed building 35fe0d393f80627879e12d457ca44d0112703a68: net/socket.c:1225: undefined reference to `wext_handle_ioctl'
net/socket.c:3420: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:329: undefined reference to `wext_proc_init'
net/core/net-procfs.c:345: undefined reference to `wext_proc_exit'
minimized to 50 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_MBIM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF]
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing current HEAD d3b37a712ab7a5d73a2c66156debe2e3d48df007
testing commit d3b37a712ab7a5d73a2c66156debe2e3d48df007 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8e5c09ea0821a3503e0da285fc8dbec8da5b2e1219b5934eefc54c297fa1e773
all runs: crashed: KASAN: use-after-free Read in ext4_find_extent
representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h31m2.61859731s (build: 1h7m10.186384929s, test: 20m19.227516304s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: BACKPORT: FROMGIT: irqchip/gic-v3: Workaround for GIC-700 erratum 2941627
crash: KASAN: use-after-free Read in ext4_find_extent
==================================================================
BUG: KASAN: use-after-free in ext4_ext_binsearch fs/ext4/extents.c:837 [inline]
BUG: KASAN: use-after-free in ext4_find_extent+0xb60/0xd10 fs/ext4/extents.c:953
Read of size 4 at addr ffff8881241ef4cc by task kworker/u4:3/368

CPU: 0 PID: 368 Comm: kworker/u4:3 Not tainted 6.1.25-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x105/0x148 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 ext4_ext_binsearch fs/ext4/extents.c:837 [inline]
 ext4_find_extent+0xb60/0xd10 fs/ext4/extents.c:953
 ext4_ext_map_blocks+0x25d/0x64d0 fs/ext4/extents.c:4103
 ext4_map_blocks+0x83a/0x18b0 fs/ext4/inode.c:651
 mpage_map_one_extent fs/ext4/inode.c:2421 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2474 [inline]
 ext4_writepages+0x1425/0x31d0 fs/ext4/inode.c:2842
 do_writepages+0x338/0x5b0 mm/page-writeback.c:2472
 __writeback_single_inode+0x73/0x7a0 fs/fs-writeback.c:1590
 writeback_sb_inodes+0x881/0x1500 fs/fs-writeback.c:1881
 wb_writeback+0x357/0x810 fs/fs-writeback.c:2055
 wb_do_writeback fs/fs-writeback.c:2198 [inline]
 wb_workfn+0x37d/0xdf0 fs/fs-writeback.c:2238
 process_one_work+0x6de/0xd00 kernel/workqueue.c:2296
 worker_thread+0x892/0xf20 kernel/workqueue.c:2443
 kthread+0x215/0x270 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0004907bc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x1241ef
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea0004908cc8 ffffea0004907c88 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x8140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO|0x8000000), pid 374, tgid 374 (syz-executor.0), ts 42916164401, free_ts 42966990581
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook mm/page_alloc.c:2581 [inline]
 prep_new_page+0x50b/0x530 mm/page_alloc.c:2588
 get_page_from_freelist+0x273d/0x27d0 mm/page_alloc.c:4385
 __alloc_pages+0x39f/0x780 mm/page_alloc.c:5662
 __folio_alloc+0x15/0x40 mm/page_alloc.c:5694
 __folio_alloc_node include/linux/gfp.h:245 [inline]
 folio_alloc include/linux/gfp.h:274 [inline]
 alloc_page_vma include/linux/gfp.h:283 [inline]
 do_anonymous_page mm/memory.c:4156 [inline]
 handle_pte_fault mm/memory.c:4995 [inline]
 __handle_mm_fault mm/memory.c:5139 [inline]
 handle_mm_fault+0x188f/0x2200 mm/memory.c:5268
 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
 handle_page_fault arch/x86/mm/fault.c:1507 [inline]
 exc_page_fault+0x243/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1493 [inline]
 free_pcp_prepare mm/page_alloc.c:1567 [inline]
 free_unref_page_prepare+0x794/0x7a0 mm/page_alloc.c:3484
 free_unref_page_list+0xf6/0x690 mm/page_alloc.c:3626
 release_pages+0xcfc/0xd50 mm/swap.c:1055
 free_pages_and_swap_cache+0x68/0x80 mm/swap_state.c:314
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xe9/0x1b0 mm/mmu_gather.c:261
 zap_pte_range mm/memory.c:1521 [inline]
 zap_pmd_range mm/memory.c:1570 [inline]
 zap_pud_range mm/memory.c:1599 [inline]
 zap_p4d_range mm/memory.c:1620 [inline]
 unmap_page_range+0x7d4/0x18e0 mm/memory.c:1641
 unmap_single_vma mm/memory.c:1687 [inline]
 unmap_vmas+0x461/0x590 mm/memory.c:1727
 exit_mmap+0x25c/0x730 mm/mmap.c:3307
 __mmput+0x6b/0x2a0 kernel/fork.c:1272
 mmput+0x2a/0xe0 kernel/fork.c:1295
 exit_mm kernel/exit.c:565 [inline]
 do_exit+0x93e/0x23b0 kernel/exit.c:859
 do_group_exit+0x1ba/0x290 kernel/exit.c:1022
 get_signal+0xf0b/0x1000 kernel/signal.c:2861
 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x6b/0xa0 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:204

Memory state around the buggy address:
 ffff8881241ef380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881241ef400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881241ef480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff8881241ef500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8881241ef580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 368 Comm: kworker/u4:3 Tainted: G    B              6.1.25-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2433 [inline]
RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2474 [inline]
RIP: 0010:ext4_writepages+0x31cc/0x31d0 fs/ext4/inode.c:2842
Code: 00 65 ff 0d de 09 32 7e 49 bf 00 00 00 00 00 fc ff df 4c 8b ac 24 a8 00 00 00 0f 85 6a fb ff ff e8 61 01 30 ff e9 60 fb ff ff <0f> 0b 0f 0b 55 48 89 e5 41 56 53 48 89 f3 49 89 fe 48 89 f7 be 08
RSP: 0018:ffffc90000e07060 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000e07320 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffffc90000e07450 R08: dffffc0000000000 R09: ffffed10200af470
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000042b
R13: dffffc0000000000 R14: ffff88810057a3b8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555632b818 CR3: 000000000540f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x338/0x5b0 mm/page-writeback.c:2472
 __writeback_single_inode+0x73/0x7a0 fs/fs-writeback.c:1590
 writeback_sb_inodes+0x881/0x1500 fs/fs-writeback.c:1881
 wb_writeback+0x357/0x810 fs/fs-writeback.c:2055
 wb_do_writeback fs/fs-writeback.c:2198 [inline]
 wb_workfn+0x37d/0xdf0 fs/fs-writeback.c:2238
 process_one_work+0x6de/0xd00 kernel/workqueue.c:2296
 worker_thread+0x892/0xf20 kernel/workqueue.c:2443
 kthread+0x215/0x270 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2433 [inline]
RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2474 [inline]
RIP: 0010:ext4_writepages+0x31cc/0x31d0 fs/ext4/inode.c:2842
Code: 00 65 ff 0d de 09 32 7e 49 bf 00 00 00 00 00 fc ff df 4c 8b ac 24 a8 00 00 00 0f 85 6a fb ff ff e8 61 01 30 ff e9 60 fb ff ff <0f> 0b 0f 0b 55 48 89 e5 41 56 53 48 89 f3 49 89 fe 48 89 f7 be 08
RSP: 0018:ffffc90000e07060 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000e07320 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffffc90000e07450 R08: dffffc0000000000 R09: ffffed10200af470
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000042b
R13: dffffc0000000000 R14: ffff88810057a3b8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020042000 CR3: 00000001244ba000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400