bisecting cause commit starting from 7b4cb0a48db03a67d1ce21c4f97b1508a241a2e7
building syzkaller on 30927cd7ca754b33e515799d282f9af3e979cf94
testing commit 7b4cb0a48db03a67d1ce21c4f97b1508a241a2e7 with gcc (GCC) 8.1.0
kernel signature: e507918ca8fccc2183ada21f10f9e12175afce364fbab438ba94a5ddee1b446b
all runs: crashed: PANIC: double fault in fixup_bad_iret
testing release v5.6
testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.1.0
kernel signature: 6fca4d2df6ab5810319b7c2d420adefc3cb5136ce121e2f565328b3d68d52630
all runs: OK
# git bisect start 7b4cb0a48db03a67d1ce21c4f97b1508a241a2e7 7111951b8d4973bda27ff663f2cf18b663d15b48
Bisecting: 13711 revisions left to test after this (roughly 14 steps)
[2afccbd283ae63072391ea17ac1d772ed9d33749] spi: dw: Discard static DW DMA slave structures
testing commit 2afccbd283ae63072391ea17ac1d772ed9d33749 with gcc (GCC) 8.1.0
kernel signature: dca1456699d5d77c5126ff8bbb88f0d8c57833a12e6dcf021814f4f5e26bcf04
all runs: OK
# git bisect good 2afccbd283ae63072391ea17ac1d772ed9d33749
Bisecting: 6907 revisions left to test after this (roughly 13 steps)
[9b803da87bc233429a737826bc04552c08e57f08] Merge remote-tracking branch 'mlx5-next/mlx5-next'
testing commit 9b803da87bc233429a737826bc04552c08e57f08 with gcc (GCC) 8.1.0
kernel signature: a878a53e19ed268727411a0122da4e397e8a83b0364ad7c0dfceace4c9e2ccdf
all runs: OK
# git bisect good 9b803da87bc233429a737826bc04552c08e57f08
Bisecting: 3656 revisions left to test after this (roughly 12 steps)
[36a9db59122ad32b4742980571a98f4c2a2442a7] Merge remote-tracking branch 'spi/for-next'
testing commit 36a9db59122ad32b4742980571a98f4c2a2442a7 with gcc (GCC) 8.1.0
kernel signature: 1304a1e101105f39b4a46e6b4accc74ba17628d3fa03dbc120834600f99fd878
all runs: OK
# git bisect good 36a9db59122ad32b4742980571a98f4c2a2442a7
Bisecting: 1980 revisions left to test after this (roughly 11 steps)
[abce0f509d44116def76601e12b67b0c69a8b049] Merge remote-tracking branch 'thunderbolt/next'
testing commit abce0f509d44116def76601e12b67b0c69a8b049 with gcc (GCC) 8.1.0
kernel signature: 119e5a9bb46a90ab68eb3aa928da84149309d9461fee0d3a66bb2a0573424515
all runs: crashed: PANIC: double fault in fixup_bad_iret
# git bisect bad abce0f509d44116def76601e12b67b0c69a8b049
Bisecting: 815 revisions left to test after this (roughly 10 steps)
[4122d5ea547616cc2e1674db53499ef8f0ebd504] Merge remote-tracking branch 'rcu/rcu/next'
testing commit 4122d5ea547616cc2e1674db53499ef8f0ebd504 with gcc (GCC) 8.1.0
kernel signature: 644df871760e8067a57daf6045cc87c455446a3c66c7d8c58036fc47fdd78727
all runs: crashed: PANIC: double fault in fixup_bad_iret
# git bisect bad 4122d5ea547616cc2e1674db53499ef8f0ebd504
Bisecting: 430 revisions left to test after this (roughly 9 steps)
[c4a7fb6ee52ac2a3b4cd2d993c297575ca9065b4] Merge branch 'x86/cleanups'
testing commit c4a7fb6ee52ac2a3b4cd2d993c297575ca9065b4 with gcc (GCC) 8.1.0
kernel signature: 288059efc931b3f5ee46d393fbe4a4b789d49fcdabc59b3f01823183c415064c
all runs: crashed: PANIC: double fault in fixup_bad_iret
# git bisect bad c4a7fb6ee52ac2a3b4cd2d993c297575ca9065b4
Bisecting: 247 revisions left to test after this (roughly 8 steps)
[203ef20fd185bd065395aa42c0209a60c4085466] Merge branch 'core/kprobes' into x86/entry
testing commit 203ef20fd185bd065395aa42c0209a60c4085466 with gcc (GCC) 8.1.0
kernel signature: 3470e6b69b3d02374bb3ba1807bed2fcc5b70cb72474c58fad9e251f9dc8f278
all runs: OK
# git bisect good 203ef20fd185bd065395aa42c0209a60c4085466
Bisecting: 123 revisions left to test after this (roughly 7 steps)
[e98b41399cb15d8e52e266b53e32f1362f541daf] x86/entry: Convert Bounds exception to IDTENTRY
testing commit e98b41399cb15d8e52e266b53e32f1362f541daf with gcc (GCC) 8.1.0
kernel signature: 96dd8107180512955ab20347140e0d97f8c23dbb13566a66741087e4d2276b1a
all runs: crashed: PANIC: double fault in fixup_bad_iret
# git bisect bad e98b41399cb15d8e52e266b53e32f1362f541daf
Bisecting: 61 revisions left to test after this (roughly 6 steps)
[9967683ce5d4ce21829bbc807e006ee33cc68725] objtool, kcsan: Add explicit check functions to uaccess whitelist
testing commit 9967683ce5d4ce21829bbc807e006ee33cc68725 with gcc (GCC) 8.1.0
kernel signature: c569bc7922ed6d22cded22a08fdf5afefc595e36a7c90f2c7b6915dfde8d2103
all runs: OK
# git bisect good 9967683ce5d4ce21829bbc807e006ee33cc68725
Bisecting: 30 revisions left to test after this (roughly 5 steps)
[6bcc8f459fe790f35dfd8e3bb0f43e530d44ee9a] locking/atomics: Flip fallbacks and instrumentation
testing commit 6bcc8f459fe790f35dfd8e3bb0f43e530d44ee9a with gcc (GCC) 8.1.0
kernel signature: cd03c2aa839610db08adb880b13e58aa82a6e91b164f8e4383b2b79d585a2ede
all runs: OK
# git bisect good 6bcc8f459fe790f35dfd8e3bb0f43e530d44ee9a
Bisecting: 15 revisions left to test after this (roughly 4 steps)
[b5f7e5db3839c5e67af6544872f35e2d70359518] x86/entry: Make entry_64_compat.S objtool clean
testing commit b5f7e5db3839c5e67af6544872f35e2d70359518 with gcc (GCC) 8.1.0
revisions tested: 13, total time: 3h23m31.496921274s (build: 1h47m12.606900146s, test: 1h34m14.654154032s)
error: gcc: fatal error: Killed signal terminated program cc1