ci2 starts bisection 2026-08-05 23:17:35.600359475 +0000 UTC m=+16227.409617279 bisecting fixing commit since cc0ae2abdc73d5432c9a86d8576c344c68a1e29c building syzkaller on dcaebc52ee9a07f19b1af93180bb01c9c454c55c ensuring issue is reproducible on original commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 2c97bacd55dc53062b53ed7e12cc3377ea07344735cec6869280b66d5d395630 run #0: crashed: KASAN: slab-out-of-bounds 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_ext_try_to_merge_right 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_ext_try_to_merge_right run #8: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right 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: 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-USE-AFTER-FREE-READ] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 0fc754d7422378555a909a28c013fba0afb4556039ab69b1902985c75786749a run #0: crashed: KASAN: use-after-free Read in ext4_find_extent run #1: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #2: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right 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_ext_try_to_merge_right run #7: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #8: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #9: crashed: KASAN: use-after-free Read in ext4_find_extent representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ] the bug reproduces without the instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed kconfig minimization: base=4788 full=6024 leaves diff=248 split chunks (needed=false): <248> split chunk #0 of len 248 into 5 parts testing without sub-chunk 1/5 disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 08b90c95f50c607a312e1d965c8b15429479fbd69a6a3fee05e950410a8ce55e run #0: crashed: KASAN: slab-out-of-bounds 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: slab-out-of-bounds 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_ext_try_to_merge_right run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_ext_try_to_merge_right representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ KASAN-READ] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ubsan bug_or_warning locking atomic_sleep hang memleak], they are not needed testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 972ee7ede6693c04f25bdcced6eaae3fd3a9e477f9c1f14942e2bc5199df9135 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: slab-out-of-bounds 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 representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 42f0d95a8ad752c6794f5681c06b3675897fd5dc656f59a73c8ea7d1d085fce5 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: slab-out-of-bounds Read in ext4_find_extent run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent run #7: crashed: KASAN: out-of-bounds Read in ext4_find_extent run #8: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #9: crashed: KASAN: use-after-free Read in ext4_find_extent representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ KASAN-READ] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ubsan bug_or_warning locking atomic_sleep hang memleak], they are not needed testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 303c5a06c460d758bd2173be948a2c4a08f3d6d91f38d08af7046e7fff07ca13 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_ext_try_to_merge_right 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: slab-out-of-bounds 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 representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing commit cc0ae2abdc73d5432c9a86d8576c344c68a1e29c gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 failed building cc0ae2abdc73d5432c9a86d8576c344c68a1e29c: net/socket.c:1128:(.text+0x1307): undefined reference to `wext_handle_ioctl' net/socket.c:3397:(.text+0x17c7): undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346:(.text+0x33b): undefined reference to `wext_proc_exit' net/core/net-procfs.c:330:(.text+0x4e2): undefined reference to `wext_proc_init' minimized to 48 configs; suspects: [HID_ZEROPLUS 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 USB_SERIAL_FTDI_SIO 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 USB_XHCI_PCI_RENESAS WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS ZEROPLUS_FF] disabling configs for [bug_or_warning locking atomic_sleep hang memleak ubsan], they are not needed testing current HEAD 0f73d4924a745338c12b47512b95c879c89e5119 testing commit 0f73d4924a745338c12b47512b95c879c89e5119 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 4b177747d1cfc6d41054a28839b767c9aa02ea7b33c5bb01c8248de868e1d230 all runs: OK false negative chance: 0.000 # git bisect start 0f73d4924a745338c12b47512b95c879c89e5119 cc0ae2abdc73d5432c9a86d8576c344c68a1e29c Bisecting: 823 revisions left to test after this (roughly 10 steps) [8cb04a830e96345cbaa3880e24eb9a91ac62461f] ALSA: compress: Drop unused functions determine whether the revision contains the guilty commit checking the merge base aed5c3b77cd53ba74f66767b03bfb9177662af4b no existing result, test the revision testing commit aed5c3b77cd53ba74f66767b03bfb9177662af4b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: e1afa4ac2e16bd85d3c9c733dc43d63d3be724e2472b290cb6eedf8ee7dafc03 run #0: crashed: KASAN: slab-out-of-bounds 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_ext_try_to_merge_right run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent run #9: crashed: KASAN: use-after-free Read in ext4_find_extent representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ] testing commit 8cb04a830e96345cbaa3880e24eb9a91ac62461f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 0ac6dc56dbbf42a244c34e9ddd53a4483f7783ba49853f7ade4b8431e7e8b511 all runs: OK false negative chance: 0.000 # git bisect bad 8cb04a830e96345cbaa3880e24eb9a91ac62461f Bisecting: 411 revisions left to test after this (roughly 9 steps) [44b18bac2b3063784ebb871a922803b11d9c339d] mm/hugetlb: fix two comments related to huge_pmd_unshare() determine whether the revision contains the guilty commit revision aed5c3b77cd53ba74f66767b03bfb9177662af4b crashed and is reachable testing commit 44b18bac2b3063784ebb871a922803b11d9c339d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: f5cff28e8de3cfdc10d728a73d2f9a5e7c3f037d2bf5ce484f5f86c25b776cbe all runs: OK false negative chance: 0.000 # git bisect bad 44b18bac2b3063784ebb871a922803b11d9c339d Bisecting: 205 revisions left to test after this (roughly 8 steps) [2121f5fbe88daff0f1fc5bc47d359426c74b86b0] netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() determine whether the revision contains the guilty commit revision aed5c3b77cd53ba74f66767b03bfb9177662af4b crashed and is reachable testing commit 2121f5fbe88daff0f1fc5bc47d359426c74b86b0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: ea449be5a0dd885f8446329d60794ff75c37489773378a8f59ecd49622855f4d 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_ext_try_to_merge_right run #3: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #4: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #5: crashed: KASAN: slab-out-of-bounds 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: slab-out-of-bounds Read in ext4_ext_try_to_merge_right run #9: crashed: KASAN: use-after-free Read in ext4_find_extent representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ] # git bisect good 2121f5fbe88daff0f1fc5bc47d359426c74b86b0 Bisecting: 102 revisions left to test after this (roughly 7 steps) [bb4b4719a2df02bf1bc8c9bc1b7984d264b31ba2] objtool: Fix Clang jump table detection determine whether the revision contains the guilty commit revision 2121f5fbe88daff0f1fc5bc47d359426c74b86b0 crashed and is reachable testing commit bb4b4719a2df02bf1bc8c9bc1b7984d264b31ba2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 7fb4a091f29ef95fc68e7524dc071e44e58225dc503c180197efde6b9e50c332 all runs: OK false negative chance: 0.000 # git bisect bad bb4b4719a2df02bf1bc8c9bc1b7984d264b31ba2 Bisecting: 51 revisions left to test after this (roughly 6 steps) [622439ee7d26cf2202f304ecbbf35bf348f09c23] dma-mapping: add missing `inline` for `dma_free_attrs` determine whether the revision contains the guilty commit revision aed5c3b77cd53ba74f66767b03bfb9177662af4b crashed and is reachable testing commit 622439ee7d26cf2202f304ecbbf35bf348f09c23 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 10f59912a201d765ce54c28e55852cf04605f976d79c9a752c37cc496342129f run #0: crashed: KASAN: use-after-free Read in ext4_find_extent run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_find_extent run #3: crashed: KASAN: use-after-free Read in ext4_find_extent run #4: crashed: KASAN: slab-out-of-bounds 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_ext_try_to_merge_right run #7: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #8: crashed: KASAN: use-after-free Read in ext4_find_extent run #9: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ KASAN-READ] # git bisect good 622439ee7d26cf2202f304ecbbf35bf348f09c23 Bisecting: 25 revisions left to test after this (roughly 5 steps) [1682c442af79e4d2e70fcb8a6de2bb1b2be17d03] sysctl: fix uninitialized variable in proc_do_large_bitmap determine whether the revision contains the guilty commit revision 622439ee7d26cf2202f304ecbbf35bf348f09c23 crashed and is reachable testing commit 1682c442af79e4d2e70fcb8a6de2bb1b2be17d03 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 1104a5dd6a0fdfd17d0408e36c5f951d8b0b5710cfd3ebdebe99dce47bdd68f0 run #0: crashed: KASAN: slab-out-of-bounds 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: out-of-bounds Read in ext4_find_extent run #4: crashed: KASAN: slab-out-of-bounds 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: slab-out-of-bounds Read in ext4_find_extent run #8: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #9: crashed: KASAN: use-after-free Read in ext4_find_extent representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ KASAN-READ] # git bisect good 1682c442af79e4d2e70fcb8a6de2bb1b2be17d03 Bisecting: 12 revisions left to test after this (roughly 4 steps) [fea6b2e250ff48f10d166011b57a8516ae5438c9] ext4: avoid allocate block from corrupted group in ext4_mb_find_by_goal() determine whether the revision contains the guilty commit revision 622439ee7d26cf2202f304ecbbf35bf348f09c23 crashed and is reachable testing commit fea6b2e250ff48f10d166011b57a8516ae5438c9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 45f057de7a0ca7dd097ab6555b99baa5ea3b702fa11051920d2c3e549d1efafd run #0: crashed: KASAN: use-after-free Read in ext4_find_extent run #1: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #2: crashed: KASAN: slab-out-of-bounds 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_ext_try_to_merge_right run #7: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right run #8: crashed: KASAN: use-after-free Read in ext4_find_extent run #9: crashed: KASAN: use-after-free Read in ext4_ext_try_to_merge_right representative crash: KASAN: use-after-free Read in ext4_find_extent, types: [KASAN-USE-AFTER-FREE-READ] # git bisect good fea6b2e250ff48f10d166011b57a8516ae5438c9 Bisecting: 6 revisions left to test after this (roughly 3 steps) [8789f48cdebd70d9e5742a6f6e8614cc07f0cae9] btrfs: fix super block offset in error message in btrfs_validate_super() determine whether the revision contains the guilty commit revision fea6b2e250ff48f10d166011b57a8516ae5438c9 crashed and is reachable testing commit 8789f48cdebd70d9e5742a6f6e8614cc07f0cae9 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 71597ee515fb1f600ccd87298c5761f2534aebc4a656380ae6d01417e815a193 all runs: OK false negative chance: 0.000 # git bisect bad 8789f48cdebd70d9e5742a6f6e8614cc07f0cae9 Bisecting: 2 revisions left to test after this (roughly 2 steps) [22d59633c90b8d1e22a36b15bfc03f792a6141ee] dmaengine: xilinx: xilinx_dma: Fix dma_device directions determine whether the revision contains the guilty commit revision 1682c442af79e4d2e70fcb8a6de2bb1b2be17d03 crashed and is reachable testing commit 22d59633c90b8d1e22a36b15bfc03f792a6141ee gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 0e13472f8fdcfa57ff479d847a71fa65d0fc4e0ee4e494c15aeb36a355b53006 all runs: OK false negative chance: 0.000 # git bisect bad 22d59633c90b8d1e22a36b15bfc03f792a6141ee Bisecting: 0 revisions left to test after this (roughly 1 step) [b4e0ef9f5d116760e6f13d03d47c8fced244508a] phy: ti: j721e-wiz: Fix device node reference leak in wiz_get_lane_phy_types() determine whether the revision contains the guilty commit revision aed5c3b77cd53ba74f66767b03bfb9177662af4b crashed and is reachable testing commit b4e0ef9f5d116760e6f13d03d47c8fced244508a gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 3afb0e09ff2fb849f7680cd79ff11c7873594ba4f468cc2afded1f05f6e5c996 all runs: OK false negative chance: 0.000 # git bisect bad b4e0ef9f5d116760e6f13d03d47c8fced244508a Bisecting: 0 revisions left to test after this (roughly 0 steps) [5ad6d994255e27a3254079dfb50ca861fc31f2d0] ext4: reject mount if bigalloc with s_first_data_block != 0 determine whether the revision contains the guilty commit revision 1682c442af79e4d2e70fcb8a6de2bb1b2be17d03 crashed and is reachable testing commit 5ad6d994255e27a3254079dfb50ca861fc31f2d0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: d06185c4bf65f33842e6607f4a8e2f0a8674553355e596a4c726023f9d297563 all runs: OK false negative chance: 0.000 # git bisect bad 5ad6d994255e27a3254079dfb50ca861fc31f2d0 5ad6d994255e27a3254079dfb50ca861fc31f2d0 is the first bad commit commit 5ad6d994255e27a3254079dfb50ca861fc31f2d0 Author: Helen Koike Date: Tue Mar 17 11:23:10 2026 -0300 ext4: reject mount if bigalloc with s_first_data_block != 0 commit 3822743dc20386d9897e999dbb990befa3a5b3f8 upstream. bigalloc with s_first_data_block != 0 is not supported, reject mounting it. Signed-off-by: Helen Koike Suggested-by: Theodore Ts'o Reported-by: syzbot+b73703b873a33d8eb8f6@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b73703b873a33d8eb8f6 Link: https://patch.msgid.link/20260317142325.135074-1-koike@igalia.com Signed-off-by: Theodore Ts'o Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman fs/ext4/super.c | 7 +++++++ 1 file changed, 7 insertions(+) accumulated error probability: 0.00 culprit signature: d06185c4bf65f33842e6607f4a8e2f0a8674553355e596a4c726023f9d297563 parent signature: 45f057de7a0ca7dd097ab6555b99baa5ea3b702fa11051920d2c3e549d1efafd revisions tested: 19, total time: 6h7m39.147810941s (build: 2h5m24.892562908s, test: 3h31m50.506251364s) first good commit: 5ad6d994255e27a3254079dfb50ca861fc31f2d0 ext4: reject mount if bigalloc with s_first_data_block != 0 recipients (to): ["gregkh@linuxfoundation.org" "koike@igalia.com" "tytso@mit.edu"] recipients (cc): []